Kishen, A.; Murukeshan, V. M.; Krishnakumar, V.; Lim, C. S.; Asundi, A.
Digital speckle pattern interferometric (DSPI) and thermo-graphic investigations on the thermal responds in human teeth Journal Article
In: Optics and Lasers in Engineering, vol. 39, no. 4, pp. 489 – 500, 2003, ISSN: 01438166, (Cited by: 8).
@article{Kishen2003489,
title = {Digital speckle pattern interferometric (DSPI) and thermo-graphic investigations on the thermal responds in human teeth},
author = {A. Kishen and V. M. Murukeshan and V. Krishnakumar and C. S. Lim and A. Asundi},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0037375470&doi=10.1016%2fS0143-8166%2802%2900031-3&partnerID=40&md5=4fab0468aff99e9aa78c41a16585718a},
doi = {10.1016/S0143-8166(02)00031-3},
issn = {01438166},
year = {2003},
date = {2003-01-01},
journal = {Optics and Lasers in Engineering},
volume = {39},
number = {4},
pages = {489 – 500},
abstract = {Human dentine is a composite material made up of constituents of varying thermal properties, which when subjected to changes in temperature experiences complex thermal effects. In this study, the response of functionally adapted dentine to temperature changes in physiological range is analyzed using a digital speckle pattern interferometer (DSPI) and thermography in conjunction with an advanced digital fringe processing technique. The advanced digital fringe processing is conducted using an asymmetric and central peak Gaussian filter, in order to remove noise and, subsequently, enhance the quality of the images. This investigation demonstrates the responds of functionally adapted dentine to temperature changes in its own plane and out of plane. Distinct pattern of out-of-plane and in-plane displacement was observed on the dentine by the DSPI analysis. The thermo-graphic analysis was used to rationalize the above nature of deformation in the dentine. These analyses showed that the inner, cervical dentine exhibited conspicuous deformation at the maximum temperature rise and equilibrated last during temperature drop. © 2002 Elsevier Science Ltd. All rights reserved.},
note = {Cited by: 8},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Human dentine is a composite material made up of constituents of varying thermal properties, which when subjected to changes in temperature experiences complex thermal effects. In this study, the response of functionally adapted dentine to temperature changes in physiological range is analyzed using a digital speckle pattern interferometer (DSPI) and thermography in conjunction with an advanced digital fringe processing technique. The advanced digital fringe processing is conducted using an asymmetric and central peak Gaussian filter, in order to remove noise and, subsequently, enhance the quality of the images. This investigation demonstrates the responds of functionally adapted dentine to temperature changes in its own plane and out of plane. Distinct pattern of out-of-plane and in-plane displacement was observed on the dentine by the DSPI analysis. The thermo-graphic analysis was used to rationalize the above nature of deformation in the dentine. These analyses showed that the inner, cervical dentine exhibited conspicuous deformation at the maximum temperature rise and equilibrated last during temperature drop. © 2002 Elsevier Science Ltd. All rights reserved.
Griggs, Jason A.; Wataha, John C.; Kishen, Anil
Effect of hydrolyzed surface layer on the cytotoxicity and chemical resistance of a low fusing porcelain Journal Article
In: Dental Materials, vol. 19, no. 5, pp. 353 – 358, 2003, ISSN: 01095641, (Cited by: 9).
@article{Griggs2003353,
title = {Effect of hydrolyzed surface layer on the cytotoxicity and chemical resistance of a low fusing porcelain},
author = {Jason A. Griggs and John C. Wataha and Anil Kishen},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0041992427&doi=10.1016%2fS0109-5641%2802%2900066-0&partnerID=40&md5=19e799eb5077070ef2f196af0a59fb9e},
doi = {10.1016/S0109-5641(02)00066-0},
issn = {01095641},
year = {2003},
date = {2003-01-01},
journal = {Dental Materials},
volume = {19},
number = {5},
pages = {353 – 358},
abstract = {Objectives. The objectives of this study were to verify the formation of a hydrolyzed surface layer on Duceram LFC and to determine its effect on the cytotoxicity of the porcelain as measured by cellular activity and concentrations of leached ionic species. Methods. Specimens were fabricated from dentin porcelain by a vibration blotting technique. Half of the specimens underwent accelerated aging by subjecting them to the standard test for hydrolytic resistance (ISO 6872). Fibroblast cell cultures were placed in direct contact with specimens. Cell viability was assessed using succinic dehydrogenase activity. Chemical resistance was determined by leaching specimens with a continuous flow of deionized water and measuring the concentrations of soluble ions in the leachates. Porcelain surface topography was examined using atomic force microscopy, and Fourier transform infrared spectroscopy was used to detect the composition of the surface layer. Results. Hydrolyzation treatment created a smooth texture on the porcelain surfaces but did not result in a hydrolyzed surface layer with increased hydroxyl content. There was a decreased alkali ion content in the surface layer of hydrolyzed specimens. Mean cellular SDH activities for non-hydrolyzed and hydrolyzed porcelain were 75 ± 7 and 80 ± 5% of Teflon® controls, respectively. Only sodium ions were present in significant concentrations in collected leachates. The sodium concentration decreased over the initial 4.5 h of leaching. Significance. The changes in surface layer texture and composition as the result of the aging treatment had little effect on the cytotoxicity and chemical resistance of Duceram LFC. The results suggest that Duceram LFC would pose no biocompatibility risk even after extended exposure to the oral environment. These data also provide baseline material properties to be used in future studies of the effects of porcelain additives. © 2003 Academy of Dental Materials. Published by Elsevier Science Ltd. All rights reserved.},
note = {Cited by: 9},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Objectives. The objectives of this study were to verify the formation of a hydrolyzed surface layer on Duceram LFC and to determine its effect on the cytotoxicity of the porcelain as measured by cellular activity and concentrations of leached ionic species. Methods. Specimens were fabricated from dentin porcelain by a vibration blotting technique. Half of the specimens underwent accelerated aging by subjecting them to the standard test for hydrolytic resistance (ISO 6872). Fibroblast cell cultures were placed in direct contact with specimens. Cell viability was assessed using succinic dehydrogenase activity. Chemical resistance was determined by leaching specimens with a continuous flow of deionized water and measuring the concentrations of soluble ions in the leachates. Porcelain surface topography was examined using atomic force microscopy, and Fourier transform infrared spectroscopy was used to detect the composition of the surface layer. Results. Hydrolyzation treatment created a smooth texture on the porcelain surfaces but did not result in a hydrolyzed surface layer with increased hydroxyl content. There was a decreased alkali ion content in the surface layer of hydrolyzed specimens. Mean cellular SDH activities for non-hydrolyzed and hydrolyzed porcelain were 75 ± 7 and 80 ± 5% of Teflon® controls, respectively. Only sodium ions were present in significant concentrations in collected leachates. The sodium concentration decreased over the initial 4.5 h of leaching. Significance. The changes in surface layer texture and composition as the result of the aging treatment had little effect on the cytotoxicity and chemical resistance of Duceram LFC. The results suggest that Duceram LFC would pose no biocompatibility risk even after extended exposure to the oral environment. These data also provide baseline material properties to be used in future studies of the effects of porcelain additives. © 2003 Academy of Dental Materials. Published by Elsevier Science Ltd. All rights reserved.
