31 December 1993 Erbium:YAG laser radiation interaction with dental tissue
Author Affiliations +
Proceedings Volume 2080, Dental Applications of Lasers; (1993) https://doi.org/10.1117/12.166186
Event: Europto Biomedical Optics '93, 1993, Budapest, Hungary
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, Neil M. Wannop, Mark Russell Dickinson, Mark Russell Dickinson, Terence A. King, 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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