Research Topics
| D FriedSummaryAffiliation: University of California Country: USA Publications
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Detail Information
Publications
Dental hard tissue modification and removal using sealed transverse excited atmospheric-pressure lasers operating at lambda=9.6 and 10.6 micromD Fried
University of California, San Francisco, California 94143 0758, USA
J Biomed Opt 6:231-8. 2001..This results in a practical and efficient CO(2) laser system for caries ablation and surface modification...- Imaging caries lesions and lesion progression with polarization sensitive optical coherence tomographyDaniel Fried
University of California, San Francisco, Department of Preventive and Restorative Dental Science, San Francisco, California 94143, USA
J Biomed Opt 7:618-27. 2002.... - Thermal and chemical modification of dentin by 9-11-microm CO2 laser pulses of 5-100-micros durationDaniel Fried
Department of Preventive and Restorative Dental Sciences, University of California, San Francisco, San Francisco, California 94143, USA
Lasers Surg Med 31:275-82. 2002..The implications are important for the potential laser modification or removal of dentinal and root caries and the transformation of dentin to a more acid resistant mineralized tissue... - Mechanism of water augmentation during IR laser ablation of dental enamelDaniel Fried
Department of Preventive and Restorative Dental Sciences, University of California, San Francisco, San Francisco, California 94143, USA
Lasers Surg Med 31:186-93. 2002..The influence of an optically thick applied water layer on the laser ablation of enamel was investigated at wavelengths in which water is a primary absorber and the magnitude of absorption varies markedly... - Residual heat deposition in dental enamel during IR laser ablation at 2.79, 2.94, 9.6, and 10.6 micromD Fried
Department of Preventive and Restorative Dental Sciences, University of California, San Francisco, California 94143, USA
Lasers Surg Med 29:221-9. 2001..Optimal laser ablation systems minimize the residual heat deposition in the tooth by efficiently transferring the deposited laser energy to kinetic and internal energy of ejected tissue components... - Early caries imaging and monitoring with near-infrared lightDaniel Fried
Department of Preventive and Restorative Dental Sciences, University of California San Francisco, 707 Parnassus Avenue, San Francisco, CA 94143, USA
Dent Clin North Am 49:771-93, vi. 2005..This article discusses the NIR optical properties of sound and demineralized dental enamel and the potential use of polarization sensitive optical coherence tomography and NIR transillumination for the imaging of dental caries... 
High contrast near-infrared polarized reflectance images of demineralization on tooth buccal and occlusal surfaces at lambda = 1310-nmJ Wu
Department of Growth and Development, University of California, San Francisco, California 94143 0758, USA
Lasers Surg Med 41:208-13. 2009....- Nondestructive assessment of dentin demineralization using polarization-sensitive optical coherence tomography after exposure to fluoride and laser irradiationSaman K Manesh
Department of Preventive and Restorative Dental Sciences, University of California, San Francisco, California 94143 0758, USA
J Biomed Mater Res B Appl Biomater 90:802-12. 2009..PLM and TMR corroborated those results. This study demonstrates that PS-OCT can be used to measure demineralization on dentin surfaces and determine the degree of inhibition of demineralization by anticaries agents... - Remineralization of enamel caries can decrease optical reflectivityR S Jones
Department of Preventive and Restorative Dental Sciences, Box 0758, 707 Parnassus Ave, University of California, San Francisco, San Francisco, CA 94143-0758, USA
J Dent Res 85:804-8. 2006..Mineral volume changes arising from remineralization can be measured on the basis of the optical reflectivity of the lesion... - Dentin caries zones: mineral, structure, and propertiesM K Pugach
Department of Preventive and Restorative Dental Sciences, University of California, 707 Parnassus Ave Box 0758, Dentistry 2246, San Francisco, CA 94143 0758, USA