Kishen, A.; John, M. S.; Lim, C. S.; Asundi, A.
A fiber optic biosensor (FOBS) to monitor mutans streptococci in human saliva Journal Article
In: Biosensors and Bioelectronics, vol. 18, no. 11, pp. 1371 – 1378, 2003, ISSN: 09565663, (Cited by: 44).
@article{Kishen20031371,
title = {A fiber optic biosensor (FOBS) to monitor mutans streptococci in human saliva},
author = {A. Kishen and M. S. John and C. S. Lim and A. Asundi},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0041704872&doi=10.1016%2fS0956-5663%2803%2900081-2&partnerID=40&md5=4c0c1e81aef92880f0590a3274103c25},
doi = {10.1016/S0956-5663(03)00081-2},
issn = {09565663},
year = {2003},
date = {2003-01-01},
journal = {Biosensors and Bioelectronics},
volume = {18},
number = {11},
pages = {1371 – 1378},
publisher = {Elsevier Ltd},
abstract = {A fiber optic biosensor (FOBS) to monitor mutans streptococci activity in human saliva is developed. The biosensor utilizes e fiber optic evanescent wave spectroscopy to monitor a bacterial mediated biochemical reaction. To achieve this, a short length of the cladding is removed; the fiber core surface is treated and coated with a thin film of porous glass medium using sol-gel technique. The mutans streptococci mediated reaction with sucrose is monitored using a photosensitive indicator, which is immobilized within the porous glass coating. Spectroscopic analysis shows that the transmitted intensity at 597 nm increases conspicuously when monitored for 120 min. Two distinct phases are observed, one from 0 to 60 min and the other from 60 to 120 min. A negative correlation coefficient between the rate of increase in absorption peak intensity recorded by the FOBS and the decrease in pH measured using the pH meter, was calculated to be ρ=-0.994. This investigation highlights the potential benefits of this sensor to monitor mutans streptococci activity in saliva. © 2003 Elsevier Science B.V. All rights reserved.},
note = {Cited by: 44},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
A fiber optic biosensor (FOBS) to monitor mutans streptococci activity in human saliva is developed. The biosensor utilizes e fiber optic evanescent wave spectroscopy to monitor a bacterial mediated biochemical reaction. To achieve this, a short length of the cladding is removed; the fiber core surface is treated and coated with a thin film of porous glass medium using sol-gel technique. The mutans streptococci mediated reaction with sucrose is monitored using a photosensitive indicator, which is immobilized within the porous glass coating. Spectroscopic analysis shows that the transmitted intensity at 597 nm increases conspicuously when monitored for 120 min. Two distinct phases are observed, one from 0 to 60 min and the other from 60 to 120 min. A negative correlation coefficient between the rate of increase in absorption peak intensity recorded by the FOBS and the decrease in pH measured using the pH meter, was calculated to be ρ=-0.994. This investigation highlights the potential benefits of this sensor to monitor mutans streptococci activity in saliva. © 2003 Elsevier Science B.V. All rights reserved.
Preejith, P. V.; Lim, C. S.; Kishen, A.; John, M. S.; Asundi, A.
Total protein measurement using a fiber-optic evanescent wave-based biosensor Journal Article
In: Biotechnology Letters, vol. 25, no. 2, pp. 105 – 110, 2003, ISSN: 01415492, (Cited by: 40).
@article{Preejith2003105,
title = {Total protein measurement using a fiber-optic evanescent wave-based biosensor},
author = {P. V. Preejith and C. S. Lim and A. Kishen and M. S. John and A. Asundi},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0347298555&doi=10.1023%2fA%3a1021955032291&partnerID=40&md5=e67a474f427f0fe83ff14494366ac722},
doi = {10.1023/A:1021955032291},
issn = {01415492},
year = {2003},
date = {2003-01-01},
journal = {Biotechnology Letters},
volume = {25},
number = {2},
pages = {105 – 110},
abstract = {A novel method and instrumental system to determine the total protein concentration in a liquid sample is described. It uses a fiber optic total protein sensor (FOPS) based on the principles of fiber optic evanescent wave spectroscopy. The FOPS applies a dye-immobilized porous glass coating on a multi-mode optical fiber. The evanescent waves at the fiber optic core-cladding interface are used to monitor the protein-induced changes in the sensor element. The FOPS offers a single-step method for quantifying protein concentrations without destroying the sample. The response time and reusability of the FOPS are evaluated. This unique sensing method presents a sensitive and accurate platform for the quantification of protein.},
note = {Cited by: 40},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
A novel method and instrumental system to determine the total protein concentration in a liquid sample is described. It uses a fiber optic total protein sensor (FOPS) based on the principles of fiber optic evanescent wave spectroscopy. The FOPS applies a dye-immobilized porous glass coating on a multi-mode optical fiber. The evanescent waves at the fiber optic core-cladding interface are used to monitor the protein-induced changes in the sensor element. The FOPS offers a single-step method for quantifying protein concentrations without destroying the sample. The response time and reusability of the FOPS are evaluated. This unique sensing method presents a sensitive and accurate platform for the quantification of protein.
Kishen, Anil; John, M. S.; Lim, C. S.; Asundi, Anand
A fiber optic based biosensor to monitor mutans streptococci in saliva Conference
vol. 5068, 2002, ISSN: 0277786X, (Cited by: 2; Conference name: Saratov Fall Meeting 2002 Optical Technologies in Biophysics and Medicine IV; Conference date: 1 October 2002 through 4 October 2002; Conference code: 62295).
