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Proceedings Paper

Bactericidal effect of Nd:YAG laser irradiation in endodontics
Author(s): Carlos Eduardo Aun; Alexandre Fonseca Barberini; Selma Christina Cury Camargo; Luciana Silva Kfouri; Maria Regina Lorenzetti Simionato
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Paper Abstract

The success of endodontic therapy is based on the elimination of bacterial colonization from the endodontic system and periapical tissues. Recent studies have been showing the bactericidal effect of laser in root canal treatment. The propose of the study is to evaluate the effect of Nd:YAG laser irradiation in contaminated root canal treatment. The propose of the study is to evaluate the effect of Nd:YAG laser irradiation in contaminated root canals from upper central incisor. For the experiment 12 teeth were selected, respect at the apical third, sterilized, and 10 μm Streptococcus sanguis liquid culture were inoculated in the root canals. The laser test groups were irradiated with Nd:YAG laser at standard setting of 15Hz, 100mj and 1,5 W for 10, 20 and 30 seconds each in slow helicoidal movements from the apex to the top using a 300 micrometers fiber. After the procedure the specimens were placed in Tryptic Soy Agar, the number of colony forming units was evaluated. The experiment showed a significant reduction on viability of Streptococcus sanguis at the respective time of 20 and 30 seconds.

Paper Details

Date Published: 19 May 1999
PDF: 5 pages
Proc. SPIE 3593, Lasers in Dentistry V, (19 May 1999); doi: 10.1117/12.348354
Show Author Affiliations
Carlos Eduardo Aun, Univ. de Sao Paulo School of Dentistry (Brazil)
Alexandre Fonseca Barberini, Univ. de Sao Paulo School of Dentistry (Brazil)
Selma Christina Cury Camargo, Univ. de Sao Paulo School of Dentistry (Brazil)
Luciana Silva Kfouri, Univ. de Sao Paulo School of Dentistry (Brazil)
Maria Regina Lorenzetti Simionato, Univ. de Sao Paulo School of Dentistry and Univ. Cidade de Sao Paulo (Brazil)


Published in SPIE Proceedings Vol. 3593:
Lasers in Dentistry V
John D. B. Featherstone; Peter Rechmann; Daniel Fried, Editor(s)

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