23 February 2009 Laser ablation of dental calculus at 400 nm using a Ti:sapphire laser
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Proceedings Volume 7162, Lasers in Dentistry XV; 71620E (2009) https://doi.org/10.1117/12.814859
Event: SPIE BiOS, 2009, San Jose, California, United States
A Nd:YAG laser-pumped, frequency-doubled Ti:sapphire laser is used for selective ablation of calculus. The laser provides ≤25 mJ at 400 nm (60-ns pulse width, 10-Hz repetition rate). The laser is coupled into an optical multimode fiber coiled around a 4-in.-diam drum to generate a top-hat output intensity profile. With coaxial water cooling, this is ideal for efficient, selective calculus removal. This is in stark contrast with tightly focused Gaussian beams that are energetically inefficient and lead to irreproducible results. Calculus is well ablated at high fluences ≥2J/cm2; stalling occurs below this fluence because of photobleaching. Healthy hard tissue is not removed at fluences ≤3 J/cm2.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Joshua E. Schoenly, Joshua E. Schoenly, Wolf Seka, Wolf Seka, Peter Rechmann, Peter Rechmann, } "Laser ablation of dental calculus at 400 nm using a Ti:sapphire laser", Proc. SPIE 7162, Lasers in Dentistry XV, 71620E (23 February 2009); doi: 10.1117/12.814859; https://doi.org/10.1117/12.814859

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