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Proceedings Paper

Er:YAG laser for endodontics: efficiency and safety
Author(s): Raimund Hibst; Karl Stock; Robert Gall; Ulrich Keller
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Paper Abstract

Recently it has been shown that bacterias can be sterilized by Er:YAG laser irradiation. By optical fiber transmission the bactericidal effect can also be used in endodontics. In order to explore potential laser parameters, we further investigated sterilization of caries and measured temperatures in models simulating endodontic treatment. It was found out that the bactericidal effect is cumulative, with single pulses being active. This offers to choose all laser parameters except pulse energy (radiant exposure) from technical, practical or safety considerations. For clinical studies the following parameter set is proposed for efficient and safe application (teeth with a root wall thickness > 1 mm, and prepared up to ISO 50): pulse energy: 50 mJ, repetition rate: 15 Hz, fiber withdrawal velocity: 2 mm/s. With these settings 4 passes must be performed to accumulate the total dose for sterilization.

Paper Details

Date Published: 22 December 1997
PDF: 8 pages
Proc. SPIE 3192, Medical Applications of Lasers in Dermatology, Ophthalmology, Dentistry, and Endoscopy, (22 December 1997); doi: 10.1117/12.297860
Show Author Affiliations
Raimund Hibst, Institut fuer Lasertechnologien in der Medizin und Messtechnik an der Univ. Ulm (Germany)
Karl Stock, Institut fuer Lasertechnologien in der Medizin und Messtechnik an der Univ. Ulm (Germany)
Robert Gall, Institut fuer Lasertechnologien in der Medizin und Messtechnik an der Univ. Ulm (Germany)
Ulrich Keller, Univ. Ulm Dental School (Germany)


Published in SPIE Proceedings Vol. 3192:
Medical Applications of Lasers in Dermatology, Ophthalmology, Dentistry, and Endoscopy
Gregory B. Altshuler; Reginald Birngruber; Marco Dal Fante; Raimund Hibst; Herbert Hoenigsmann; Neville Krasner; Frederic Laffitte, Editor(s)

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