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Proceedings Paper

CO2 laser on apical seal of retrofilled teeth
Author(s): Carlos Eduardo Aun; Giulio Gavini; Naya Flaitt Clasen; Luciana Silva Kfouri
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Paper Abstract

The CO2 laser has been suggested for occlusion of dentinal tubuli and sterilization of the beveled root surfaces, avoiding degrees of irritants from the root canal system into periapical tissues. This study has evaluated marginal leakage in 40 human single rooted teeth divided into 4 groups of 8 teeth which received retrofillings, and 2 control groups of 4 teeth each. Group A: Super EBA; group B: Super EBA and CO2 laser irradiation; group C: Glass Ionomer Cement; group D: Glass ionomer Cement and laser; group E: positive control; group F: negative control. In groups B and D the power set was 2 watts, 20 msec, with a CT3105 ceramic point. Teeth were placed in 5 percent methylene blue dye for 24 hs and the dye penetration was lower in B. The higher penetration was seen in C. Analysis of variance found statistical difference between groups. In this study the laser irradiation was able to change the amount of dye penetration. It can be assumed that Super EBA and Glass Ionomer Cement have their sealing abilities improved by laser irradiation.

Paper Details

Date Published: 15 May 1997
PDF: 5 pages
Proc. SPIE 2973, Lasers in Dentistry III, (15 May 1997); doi: 10.1117/12.273585
Show Author Affiliations
Carlos Eduardo Aun, Univ. de Sao Paulo (Brazil) and Univ. Cidade de Sao Paulo (Brazil)
Giulio Gavini, Univ. de Sao Paulo (Brazil) and Univ. Cidade de Sao Paulo (Brazil)
Naya Flaitt Clasen, Univ. de Sao Paulo (Brazil) and Univ. Cidade de Sao Paulo (Brazil)
Luciana Silva Kfouri, Univ. de Sao Paulo (Brazil) and Univ. Cidade de Sao Paulo (Brazil)

Published in SPIE Proceedings Vol. 2973:
Lasers in Dentistry III
Harvey A. Wigdor; John D. B. Featherstone; Peter Rechmann, Editor(s)

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