New picosecond laser emitting blue light for use in periodontology

Thomas Hennig; Elmar Nieswand; Peter Rechmann D.D.S.

doi:10.1117/12.424514

27 April 2001 New picosecond laser emitting blue light for use in periodontology

Thomas Hennig, Elmar Nieswand, Peter Rechmann D.D.S.

Proceedings Volume 4249, Lasers in Dentistry VII; (2001) https://doi.org/10.1117/12.424514
Event: BiOS 2001 The International Symposium on Biomedical Optics, 2001, San Jose, CA, United States

Abstract

Aim of the study was to investigate the impact of a new picosecond laser emitting blue light on tooth surfaces in order to remove calculus. The radiation may be comfortably transmitted via 25 micrometers diameter fiber optics. The resulting fluence at the tooth was found to be to low for ablation of calculus via nonlinear effects. Higher absorption of the 446 nm radiation by calculus compared to heathy tissues can provide preferential heating and evaporation of the calculus. The surface of thick calculus is irregular rough thus comprising a large interface to the surrounding cooling medium contra acting the preferential heating. In summary the study indicates the possibility flat layers of calculus by thermal effects. Carbonization in healthy tissues is the major problem concerning removal of subgingival calculus with thermal effects.

Citation Download Citation

Thomas Hennig, Elmar Nieswand, and Peter Rechmann D.D.S. "New picosecond laser emitting blue light for use in periodontology", Proc. SPIE 4249, Lasers in Dentistry VII, (27 April 2001); https://doi.org/10.1117/12.424514

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