Acoustic differentiation of dental soft and hard tissues using remote speckle-analysis during Er:YAG ablation

Benjamin Lengenfelder; Karen Schwarzkopf; Nicolai Oetter; Fanuel Mehari; Eric Eschner; Florian Klämpfl; Florian Stelzle; Marco Kesting; Zeev Zalevsky; Michael Schmidt

doi:10.1117/12.2526578

19 July 2019 Acoustic differentiation of dental soft and hard tissues using remote speckle-analysis during Er:YAG ablation

Benjamin Lengenfelder, Karen Schwarzkopf, Nicolai Oetter, Fanuel Mehari, Eric Eschner, Florian Klämpfl, Florian Stelzle, Marco Kesting, Zeev Zalevsky, Michael Schmidt

Author Affiliations +

Proceedings Volume 11077, Opto-Acoustic Methods and Applications in Biophotonics IV; 110771L (2019) https://doi.org/10.1117/12.2526578
Event: European Conferences on Biomedical Optics, 2019, Munich, Germany

Abstract

The Er:YAG laser has gained significant interest in the field of oral surgery due to its high water absorptivity, precision and patient acceptance. However, its application is limited by the lack of a contact-free feedback system which would enable safe laser guidance. In this work, a potential new, robust feedback modality based on speckle-analysis is presented which detects the acoustic signals produced during laser surgery. Oral soft- and hard tissue samples are investigated ex-vivo for its differentiation capability using the speckle modality. This technique might help to broaden the clinical application of Er:YAG lasers.

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Benjamin Lengenfelder, Karen Schwarzkopf, Nicolai Oetter, Fanuel Mehari, Eric Eschner, Florian Klämpfl, Florian Stelzle, Marco Kesting, Zeev Zalevsky, and Michael Schmidt "Acoustic differentiation of dental soft and hard tissues using remote speckle-analysis during Er:YAG ablation", Proc. SPIE 11077, Opto-Acoustic Methods and Applications in Biophotonics IV, 110771L (19 July 2019); https://doi.org/10.1117/12.2526578

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KEYWORDS

Tissues

Er:YAG lasers

Laser ablation

Speckle

Acoustics

Laser dentistry

Laser therapeutics

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