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Proceedings Paper

Removal of dental filling materials by Er:YAG laser radiation
Author(s): Raimund Hibst; Ulrich Keller
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Paper Abstract

In previous reports it could be shown that pulsed Er:YAG laser radiation is effective for the removal of dental enamel, dentin, and caries. Damage to the adjacent hard substances is minimal. Temperature measurements and animal studies revealed that thermal pulp damage can be avoided. The experimental results make the Er:YAG laser promising for the preparation of dental cavities. In many cases patients already have fillings which have to be removed. In the present work, investigation is made of the effect of Er:YAG laser radiation on various restorative filling materials. The experiments demonstrate that removal is possible for all tested cements, composites and amalgam. Ablation efficiency is comparable to that of enamel and dentin, and thus sufficient for practical applications. Morphology of crater walls indicates greater thermal side effects than for natural dental hard substances.

Paper Details

Date Published: 1 May 1991
PDF: 7 pages
Proc. SPIE 1424, Lasers in Orthopedic, Dental, and Veterinary Medicine, (1 May 1991); doi: 10.1117/12.43998
Show Author Affiliations
Raimund Hibst, Institut fuer Lasertechnologien in der Medizin (Germany)
Ulrich Keller, Univ. Ulm (Germany)

Published in SPIE Proceedings Vol. 1424:
Lasers in Orthopedic, Dental, and Veterinary Medicine
Stephen J. O'Brien; Douglas N. Dederich; Harvey Wigdor; Ava Micky Trent, Editor(s)

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