31 December 1993 Erbium:YAG laser radiation interaction with dental tissue
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Proceedings Volume 2080, Dental Applications of Lasers; (1993) https://doi.org/10.1117/12.166186
Event: Europto Biomedical Optics '93, 1993, Budapest, Hungary
Abstract
The ablative mechanism associated with the interaction of erbium:YAG laser radiation with dental tissue has been studied. The rates of ablation in dentine and enamel of extracted human teeth were determined and compared to a theoretical model. Ablative threshold energy densities were 10 +/- 2 and 25 +/- 8 J cm-2 and effective absorption coefficients were 380 +/- 30 and 240 +/- 40 cm-1, for dentine and enamel respectively. Using an optical probe beam, the dynamics of the ejected plume has been investigated in dentine. The mean velocity of the plume was 350 +/- 60 m s-1. Histological sections of ablations were also produced, and the extent of secondary thermal damage assessed. The implications of these results for laser ablation of dental tissue are discussed.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Neil M. Wannop, Mark Russell Dickinson, Terence A. King, "Erbium:YAG laser radiation interaction with dental tissue", Proc. SPIE 2080, Dental Applications of Lasers, (31 December 1993); doi: 10.1117/12.166186; https://doi.org/10.1117/12.166186
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