@conference{Kishen2002194,
title = {A fiber optic based biosensor to monitor mutans streptococci in saliva},
author = {Anil Kishen and M. S. John and C. S. Lim and Anand Asundi},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-1342310665&partnerID=40&md5=1d5c5557d104dc6cffc2c7aab55daa44},
issn = {0277786X},
year = {2002},
date = {2002-01-01},
journal = {Proceedings of SPIE - The International Society for Optical Engineering},
volume = {5068},
pages = {194 – 201},
abstract = {A fiber optic biosensor to monitor mutatis streptococci activity in human saliva is discussed. The developed biosensor is based on the selective bacterial growth medium and evanescent wave spectroscopy at the core-cladding interface of a multimode fiber to monitor the bacterial mediated biochemical reaction. In order to achieve this, a short length of the cladding is removed; the fiber core surface is treated and coated with a thin film of porous glass medium using sol-gel technique. During experiments, the mutans streptococci mediated reaction with sucrose is monitored using a photosensitive indicator, which is immobilized within the porous glass coating. This investigation highlights the potential benefits of the FOBS to monitor mutans streptococci activity in saliva.},
note = {Cited by: 2; Conference name: Saratov Fall Meeting 2002 Optical Technologies in Biophysics and Medicine IV; Conference date: 1 October 2002 through 4 October 2002; Conference code: 62295},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
A fiber optic biosensor to monitor mutatis streptococci activity in human saliva is discussed. The developed biosensor is based on the selective bacterial growth medium and evanescent wave spectroscopy at the core-cladding interface of a multimode fiber to monitor the bacterial mediated biochemical reaction. In order to achieve this, a short length of the cladding is removed; the fiber core surface is treated and coated with a thin film of porous glass medium using sol-gel technique. During experiments, the mutans streptococci mediated reaction with sucrose is monitored using a photosensitive indicator, which is immobilized within the porous glass coating. This investigation highlights the potential benefits of the FOBS to monitor mutans streptococci activity in saliva.
Kishen, Anil; Asundi, Anand
Approaching biomimetics in dental restorations via photonics Journal Article
In: Journal of X-Ray Science and Technology, vol. 10, no. 3-4, pp. 153 – 166, 2002, ISSN: 08953996, (Cited by: 1).
@article{Kishen2002153,
title = {Approaching biomimetics in dental restorations via photonics},
author = {Anil Kishen and Anand Asundi},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0036447616&partnerID=40&md5=5a196ce0482f1c4990cd0654f28ebf71},
issn = {08953996},
year = {2002},
date = {2002-01-01},
journal = {Journal of X-Ray Science and Technology},
volume = {10},
number = {3-4},
pages = {153 – 166},
abstract = {It is established that a natural system balances functional requirements with the anatomical optimizations it has achieved. Though such process of functional adaptation is recognized in bone tissue, any mode of functional adaptation in dental tissue is yet to be understood. In this study a three-dimensional digital photoelasticity is conducted to evaluate the nature of stress distribution in the sagittal aspect and the cross-sections of the dentine structure. Later, a fluoroscopic X-ray microscopic analysis and a microindentation experiments, are performed on different sections obtained from the sagittal and cross-sections of the dentine. These experiments aided in correlating the multi-plane pattern of mineralization and the spatial gradients in elastic modulus in the original dentine structure with the three-dimensional stress distribution in photoelastic models. This study highlights dentine structure as a biologically graded structure to functional loads.},
note = {Cited by: 1},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
It is established that a natural system balances functional requirements with the anatomical optimizations it has achieved. Though such process of functional adaptation is recognized in bone tissue, any mode of functional adaptation in dental tissue is yet to be understood. In this study a three-dimensional digital photoelasticity is conducted to evaluate the nature of stress distribution in the sagittal aspect and the cross-sections of the dentine structure. Later, a fluoroscopic X-ray microscopic analysis and a microindentation experiments, are performed on different sections obtained from the sagittal and cross-sections of the dentine. These experiments aided in correlating the multi-plane pattern of mineralization and the spatial gradients in elastic modulus in the original dentine structure with the three-dimensional stress distribution in photoelastic models. This study highlights dentine structure as a biologically graded structure to functional loads.
Kishen, Anil; Asundi, A.
Photomechanical investigations on post endodontically rehabilitated teeth Journal Article
In: Journal of Biomedical Optics, vol. 7, no. 2, pp. 262 – 270, 2002, ISSN: 10833668, (Cited by: 49; All Open Access, Bronze Open Access).
@article{Kishen2002262,
title = {Photomechanical investigations on post endodontically rehabilitated teeth},
author = {Anil Kishen and A. Asundi},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0036525880&doi=10.1117%2f1.1463046&partnerID=40&md5=315a7e9b57db39508b011a15035dbe71},
doi = {10.1117/1.1463046},
issn = {10833668},
year = {2002},
date = {2002-01-01},
journal = {Journal of Biomedical Optics},
volume = {7},
number = {2},
pages = {262 – 270},
abstract = {An investigation of the stress distribution patterns in post-core restored teeth and the behavior of dentin material to fracture propagation was conducted using experimental techniques such as digital photoelasticity (on photoelastic models), mechanical testing and scanning electron microscopy (SEM) (on extracted teeth). Digital photoelastic experiments showed that endodontic post-core restoration resulted in regions of high tensile stress and of stress concentrations in the remaining dentin structure. It was observed from mechanical testing that the fracture resistance in post-core restored teeth is. significantly lower (p<0.0001) than that in intact tooth. There was a significant correspondence between the plane of stress concentrations identified in the photoelastic models and in those of the plane of fracture exhibited by the rehabilitated tooth specimens. While the fracture of post-core rehabilitated teeth was consistent, that of control teeth was not as distinct. The SEM highlighted varying dentin response to fracture propagation at the inner core and the outer regions. The fractographs showed brittle and ductile response to fracture propagation in the outer and inner core dentin, respectively. These photomechanical studies highlighted that the stress concentrations, high tensile stress and loss of inner ductile dentin associated with post endodontic rehabilitation diminished their resistance to fracture. © 2002 Society of Photo-Optical Instrumentation Engineers.},
note = {Cited by: 49; All Open Access, Bronze Open Access},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
An investigation of the stress distribution patterns in post-core restored teeth and the behavior of dentin material to fracture propagation was conducted using experimental techniques such as digital photoelasticity (on photoelastic models), mechanical testing and scanning electron microscopy (SEM) (on extracted teeth). Digital photoelastic experiments showed that endodontic post-core restoration resulted in regions of high tensile stress and of stress concentrations in the remaining dentin structure. It was observed from mechanical testing that the fracture resistance in post-core restored teeth is. significantly lower (p<0.0001) than that in intact tooth. There was a significant correspondence between the plane of stress concentrations identified in the photoelastic models and in those of the plane of fracture exhibited by the rehabilitated tooth specimens. While the fracture of post-core rehabilitated teeth was consistent, that of control teeth was not as distinct. The SEM highlighted varying dentin response to fracture propagation at the inner core and the outer regions. The fractographs showed brittle and ductile response to fracture propagation in the outer and inner core dentin, respectively. These photomechanical studies highlighted that the stress concentrations, high tensile stress and loss of inner ductile dentin associated with post endodontic rehabilitation diminished their resistance to fracture. © 2002 Society of Photo-Optical Instrumentation Engineers.