J Dent Res 88:71-6. 2009..5 [10.6-25.3] GPa to 1.6 [0.0-5.0] GPa and from 42.9 [39.8-44.6] vol% to 12.4 [9.1-14.2] vol%, respectively. Even the most demineralized pink zone contained considerable residual mineral... - Rapid and conservative ablation and modification of enamel, dentin, and alveolar bone using a high repetition rate transverse excited atmospheric pressure CO2 laser operating at lambda=9.3 microKenneth Fan
University of California at San Francisco, Preventative and Restorative Dental Sciences, California 94143, USA
J Biomed Opt 11:064008. 2006..These results suggest that high repetition rate TEA CO(2) laser systems operating at lambda=9.3 microm with pulse durations of 10 to 20 micros are well suited for dental applications... - Adhesion of composite to enamel and dentin surfaces irradiated by IR laser pulses of 0.5-35 micros durationMichal Staninec
University of California, San Francisco, California 94143-0758, USA
J Biomed Mater Res B Appl Biomater 79:193-201. 2006..Some of these groups were not significantly different from nonirradiated, acid-etch-only positive control groups... - Influence of an optically thick water layer on the bond-strength of composite resin to dental enamel after IR laser ablationMichal Staninec
Department of Preventive and Restorative Dental Sciences, University of California-San Francisco, San Francisco, CA 94143-0758, USA
Lasers Surg Med 33:264-9. 2003..2003... - Imaging artificial caries on the occlusal surfaces with polarization-sensitive optical coherence tomographyR S Jones
Department of Preventive and Restorative Dental Sciences, University of California, San Francisco, CA 94143-0758, USA
Caries Res 40:81-9. 2006..This optical method has promising applications for in vivo detection and monitoring of early enamel occlusal caries... - Real-time near IR (1310 nm) imaging of CO2 laser ablation of enamelCynthia L Darling
Department of Preventive and Restorative Dental Sciences, University of California, San Francisco, School of Dentistry, CA 94143 0758, USA
Opt Express 16:2685-93. 2008.... - Dissolution studies of bovine dental enamel surfaces modified by high-speed scanning ablation with a lambda = 9.3-microm TEA CO(2) laserDaniel Fried
Department of Preventive and Restorative Dental Sciences, University of California, San Francisco, California 94143, USA
Lasers Surg Med 38:837-45. 2006..Such a modified layer of enamel formed at the base and walls of a cavity preparation under the irradiation conditions employed in this study have the potential to inhibit secondary caries under sealants and restorations... - Selective ablation of surface enamel caries with a pulsed Nd:YAG dental laserDavid M Harris
Department of Preventive and Restorative Dental Sciences, University of California, San Francisco, California, USA
Lasers Surg Med 30:342-50. 2002..Safety and efficacy of the clinical procedure was evaluated in two sets of clinical trials at three dental schools. Selective ablation was evaluated with FTIR spectroscopy... - Selective targeting of protein, water, and mineral in dentin using UV and IR pulse lasers: the effect on the bond strength to composite restorative materialsKarishma K Sheth
Department of Preventive and Restorative Dental Sciences, University of California-San Francisco, San Francisco, CA 94143-0758, USA
Lasers Surg Med 35:245-53. 2004..Laser groups without water had significantly reduced bond strengths and thicker layers of thermally damaged dentin. CONCLUSIONS: Thermal damage to the collagen matrix profoundly influences the bond strength to composite restorations... - Irradiation of dental enamel with Q-switched lambda = 355-nm laser pulses: surface morphology, fluoride adsorption, and adhesion to composite resinCameron R Wheeler
Department of Growth and Development, University of California, San Francisco, California 94143, USA
Lasers Surg Med 32:310-7. 2003.... - Weakening of dentin from cracks resulting from laser irradiationMichal Staninec
Department of Preventive and Restorative Dental Sciences, University of California, San Francisco, CA 94143, USA
Dent Mater 25:520-5. 2009..A one-way ANOVA determined a significant difference between groups C and D, p<0.001. Conclusion: The Q-switched Er-YSGG laser without water caused cracks in the surface that significantly decreased the bending strength of dentin... 
