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Proceedings Paper

Er:YAG removal of subgingival calculi: efficiency, temperature, and surface quality
Author(s): Karl Stock; Raimund Hibst; Ulrich Keller
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Paper Abstract

Aim of this study was to evaluate a handpiece with a special fiber tip for Er:YAG laser removal of subgingival calculus. The morphological changes of the treated areas were observed by light microscopy and SEM. To evaluate the efficiency, the time for complete removal of the calculi was measured. The temperature development in the pulp during laser treatment was investigated by a thermocouple inserted into a root canal. After calculi ablation, only smooth ablation traces are visible. The depth of the ablation traces is about 100 micrometers . Roughness of the treated area is similar to the untreated area. The ablation efficiency depends strongly on the shape and location of the calculi and varies between 4.6 and 20 mm2/min. During non stop preparation the maximum occurred temperature in pulp was 7.8 K. The results show that the Er:YAG laser with the used fiber delivery systems and handpiece is suitable for effective and sparing removal of subgingival calculus in periodontal treatment.

Paper Details

Date Published: 3 December 1996
PDF: 9 pages
Proc. SPIE 2922, Laser Applications in Medicine and Dentistry, (3 December 1996); doi: 10.1117/12.260665
Show Author Affiliations
Karl Stock, Institut fuer Lasertechnologien in der Medizin und Messtechnik an der Univ. Ulm (Germany)
Raimund Hibst, Institut fuer Lasertechnologien in der Medizin und Messtechnik and der Univ. Ulm (Germany)
Ulrich Keller, Univ. Ulm Dental School (Germany)


Published in SPIE Proceedings Vol. 2922:
Laser Applications in Medicine and Dentistry
Gregory B. Altshuler; Fausto Chiesa; Herbert J. Geschwind; Raimund Hibst; Neville Krasner; Frederic Laffitte; Giulio Maira; Reinhard Neumann; Roberto Pini; Hans-Dieter Reidenbach; Andre Roggan; Montserrat Serra I Mila, Editor(s)

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