John, M. Shelly; Kishen, Anil; Sing, Lim Chu; Asundi, Anand
Determination of bacterial activity by use of an evanescent-wave fiber-optic sensor Journal Article
In: Applied Optics, vol. 41, no. 34, pp. 7334 – 7338, 2002, ISSN: 1559128X, (Cited by: 24).
@article{John20027334,
title = {Determination of bacterial activity by use of an evanescent-wave fiber-optic sensor},
author = {M. Shelly John and Anil Kishen and Lim Chu Sing and Anand Asundi},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0036882091&doi=10.1364%2fAO.41.007334&partnerID=40&md5=00f7fb5e42fff7bfc281c45b3a2680b9},
doi = {10.1364/AO.41.007334},
issn = {1559128X},
year = {2002},
date = {2002-01-01},
journal = {Applied Optics},
volume = {41},
number = {34},
pages = {7334 – 7338},
abstract = {A novel technique based on fiber-optic evanescent-wave spectroscopy is proposed for the detection of bacterial activity in human saliva. The sensor determines the specific concentration of Streptococcus mutans in saliva, which is a major causative factor in dental caries. In this design, one prepares the fiber-optic bacterial sensor by replacing a portion of the cladding region of a multimode fiber with a dye-encapsulated xerogel, using the solgel technique. The exponential decay of the evanescent wave at the core–cladding interface of a multimode fiber is utilized for the determination of bacterial activity in saliva. The acidogenic profile of Streptococcus mutans is estimated by use of evanescent-wave absorption spectra at various levels of bacterial activity. © 2002 Optical Society of America.},
note = {Cited by: 24},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
A novel technique based on fiber-optic evanescent-wave spectroscopy is proposed for the detection of bacterial activity in human saliva. The sensor determines the specific concentration of Streptococcus mutans in saliva, which is a major causative factor in dental caries. In this design, one prepares the fiber-optic bacterial sensor by replacing a portion of the cladding region of a multimode fiber with a dye-encapsulated xerogel, using the solgel technique. The exponential decay of the evanescent wave at the core–cladding interface of a multimode fiber is utilized for the determination of bacterial activity in saliva. The acidogenic profile of Streptococcus mutans is estimated by use of evanescent-wave absorption spectra at various levels of bacterial activity. © 2002 Optical Society of America.
Kumar, A. R. Pradeep; Rao, C. V. Subba; Parameswaran, A.; Kishen, A.; Lim, C. S.
In: Journal of Oral Rehabilitation, vol. 29, no. 10, pp. 1003 – 1009, 2002, ISSN: 13652842, (Cited by: 2).
@article{PradeepKumar20021003,
title = {Scanning electron microscopic and energy dispersive spectrometric investigations on the effect of XeCl excimer laser on human dentin with smear layer},
author = {A. R. Pradeep Kumar and C. V. Subba Rao and A. Parameswaran and A. Kishen and C. S. Lim},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0036780435&doi=10.1046%2fj.1365-2842.2002.00973.x&partnerID=40&md5=dc1eabcb8a3c4de279d121bbd24afbea},
doi = {10.1046/j.1365-2842.2002.00973.x},
issn = {13652842},
year = {2002},
date = {2002-01-01},
journal = {Journal of Oral Rehabilitation},
volume = {29},
number = {10},
pages = {1003 – 1009},
abstract = {The purpose of this study was to study the effect of XeCl excimer laser on smear layer covered dentine of extracted human teeth. Twenty-four freshly extracted human molar teeth were collected and randomly divided into one control group and three experimental groups of six teeth each (groups A-D). The teeth in the experimental groups were irradiated with XeCl 308-nm excimer laser at a fluence of 04 J cm-2 and a constant pulse repetition rate of 25 Hz. Group A was used as the control, while groups B, C and D were irradiated at different exposure times of 3, 5 and 7 s, respectively. Subsequently these teeth specimens were subjected to scanning electron microscopic (SEM) examination and energy dispersive X-ray (EDX) spectrometric analysis. The SEM examination revealed melting of the smear layer covered dentin to conceal the underlying dentinal tubules. At a longer exposure time (7 s), dentin melted to form large grains and this resulted in non-uniform closure of underlying dentinal tubules. Under the conditions of this study, it is concluded that the pulsed XeCl 308-nm excimer laser at a fluence of 0.4 J cm-2, with an exposure time of 5 s uniformly occluded exposed smear layer covered dentine with no conspicuous variation in chemical structure. © 2002 Blackwell Science Ltd.},
note = {Cited by: 2},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The purpose of this study was to study the effect of XeCl excimer laser on smear layer covered dentine of extracted human teeth. Twenty-four freshly extracted human molar teeth were collected and randomly divided into one control group and three experimental groups of six teeth each (groups A-D). The teeth in the experimental groups were irradiated with XeCl 308-nm excimer laser at a fluence of 04 J cm-2 and a constant pulse repetition rate of 25 Hz. Group A was used as the control, while groups B, C and D were irradiated at different exposure times of 3, 5 and 7 s, respectively. Subsequently these teeth specimens were subjected to scanning electron microscopic (SEM) examination and energy dispersive X-ray (EDX) spectrometric analysis. The SEM examination revealed melting of the smear layer covered dentin to conceal the underlying dentinal tubules. At a longer exposure time (7 s), dentin melted to form large grains and this resulted in non-uniform closure of underlying dentinal tubules. Under the conditions of this study, it is concluded that the pulsed XeCl 308-nm excimer laser at a fluence of 0.4 J cm-2, with an exposure time of 5 s uniformly occluded exposed smear layer covered dentine with no conspicuous variation in chemical structure. © 2002 Blackwell Science Ltd.
Asundi, A.; Kishen, A.
