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Proceedings Paper

New picosecond laser emitting blue light for use in periodontology
Author(s): Thomas Hennig; Elmar Nieswand; Peter Rechmann
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Paper 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.

Paper Details

Date Published: 27 April 2001
PDF: 8 pages
Proc. SPIE 4249, Lasers in Dentistry VII, (27 April 2001); doi: 10.1117/12.424514
Show Author Affiliations
Thomas Hennig, Heinrich-Heine-Univ. Duesseldorf (Germany)
Elmar Nieswand, Heinrich-Heine-Univ. Duesseldorf (Germany)
Peter Rechmann, Heinrich-Heine-Univ. Duesseldorf (United States)


Published in SPIE Proceedings Vol. 4249:
Lasers in Dentistry VII
Peter Rechmann; Daniel Fried; Thomas Hennig, Editor(s)

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