Er:YAG removal of subgingival calculi: efficiency, temperature, and surface quality

Karl Stock; Raimund Hibst; Ulrich Keller D.D.S.

doi:10.1117/12.260665

3 December 1996 Er:YAG removal of subgingival calculi: efficiency, temperature, and surface quality

Karl Stock, Raimund Hibst, Ulrich Keller D.D.S.

Proceedings Volume 2922, Laser Applications in Medicine and Dentistry; (1996) https://doi.org/10.1117/12.260665
Event: BiOS Europe '96, 1996, Vienna, Austria

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.

Citation Download Citation

Karl Stock, Raimund Hibst, and Ulrich Keller D.D.S. "Er:YAG removal of subgingival calculi: efficiency, temperature, and surface quality", Proc. SPIE 2922, Laser Applications in Medicine and Dentistry, (3 December 1996); https://doi.org/10.1117/12.260665

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