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Proceedings Paper

Thermal and noise level characteristics of hard dental tissue ablation with 350-fs pulse laser
Author(s): Joseph Neev; Daniel S. Huynh; William A. Carrasco; Petra B. B. Wilder-Smith; Luiz Barroca Da Silva; Michael D. Feit; Michael D. Perry; Alexander M. Rubenchik; Brent C. Stuart
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Paper Abstract

In spite of intensive research, lasers have not replaced conventional tools in many hard tissue applications. Low removal rates, loud operation noise, and mechanical and thermal damage are among the main obstacles to successful application of lasers. Ultrashort pulse lasers offer several advantages in their high per-pulse-efficiency, negligible thermal and mechanical damage and low noise operation. Practical applications of these devices, however, depends critically on sufficiently high volume removal which should match or even exceed the high speed drill. In our study, acoustical output of the USPL is compared to the low and high speed dental drill, Er:YAG, and Ho:YSGG lasers. Noise levels of the USPL are shown to be negligible in comparison with all other tested system. In addition, thermal characteristics of hard dental tissue ablation by ultrashort pulse laser of low and high pulse repetition rates are presented. Encouraging results showing temperatures increases smaller than 10 degree(s)C even at the highest pulse repetition rates (1 KHz) are presented. A simple model for heat diffusion is discussed.

Paper Details

Date Published: 23 April 1996
PDF: 9 pages
Proc. SPIE 2672, Lasers in Dentistry II, (23 April 1996); doi: 10.1117/12.238776
Show Author Affiliations
Joseph Neev, Beckman Laser Institute and Medical Clinic (United States)
Daniel S. Huynh, Beckman Laser Institute and Medical Clinic (United States)
William A. Carrasco, Beckman Laser Institute and Medical Clinic (United States)
Petra B. B. Wilder-Smith, Beckman Laser Institute and Medical Clinic (United States)
Luiz Barroca Da Silva, Lawrence Livermore National Lab. (United States)
Michael D. Feit, Lawrence Livermore National Lab. (United States)
Michael D. Perry, Lawrence Livermore National Lab. (United States)
Alexander M. Rubenchik, Lawrence Livermore National Lab. (United States)
Brent C. Stuart, Lawrence Livermore National Lab. (United States)


Published in SPIE Proceedings Vol. 2672:
Lasers in Dentistry II
Harvey A. Wigdor D.D.S.; John D. B. Featherstone; Joel M. White D.D.S.; Joseph Neev, Editor(s)

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