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Proceedings Paper

Er:YAG laser cavity profile affected by an FCP silver hollow glass waveguide delivery system
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Paper Abstract

The evaluation of a cavity profile prepared in hard tissue by the radiation of Er:YAG dental laser with either a fluorocarbon polymer-coated silver hollow glass waveguide or an articulated arm as a delivery system is the objective of present study. Shape of holes in the enamel, dentin and ivory were studied for different energy (from 70 mJ to 450 mJ/pulse) and number of pulses (from 1 to 10). Scanning electron microscopy, photographs and X-ray microtomography were used for analysis of results. Differences between contact and non- contact preparation were studied. As the results it was found that the shape of cavity made by the waveguide delivery system is wider and flatter in comparison with the cavities prepared with the help of mirror arm. Bottom surface of the cavity has a smooth relief, edge of cavity is sharply determined. With the contact preparation the hole could be made with better precision and with comparatively smaller value of energy.

Paper Details

Date Published: 4 February 1999
PDF: 10 pages
Proc. SPIE 3564, Medical Applications of Lasers in Dermatology, Cardiology, Ophthalmology, and Dentistry II, (4 February 1999); doi: 10.1117/12.339154
Show Author Affiliations
Helena Jelinkova, Czech Technical Univ. (Czech Republic)
Tatjana Dostalova, Institute of Dental Research (Czech Republic)
Mitsunobu Miyagi, Tohoku Univ. (Japan)
You Wang, Tohoku Univ. (Japan)
Yi-Wei Shi, Tohoku Univ. (Japan)

Published in SPIE Proceedings Vol. 3564:
Medical Applications of Lasers in Dermatology, Cardiology, Ophthalmology, and Dentistry II
Gregory B. Altshuler; Stefan Andersson-Engels; Reginald Birngruber; Peter Bjerring; Adolf Friedrich Fercher; Herbert J. Geschwind; Raimund Hibst; Herbert Hoenigsmann; Frederic Laffitte; Hericus J. C. M. Sterenborg, Editor(s)

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