Advanced digital photoelastic investigations on the tooth-bone interface Journal Article
In: Journal of Biomedical Optics, vol. 6, no. 2, pp. 224 – 230, 2001, ISSN: 10833668, (Cited by: 45; All Open Access, Bronze Open Access).
@article{Asundi2001224,
title = {Advanced digital photoelastic investigations on the tooth-bone interface},
author = {A. Asundi and A. Kishen},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0035297590&doi=10.1117%2f1.1344587&partnerID=40&md5=d79b4be1ca11b3bf1d07cd316e5aca16},
doi = {10.1117/1.1344587},
issn = {10833668},
year = {2001},
date = {2001-01-01},
journal = {Journal of Biomedical Optics},
volume = {6},
number = {2},
pages = {224 – 230},
abstract = {The purpose of this study was to investigate the behavior of the tooth-bone interface on the nature of stress distribution in the tooth and its supporting alveolar bone for various occlusal loads using an advanced digital photoelastic technique. A digital image processing system coupled with a circular polariscope was used for the stress analysis. The phase shift technique and a phase unwrapping algorithm was utilized for fringe processing. This aids in obtaining qualitative and quantitative information on the nature of stress distribution within the dento-osseous structures. The experiments revealed bending stresses within dento-osseous structures. However, the compressive stress magnitude was larger than the tensile stress. Zero stress regions were also identified within the dento-osseous structures. The results suggest that the geometry of the dento-osseous structures and the structural gradients at the tooth-bone interface play a significant role in the distribution of stresses without stress concentrations. Further, the application of an advanced image-processing system with the circular polariscope showed notable advantages and could be applied in other biomechanical investigations.},
note = {Cited by: 45; All Open Access, Bronze Open Access},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The purpose of this study was to investigate the behavior of the tooth-bone interface on the nature of stress distribution in the tooth and its supporting alveolar bone for various occlusal loads using an advanced digital photoelastic technique. A digital image processing system coupled with a circular polariscope was used for the stress analysis. The phase shift technique and a phase unwrapping algorithm was utilized for fringe processing. This aids in obtaining qualitative and quantitative information on the nature of stress distribution within the dento-osseous structures. The experiments revealed bending stresses within dento-osseous structures. However, the compressive stress magnitude was larger than the tensile stress. Zero stress regions were also identified within the dento-osseous structures. The results suggest that the geometry of the dento-osseous structures and the structural gradients at the tooth-bone interface play a significant role in the distribution of stresses without stress concentrations. Further, the application of an advanced image-processing system with the circular polariscope showed notable advantages and could be applied in other biomechanical investigations.
Kishen, A.; Asundi, A.
Investigations of thermal property gradients in the human dentine Journal Article
In: Journal of Biomedical Materials Research, vol. 55, no. 1, pp. 121 – 130, 2001, ISSN: 00219304, (Cited by: 37).
@article{Kishen2001121,
title = {Investigations of thermal property gradients in the human dentine},
author = {A. Kishen and A. Asundi},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0035131598&doi=10.1002%2f1097-4636%28200104%2955%3a1%3c121%3a%3aAID-JBM160%3e3.0.CO%3b2-5&partnerID=40&md5=58fab944a19c37dc6d5843b29f906078},
doi = {10.1002/1097-4636(200104)55:1<121::AID-JBM160>3.0.CO;2-5},
issn = {00219304},
year = {2001},
date = {2001-01-01},
journal = {Journal of Biomedical Materials Research},
volume = {55},
number = {1},
pages = {121 – 130},
abstract = {An investigation of the adaptation of dentine to temperature variation was conducted with the aid of digital moiré interferometry and thermomechanical analysis. The moiré interferometric patterns provided direct evidence of two major phases of thermally involved deformation in dentine. An initial phase of expansion was followed by contraction at higher temperatures. Significant gradients in thermal strain and the coefficient of thermal expansion were identified. Close agreement was found between the response of dentine to thermal changes as observed by moiré interferometry and that detected by thermomechanical analysis. This study highlights the biological adaptation of dentine to thermal variations. © 2001 John Wiley & Sons, Inc.},
note = {Cited by: 37},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
An investigation of the adaptation of dentine to temperature variation was conducted with the aid of digital moiré interferometry and thermomechanical analysis. The moiré interferometric patterns provided direct evidence of two major phases of thermally involved deformation in dentine. An initial phase of expansion was followed by contraction at higher temperatures. Significant gradients in thermal strain and the coefficient of thermal expansion were identified. Close agreement was found between the response of dentine to thermal changes as observed by moiré interferometry and that detected by thermomechanical analysis. This study highlights the biological adaptation of dentine to thermal variations. © 2001 John Wiley & Sons, Inc.
Krishnakumar, V.; Murukeshan, V. M.; Kishen, A.; Asundi, A.
Opto-digital system for curvature measurement Journal Article
In: Optical Engineering, vol. 40, no. 3, pp. 340 – 341, 2001, ISSN: 00913286, (Cited by: 10).
@article{Krishnakumar2001340,
title = {Opto-digital system for curvature measurement},
author = {V. Krishnakumar and V. M. Murukeshan and A. Kishen and A. Asundi},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0035270585&doi=10.1117%2f1.1346586&partnerID=40&md5=33bd861b6c5a70d3e3fa4d852f04ac7e},
doi = {10.1117/1.1346586},
issn = {00913286},
year = {2001},
date = {2001-01-01},
journal = {Optical Engineering},
volume = {40},
number = {3},
pages = {340 – 341},
abstract = {A quasi-real time technique incorporating the optodigital system was used to obtain the pure curvature fringes. The curvature fringes were isolated from the carrier shear fringes by an assymetrical Gausian filter. The curvature fringes in the digital method were obtained by Fourier filtering and the bandpass filtering was performed on the basis of knowledge of Fourier frequencies.},
note = {Cited by: 10},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
A quasi-real time technique incorporating the optodigital system was used to obtain the pure curvature fringes. The curvature fringes were isolated from the carrier shear fringes by an assymetrical Gausian filter. The curvature fringes in the digital method were obtained by Fourier filtering and the bandpass filtering was performed on the basis of knowledge of Fourier frequencies.
Kishen, Anil; Lim, C. S.; Asundi, A.
Three-dimensional bio-functional adaptation in human tooth Conference
vol. 4512, 2001, ISSN: 0277786X, (Cited by: 0; Conference name: Complex Adaptive Structures; Conference date: 4 June 2001 through 6 June 2001; Conference code: 60009).
