Root canal preparation with Er:YSGG laser

Hartmut Benthin; Thomas P. Ertl; B. Onal; Stephan Schruender; Gerhard J. Mueller

doi:10.1117/12.197598

23 December 1994 Root canal preparation with Er:YSGG laser

Hartmut Benthin, Thomas P. Ertl, B. Onal, Stephan Schruender, Gerhard J. Mueller

Proceedings Volume 2327, Medical Applications of Lasers II; (1994) https://doi.org/10.1117/12.197598
Event: International Symposium on Biomedical Optics Europe '94, 1994, Lille, France

Abstract

The high level of efficiency of hard tissue ablation with Er:YAG and Er:YSGG lasers is well known. Of these lasers it is possible only to transmit Er:YSGG laser radiation with OH reduced quartz fibers. Most of the fibers we use in this study were prepared as hemispherical fiber tips. Fifty single rooted teeth were divided into ten groups (n equals 5). After conventional opening of the pulp chamber, root canal preparation was performed in five groups under water only using the laser. In the other five groups preparation with K-files to size 35 was performed before treatment with laser radiation. All teeth were axially separated with direct access to the root canal and examined in SEM investigations. The groups were compared by measuring the areas with patent dentin tubules. Representative areas were examined by TEM. The temperature at the root surface was measured during laser irradiation with thermocouples positioned at several points. The in-vitro study of the effect of the high delivered energy (50 - 100 mJ per pulse) in the root canal showed a good ablation effect. Most of the dentin tubules were opened. The increase in temperature at the root surface was tolerable.

Citation Download Citation

Hartmut Benthin, Thomas P. Ertl, B. Onal, Stephan Schruender, and Gerhard J. Mueller "Root canal preparation with Er:YSGG laser", Proc. SPIE 2327, Medical Applications of Lasers II, (23 December 1994); https://doi.org/10.1117/12.197598

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