Morphological analysis of the retrofilled apical dentin surfaces irradiated with CO2 laser

Carlos Eduardo Aun; Jose Luiz Lage-Marques; Giulio Gavini; Naya Flaitt Clasen; Koukichi Matsumoto

doi:10.1117/12.306028

22 April 1998 Morphological analysis of the retrofilled apical dentin surfaces irradiated with CO₂ laser

Carlos Eduardo Aun, Jose Luiz Lage-Marques, Giulio Gavini, Naya Flaitt Clasen, Koukichi Matsumoto

Proceedings Volume 3248, Lasers in Dentistry IV; (1998) https://doi.org/10.1117/12.306028
Event: BiOS '98 International Biomedical Optics Symposium, 1998, San Jose, CA, United States

Abstract

Countless researches conducted in these last years have compared the sealing capacity of various materials for retrofillings. Besides, the association of laser irradiation to traditional procedures inquires to increase the success of this kind of treatment. The purpose of this study was to evaluate the morphological changes on dentin surface and the junction between retrofilling material and apical cavity, with different materials irradiated or not with CO₂ laser, in scanning electron microscopy. The following materials were used: Group A yields Super EBA; group B yields Super EBA and CO₂ laser irradiation (Luxar System); group C yields Glass Ionomer Cement; group D yields Glass Ionomer Cement and CO₂ laser. In groups B and D the power set was 2 watts, 20 msec, with a CT3105 ceramic point, and the power density for the CO₂ laser application was 397,93 w/cm². The morphological analysis permitted to conclude that the dentin laser irradiation showed different and less intense superficial alteration when compared with retrofilling materials. In most cases, the alterations to the material surfaces showed cavities and craters. Group B presented more irregular and affected surfaces, creating blank spaces in the adjacent areas to the radicular dentinal surfaces after laser application, probably because of the carbonization.

Citation Download Citation

Carlos Eduardo Aun, Jose Luiz Lage-Marques, Giulio Gavini, Naya Flaitt Clasen, and Koukichi Matsumoto "Morphological analysis of the retrofilled apical dentin surfaces irradiated with CO₂ laser", Proc. SPIE 3248, Lasers in Dentistry IV, (22 April 1998); https://doi.org/10.1117/12.306028

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KEYWORDS

Carbon dioxide lasers

Cements

Scanning electron microscopy

Glasses

Morphological analysis

Teeth

Laser irradiation

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