@conference{Kishen2001107,
title = {Three-dimensional bio-functional adaptation in human tooth},
author = {Anil Kishen and C. S. Lim and A. Asundi},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0035767060&doi=10.1117%2f12.446757&partnerID=40&md5=6569316af4c0a7e3e301a81ec4fbea50},
doi = {10.1117/12.446757},
issn = {0277786X},
year = {2001},
date = {2001-01-01},
journal = {Proceedings of SPIE - The International Society for Optical Engineering},
volume = {4512},
pages = {107 – 117},
abstract = {It is understood that once human tooth erupts into the oral cavity it models or adapts to the functional requirements imposed on it. In this study, experiments were conducted to evaluate the nature of dentine mineralization and mechanical property gradients using fluoroscopic X-ray imaging and instrumented micro-indentation techniques respectively. It was found that dentine adapts as a complex structure with significant gradients in its mineralization and elastic modulus. A significant relationship between the pattern of mineralization and the spatial gradients in mechanical properties were observed in the sagittal and cross-sections of the dentine. The natural gradation in the mechanical properties is explained by the two-dimensional and three-dimensional stress analysis conducted in anatomical scaled dento-osseous models using digital photoelasticity. This work highlights dentine structure as a biologically adapted Functionally Graded Material.},
note = {Cited by: 0; Conference name: Complex Adaptive Structures; Conference date: 4 June 2001 through 6 June 2001; Conference code: 60009},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
It is understood that once human tooth erupts into the oral cavity it models or adapts to the functional requirements imposed on it. In this study, experiments were conducted to evaluate the nature of dentine mineralization and mechanical property gradients using fluoroscopic X-ray imaging and instrumented micro-indentation techniques respectively. It was found that dentine adapts as a complex structure with significant gradients in its mineralization and elastic modulus. A significant relationship between the pattern of mineralization and the spatial gradients in mechanical properties were observed in the sagittal and cross-sections of the dentine. The natural gradation in the mechanical properties is explained by the two-dimensional and three-dimensional stress analysis conducted in anatomical scaled dento-osseous models using digital photoelasticity. This work highlights dentine structure as a biologically adapted Functionally Graded Material.
Kishen, A.; Murukeshan, V. M.; Krishnakumar, V.; Asundi, A.
Analysis on the nature of thermally induced deformation in human dentine by electronic speckle pattern interferometry (ESPI) Journal Article
In: Journal of Dentistry, vol. 29, no. 8, pp. 531 – 537, 2001, ISSN: 03005712, (Cited by: 41).
@article{Kishen2001531,
title = {Analysis on the nature of thermally induced deformation in human dentine by electronic speckle pattern interferometry (ESPI)},
author = {A. Kishen and V. M. Murukeshan and V. Krishnakumar and A. Asundi},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0035513646&doi=10.1016%2fS0300-5712%2801%2900048-3&partnerID=40&md5=83c2b497647e39de195816e1018539cd},
doi = {10.1016/S0300-5712(01)00048-3},
issn = {03005712},
year = {2001},
date = {2001-01-01},
journal = {Journal of Dentistry},
volume = {29},
number = {8},
pages = {531 – 537},
abstract = {Objective: To examine the in-plane and out-of-plane response of human dentine to thermal loads in real time. Methods: An Electronic Speckle Pattern Interferometry (ESPI) system sensitive to both the in-plane and out-of-plane displacements was configured and used in conjunction with an advanced fringe processing technique. Specimens were prepared from freshly extracted lower central incisor teeth and were separately mounted on a thermal block to apply thermal loads from room temperature (25°C) to 60°C. The real time speckle patterns were acquired using a digital camera. These digital fringe patterns were subjected to further image processing to enhance the quality of fringes. The resultant images were later analyzed to study the out-of-plane and in-plane displacement gradients in the facio-lingual plane of the dentine. Results: The out-of-plane deformations were observed in the plane perpendicular to the long axis of the tooth, while the in-plane deformations occurred in the plane parallel to the long axis of the tooth. Conclusion: The ESPI analysis revealed whole-field and distinct thermal response in human dentine in-plane and out-of-plane. The cervical dentine experienced distinct and conspicuous displacement to the temperature changes. © 2001 Elsevier Science Ltd. All rights reserved.},
note = {Cited by: 41},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Objective: To examine the in-plane and out-of-plane response of human dentine to thermal loads in real time. Methods: An Electronic Speckle Pattern Interferometry (ESPI) system sensitive to both the in-plane and out-of-plane displacements was configured and used in conjunction with an advanced fringe processing technique. Specimens were prepared from freshly extracted lower central incisor teeth and were separately mounted on a thermal block to apply thermal loads from room temperature (25°C) to 60°C. The real time speckle patterns were acquired using a digital camera. These digital fringe patterns were subjected to further image processing to enhance the quality of fringes. The resultant images were later analyzed to study the out-of-plane and in-plane displacement gradients in the facio-lingual plane of the dentine. Results: The out-of-plane deformations were observed in the plane perpendicular to the long axis of the tooth, while the in-plane deformations occurred in the plane parallel to the long axis of the tooth. Conclusion: The ESPI analysis revealed whole-field and distinct thermal response in human dentine in-plane and out-of-plane. The cervical dentine experienced distinct and conspicuous displacement to the temperature changes. © 2001 Elsevier Science Ltd. All rights reserved.
Kishen, A.; John, M. S.; Chen, J. W.; Lim, C. S.; Xiao, Hu; Asundi, A.
A fiber optic evanescent wave (FOEW) microbial sensor for dental application Journal Article
In: Proceedings of SPIE - The International Society for Optical Engineering, vol. 4597, pp. 16 – 21, 2001, ISSN: 0277786X, (Cited by: 0).