Non-destructive assessment of inhibition of demineralization in dental enamel irradiated by a lambda=9.3-microm CO2 laser at ablative irradiation intensities with PS-OCTAnna M Can
University of California, San Francisco, California 94143 0758, USA
Lasers Surg Med 40:342-9. 2008..The purpose of this study was to demonstrate that PS-OCT can be used to measure demineralization in craters/incisions prepared in enamel by a CO(2) laser operating at the high irradiation intensities required for cavity preparations...- Polarization-sensitive optical coherence tomographic imaging of artificial demineralization on exposed surfaces of tooth rootsChulsung Lee
Department of Preventive and Restorative Dental Sciences, University of California, San Francisco, CA 94143 0758, USA
Dent Mater 25:721-8. 2009..Although PS-OCT imaging studies have demonstrated the utility of PS-OCT for imaging carious lesions on enamel and dentin surfaces the influence of the cementum layer that is present on intact root surfaces has not been investigated... - Selective removal of residual composite from dental enamel surfaces using the third harmonic of a Q-switched Nd:YAG laserRobert Alexander
Department of Growth and Development, University of California, San Francisco, California 94143, USA
Lasers Surg Med 30:240-5. 2002..CONCLUSION: This study demonstrates that 355-nm, 10 ns laser pulses can be used for the selective ablation of dental composite without thermal or mechanical damage to the underlying enamel... - Automated analysis of lesion depth and integrated reflectivity in PS-OCT scans of tooth demineralizationMichael H Le
Department of Preventive and Restorative Dental Sciences, University of California, San Francisco, San Francisco, California 94143 0758, USA
Lasers Surg Med 42:62-8. 2010..The purpose of this study was to develop methods for the automated assessment of the depth and severity of demineralization in PS-OCT scans... - In vivo near-IR imaging of approximal dental decay at 1,310 nmMichal Staninec
Department of Preventive and Restorative Dental Sciences, School of Dentistry, University of California, San Francisco, California 94143 0758, USA
Lasers Surg Med 42:292-8. 2010..We present the results of the first in vivo imaging study in which NIR images were acquired of approximal contact surfaces... - Light scattering properties of natural and artificially demineralized dental enamel at 1310 nmCynthia L Darling
University of California, San Francisco, 94143-0758, USA
J Biomed Opt 11:34023. 2006..Natural and artificial demineralization increases the scattering coefficient more than two orders of magnitude at 1310 nm, and the scattering is highly forward directed... - Peripheral thermal and mechanical damage to dentin with microsecond and sub-microsecond 9.6 microm, 2.79 microm, and 0.355 microm laser pulsesAlfredo Dela Rosa
University of California, San Francisco, San Francisco, California 94143-0758, USA
Lasers Surg Med 35:214-28. 2004..Sub-microsecond pulsed IR lasers resonant with water and mineral absorption bands ablate dentin efficiently with minimal thermal damage. Similar laser parameters are expected to apply to the ablation of alveolar bone... - Nondestructive measurement of the inhibition of demineralization on smooth surfaces using polarization-sensitive optical coherence tomographySherri L Chong
School of Dentistry, University of California, San Francisco, California 94143, USA
Lasers Surg Med 39:422-7. 2007.... - Near-infrared image-guided laser ablation of dental decayYou Chen Tao
University of California, San Francisco, San Francisco School of Dentistry, Department of Preventive and Restorative Dental Sciences, 707 Parnassus Avenue, San Francisco, California 94143 0758, USA
J Biomed Opt 14:054045. 2009..These promising results suggest that NIR and PS-OCT imaging systems can be integrated with a CO(2) laser ablation system for the selective removal of dental caries... - Nondestructive assessment of the inhibition of enamel demineralization by CO2 laser treatment using polarization sensitive optical coherence tomographyDennis J Hsu
University of California, San Francisco School of Dentistry, Department of Preventative and Restorative Dental Sciences, San Francisco, California 94143 0758, USA
