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Proceedings Paper

Cavitation bubbles induced by Erbium lasers: implications for dentistry
Author(s): Marja Verleng; Rudolf Verdaasdonk; Albert van der Veen; Vladimir Lemberg; Dmitri Boutoussov
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Paper Abstract

With new fiber systems available for 3 μm, Erbium lasers become more interesting for precise tissue ablation in a water environment enabling new application in e.g. dentistry. The dynamics of explosive bubble formation was investigated at 2.78 μm (Er,Cr;YSGG) and 2.94 μm (Er:YAG), in relation to energy (10-50 mJ), pulse length (20–150 μs) and fiber tip shape (flat or taper). The dynamics of exploding and imploding vapor bubbles were captured with high speed imaging (10 - 300 μs range). Increasing the pulse length and energy, the vapor bubble became more elongated with an opaque surface for flat tip fibers. Tapered fibers produced spherical vapor bubbles with an optically transparent surface expected to be more forceful for creating mechanical effects in both hard and soft tissues. There was no significant difference between bubbles formed at 2.78 μm (Er,Cr;YSGG) and 2.94 μm (Er:YAG).

Paper Details

Date Published: 18 February 2014
PDF: 11 pages
Proc. SPIE 8929, Lasers in Dentistry XX, 89290B (18 February 2014); doi: 10.1117/12.2039282
Show Author Affiliations
Marja Verleng, Vrije Univ. Medical Ctr. (Netherlands)
Rudolf Verdaasdonk, Vrije Univ. Medical Ctr. (Netherlands)
Albert van der Veen, Vrije Univ. Medical Ctr. (Netherlands)
Vladimir Lemberg, Biolase Inc. (United States)
Dmitri Boutoussov, Biolase Inc. (United States)


Published in SPIE Proceedings Vol. 8929:
Lasers in Dentistry XX
Peter Rechmann; Daniel Fried, Editor(s)

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