@article{Kishen200116,
title = {A fiber optic evanescent wave (FOEW) microbial sensor for dental application},
author = {A. Kishen and M. S. John and J. W. Chen and C. S. Lim and Hu Xiao and A. Asundi},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0035772746&doi=10.1117%2f12.446654&partnerID=40&md5=a6b3249b7a88a7d33716f036d802e77b},
doi = {10.1117/12.446654},
issn = {0277786X},
year = {2001},
date = {2001-01-01},
journal = {Proceedings of SPIE - The International Society for Optical Engineering},
volume = {4597},
pages = {16 – 21},
abstract = {In this work a new approach based on the fiber Optic Evanescent Wave (FOEW) spectroscopy is developed for the effective determination of dental caries activity in human saliva. The biosensor design utilized the exponentially decaying wave that extends to the lower index region of the optical fiber's core-cladding interface. In order to achieve this, a short length of the cladding is removed and the fiber core surface is coated with a porous glass medium using sol-gel technique. The acidogenic profile resulting from the Streptococcus mutans activity in the human saliva is monitored using an indicator, which was encapsulated within the porous coating. These investigations display the potential benefits of FOEW based microbial sensor to monitor caries activity in human saliva.},
note = {Cited by: 0},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
In this work a new approach based on the fiber Optic Evanescent Wave (FOEW) spectroscopy is developed for the effective determination of dental caries activity in human saliva. The biosensor design utilized the exponentially decaying wave that extends to the lower index region of the optical fiber's core-cladding interface. In order to achieve this, a short length of the cladding is removed and the fiber core surface is coated with a porous glass medium using sol-gel technique. The acidogenic profile resulting from the Streptococcus mutans activity in the human saliva is monitored using an indicator, which was encapsulated within the porous coating. These investigations display the potential benefits of FOEW based microbial sensor to monitor caries activity in human saliva.
Kishen, Anil; Murukeshan, V. M.; Asundi, A.
Optical techniques for the evaluation of thermo-functional gradients in human dentine Conference
vol. 4101, Society of Photo-Optical Instrumentation Engineers, 2000, ISSN: 0277786X, (Cited by: 2; Conference name: Laser Interferometry X: Applications; Conference date: 2 August 2000 through 3 August 2000; Conference code: 57335).
@conference{Kishen2000B/,
title = {Optical techniques for the evaluation of thermo-functional gradients in human dentine},
author = {Anil Kishen and V. M. Murukeshan and A. Asundi},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0033716086&partnerID=40&md5=d32d4ad376fd4a28d7a91843ca5e8001},
issn = {0277786X},
year = {2000},
date = {2000-01-01},
journal = {Proceedings of SPIE - The International Society for Optical Engineering},
volume = {4101},
pages = {B/–},
publisher = {Society of Photo-Optical Instrumentation Engineers},
abstract = {Human tooth structure in the oral environment is affected by considerable thermal fluctuations while consuming hot and cold, fluids and food materials. This paper describes the use of digital moire interferometric technique and Electronic Speckle Pattern correlation Interferometry (ESPI) to study the behavior of the functionally adapted dentine materials to thermal loads in its own plane and out of plane. Further, this study also highlights the advantage of optical techniques with enhanced sensitivity and spatial resolution to examine the whole-field thermal property gradients in an anisotropic biological material such as human dentine.},
note = {Cited by: 2; Conference name: Laser Interferometry X: Applications; Conference date: 2 August 2000 through 3 August 2000; Conference code: 57335},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
Human tooth structure in the oral environment is affected by considerable thermal fluctuations while consuming hot and cold, fluids and food materials. This paper describes the use of digital moire interferometric technique and Electronic Speckle Pattern correlation Interferometry (ESPI) to study the behavior of the functionally adapted dentine materials to thermal loads in its own plane and out of plane. Further, this study also highlights the advantage of optical techniques with enhanced sensitivity and spatial resolution to examine the whole-field thermal property gradients in an anisotropic biological material such as human dentine.
Kishen, A.; Ramamurty, U.; Asundi, A.
Experimental studies on the nature of property gradients in the human dentine Journal Article
In: Journal of Biomedical Materials Research, vol. 51, no. 4, pp. 650 – 659, 2000, ISSN: 00219304, (Cited by: 70).
@article{Kishen2000650,
title = {Experimental studies on the nature of property gradients in the human dentine},
author = {A. Kishen and U. Ramamurty and A. Asundi},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0034666758&doi=10.1002%2f1097-4636%2820000915%2951%3a4%3c650%3a%3aAID-JBM13%3e3.0.CO%3b2-H&partnerID=40&md5=34edec93ba16d399a07f6cd3998d3250},
doi = {10.1002/1097-4636(20000915)51:4<650::AID-JBM13>3.0.CO;2-H},
issn = {00219304},
year = {2000},
date = {2000-01-01},
journal = {Journal of Biomedical Materials Research},
volume = {51},
number = {4},
pages = {650 – 659},
publisher = {John Wiley & Sons Inc},
abstract = {We conducted an investigation into the nature of dentine mineralization and mechanical property gradients with the aid of experimental techniques such as the fluoroscopic X-ray microanalysis and instrumented microindentation, respectively. It was found that the tooth adapts to a complex structure with significant gradients in properties. We observed a significant correlation between the degree of mineralization within the dentine and the mechanical properties. The natural gradation in mechanical properties is explained by the stress analysis within anatomical-sized tooth specimens done using digital photoelasticity. These results are explained within the context of the functional requirements that are imposed on the tooth. This study highlights tooth structure as a biologically adapted, functionally graded material. (C) 2000 John Wiley and Sons, Inc.; We conducted an investigation into the nature of dentine mineralization and mechanical property gradients with the aid of experimental techniques such as the fluoroscopic X-ray microanalysis and instrumented microindentation, respectively. It was found that the tooth adapts to a complex structure with significant gradients in properties. We observed a significant correlation between the degree of mineralization within the dentine and the mechanical properties. The natural gradation in mechanical properties is explained by the stress analysis within anatomical-sized tooth specimens done using digital photoelasticity. These results are explained within the context of the functional requirements that are imposed on the tooth. This study highlights tooth structure as a biologically adapted, functionally graded material.},
note = {Cited by: 70},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
We conducted an investigation into the nature of dentine mineralization and mechanical property gradients with the aid of experimental techniques such as the fluoroscopic X-ray microanalysis and instrumented microindentation, respectively. It was found that the tooth adapts to a complex structure with significant gradients in properties. We observed a significant correlation between the degree of mineralization within the dentine and the mechanical properties. The natural gradation in mechanical properties is explained by the stress analysis within anatomical-sized tooth specimens done using digital photoelasticity. These results are explained within the context of the functional requirements that are imposed on the tooth. This study highlights tooth structure as a biologically adapted, functionally graded material. (C) 2000 John Wiley and Sons, Inc.; We conducted an investigation into the nature of dentine mineralization and mechanical property gradients with the aid of experimental techniques such as the fluoroscopic X-ray microanalysis and instrumented microindentation, respectively. It was found that the tooth adapts to a complex structure with significant gradients in properties. We observed a significant correlation between the degree of mineralization within the dentine and the mechanical properties. The natural gradation in mechanical properties is explained by the stress analysis within anatomical-sized tooth specimens done using digital photoelasticity. These results are explained within the context of the functional requirements that are imposed on the tooth. This study highlights tooth structure as a biologically adapted, functionally graded material.
