Cavitation bubbles induced by Erbium lasers: implications for dentistry

Marja Verleng; Rudolf Verdaasdonk; Albert van der Veen; Vladimir Lemberg; Dmitri Boutoussov

doi:10.1117/12.2039282

18 February 2014 Cavitation bubbles induced by Erbium lasers: implications for dentistry

Marja Verleng, Rudolf Verdaasdonk, Albert van der Veen, Vladimir Lemberg, Dmitri Boutoussov

Proceedings Volume 8929, Lasers in Dentistry XX; 89290B (2014) https://doi.org/10.1117/12.2039282
Event: SPIE BiOS, 2014, San Francisco, California, United States

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).

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Marja Verleng, Rudolf Verdaasdonk, Albert van der Veen, Vladimir Lemberg, and Dmitri Boutoussov "Cavitation bubbles induced by Erbium lasers: implications for dentistry", Proc. SPIE 8929, Lasers in Dentistry XX, 89290B (18 February 2014); https://doi.org/10.1117/12.2039282

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KEYWORDS

Cavitation

Er:YAG lasers

Erbium lasers

Laser dentistry

Explosives

Pulsed laser operation

Dentistry

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