J Biomed Opt 13:054027. 2008..This study shows that the PS-OCT is well suited for the clinical assessment of caries inhibition after laser treatments... - Selective removal of composite sealants with near-ultraviolet laser pulses of nanosecond durationTiffany M Louie
University of California, Department of Preventive and Restorative Dental Sciences, San Francisco, California 94143-0758, USA
J Biomed Opt 10:14001. 2005..Selective removal of composite restorative materials is possible without damage to the underlying sound tooth structure... - Polarization-sensitive optical coherence tomography for the nondestructive assessment of the remineralization of dentinSaman K Manesh
University of California, Department of Preventative and Restorative Dental Sciences, San Francisco, California 94143 0758, USA
J Biomed Opt 14:044002. 2009..Polorized light microscopy (PLM) and transverse microradiography (TMR) corroborated those results. PS-OCT can be used for the nondestructive measurement of the remineralization of dentin... - Pulpal effects of enamel ablation with a microsecond pulsed lambda = 9.3-microm CO2 laserMichal Staninec
Department of Preventive and Restorative Dental Sciences, UCSF School of Dentistry, 707 Parnassus Ave, San Francisco, California 94143 0758, USA
Lasers Surg Med 41:256-63. 2009..The purpose of this study was to evaluate the pulpal safety of laser irradiation of tooth occlusal surfaces under the conditions required for small conservative preparations confined to enamel... - Measurement of the severity of natural smooth surface (interproximal) caries lesions with polarization sensitive optical coherence tomographyPatara Ngaotheppitak
Department of Preventive and Restorative Dental Sciences, University of California-San Francisco, 707 Parnassus Avenue, San Francisco, CA 94143, USA
Lasers Surg Med 37:78-88. 2005..Therefore, PS-OCT has considerable potential as a non-destructive clinical probe of early caries lesions to assess their severity, monitor their progression over-time and potentially assess lesion activity... - Pulpal safety of 9.6 microm TEA CO2 laser used for caries preventionHarold E Goodis
Department of Preventive and Restorative Dental Sciences, University of California, San Francisco, California, USA
Lasers Surg Med 35:104-10. 2004..A new 9.6 microm wavelength transverse excited atmospheric pressure (TEA) CO2 laser (Argus Photonics, Jupiter, FL) has been investigated as a device that can be used for this purpose without harming the dental pulp... - Remineralization of in vitro dental caries assessed with polarization-sensitive optical coherence tomographyRobert S Jones
University of California, Department of Preventive and Restorative Dental Sciences, San Francisco, California 94143, USA
J Biomed Opt 11:014016. 2006..This study determines that PS-OCT can image the effects of fluoride-enhanced remineralization of mild and severe early artificial in vitro caries... - Near-infrared imaging of developmental defects in dental enamelKrista Hirasuna
University of California, San Francisco, San Francisco, California 94143 0758, USA
J Biomed Opt 13:044011. 2008..This study suggests that PS-OCT and NIR methods may potentially be used as tools to assess the severity and extent of enamel defects... - Imaging artificial caries under composite sealants and restorationsRobert S Jones
University of California, Department of Preventive and Restorative Dental Sciences, San Francisco, California 94143-0758, USA
J Biomed Opt 9:1297-304. 2004..6-dB difference from the control samples (t-test, p<0.001). This study demonstrates that PS-OCT can be used to track lesion progression on occlusal surfaces nondestructively with or without sealants... - Transmission of Q-switched erbium:YSGG (lambda=2.79 microm) and erbium:YAG (lambda=2.94 microm) laser radiation through germanium oxide and sapphire optical fibres at high pulse energiesNathaniel M Fried
Department of Urology, Johns Hopkins Medical Institutions, 4940 Eastern Avenue, Building A, Baltimore, Maryland, MD 21224, USA
Lasers Med Sci 19:155-60. 2004..This is the first report of germanium and sapphire fibre optic transmission of Q-switched erbium laser energies of 25-42 mJ per pulse...