Asundi, Anand; Kishen, Anil
A strain gauge and photoelastic analysis of in vivo strain and in vitro stress distribution in human dental supporting structures Journal Article
In: Archives of Oral Biology, vol. 45, no. 7, pp. 543 – 550, 2000, ISSN: 00039969, (Cited by: 99).
@article{Asundi2000543,
title = {A strain gauge and photoelastic analysis of in vivo strain and in vitro stress distribution in human dental supporting structures},
author = {Anand Asundi and Anil Kishen},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0034045848&doi=10.1016%2fS0003-9969%2800%2900031-5&partnerID=40&md5=aca419f6a9e692c9470d292e248d5436},
doi = {10.1016/S0003-9969(00)00031-5},
issn = {00039969},
year = {2000},
date = {2000-01-01},
journal = {Archives of Oral Biology},
volume = {45},
number = {7},
pages = {543 – 550},
abstract = {Strain gauge and photoelastic experiments have been workhorses of experimental stress analysis for over 50 years. In this study, both were used to analyse the nature of stress distribution from the tooth root surface to the supporting alveolar bone. Such studies help in understanding the behaviour of dental supporting structures under physiological function. In the strain gauge experiment, the mechanical strains were measured on the supporting bone surface and the root surface of the tooth under applied bite force. It was found that higher strains were distributed along the cervical region of the supporting bone and the root surface. The photoelastic study was also done to evaluate the stress distribution pattern from the root surface to the supporting bone under clinical conditions. The stress patterns were found to decrease from the cervical to the apical region of the root surface. These studies highlight the role of the periodontium in stress distribution and bone remodelling. (C) 2000 Elsevier Science Ltd.},
note = {Cited by: 99},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Strain gauge and photoelastic experiments have been workhorses of experimental stress analysis for over 50 years. In this study, both were used to analyse the nature of stress distribution from the tooth root surface to the supporting alveolar bone. Such studies help in understanding the behaviour of dental supporting structures under physiological function. In the strain gauge experiment, the mechanical strains were measured on the supporting bone surface and the root surface of the tooth under applied bite force. It was found that higher strains were distributed along the cervical region of the supporting bone and the root surface. The photoelastic study was also done to evaluate the stress distribution pattern from the root surface to the supporting bone under clinical conditions. The stress patterns were found to decrease from the cervical to the apical region of the root surface. These studies highlight the role of the periodontium in stress distribution and bone remodelling. (C) 2000 Elsevier Science Ltd.
Kishen, Anil; Asundi, Anand
Biofunctional adaptation of human dentine Conference
vol. 2, IEEE, 1999, ISSN: 05891019, (Cited by: 0; Conference name: Proceedings of the 1999 IEEE Engineering in Medicine and Biology 21st Annual Conference and the 1999 Fall Meeting of the Biomedical Engineering Society (1st Joint BMES / EMBS); Conference date: 13 October 1999 through 16 October 1999; Conference code: 56236).
@conference{Kishen1999765,
title = {Biofunctional adaptation of human dentine},
author = {Anil Kishen and Anand Asundi},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0033356067&partnerID=40&md5=b69249c41268df877e43b8b4d1ad78b2},
issn = {05891019},
year = {1999},
date = {1999-01-01},
journal = {Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings},
volume = {2},
pages = {765},
publisher = {IEEE},
abstract = {Experimental studies were carried out using (1) digital photoelastic technique to analyze the stress patterns within the tooth, (2) microscopic x-ray imaging technique to determine the mineral density distribution and (3) micro-indentation method to study the gradients in material characteristics along the dentine. It was found that there was a significant correlation between the patterns of stress distribution within the tooth and the gradients in material characteristics.},
note = {Cited by: 0; Conference name: Proceedings of the 1999 IEEE Engineering in Medicine and Biology 21st Annual Conference and the 1999 Fall Meeting of the Biomedical Engineering Society (1st Joint BMES / EMBS); Conference date: 13 October 1999 through 16 October 1999; Conference code: 56236},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
Experimental studies were carried out using (1) digital photoelastic technique to analyze the stress patterns within the tooth, (2) microscopic x-ray imaging technique to determine the mineral density distribution and (3) micro-indentation method to study the gradients in material characteristics along the dentine. It was found that there was a significant correlation between the patterns of stress distribution within the tooth and the gradients in material characteristics.
Asundi, A.; Kishen, A.
Biomechanics of endodontic endosseous implants - A comparative photoelastic evaluation Journal Article
In: Dental Traumatology, vol. 15, no. 2, pp. 83 – 87, 1999, ISSN: 16004469, (Cited by: 7).
@article{Asundi199983,
title = {Biomechanics of endodontic endosseous implants - A comparative photoelastic evaluation},
author = {A. Asundi and A. Kishen},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0033114011&doi=10.1111%2fj.1600-9657.1999.tb00759.x&partnerID=40&md5=2e0fd3050c5257425412e66f04261cec},
doi = {10.1111/j.1600-9657.1999.tb00759.x},
issn = {16004469},
year = {1999},
date = {1999-01-01},
journal = {Dental Traumatology},
volume = {15},
number = {2},
pages = {83 – 87},
publisher = {Blackwell Munksgaard},
abstract = {Dental biomechanics is an interdisciplinary study wherein engineering principles are used for the better understanding of clinical dentistry. The present biomechanical study was done to understand the mechanism by which an endodontic implant transmits occlusal forces to the surrounding bone. In this experimental study, photoelastic techniques were utilized to compare stress distribution patterns in the supporting bone of an intact tooth, a tooth with supporting bone loss, and a tooth stabilized using an endodontic endosseous implant. It was concluded that there were distinct variations in the biomechanics underlying various dental clinical conditions. Further, the implant did not appear to improve the stress distribution.},
note = {Cited by: 7},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Dental biomechanics is an interdisciplinary study wherein engineering principles are used for the better understanding of clinical dentistry. The present biomechanical study was done to understand the mechanism by which an endodontic implant transmits occlusal forces to the surrounding bone. In this experimental study, photoelastic techniques were utilized to compare stress distribution patterns in the supporting bone of an intact tooth, a tooth with supporting bone loss, and a tooth stabilized using an endodontic endosseous implant. It was concluded that there were distinct variations in the biomechanics underlying various dental clinical conditions. Further, the implant did not appear to improve the stress distribution.