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Proceedings Paper

Comparative diagnosis in the detection of decays involving conventional methods, laser, and digital x ray
Author(s): Rosane F. Z. Lizarelli; Janete Cinira Bregagnolo; Renata Zanirato Lizarelli; Juliana Maria Costa Palhares; Girlene Evangelista Prezzotto Villa; Vanderlei Salvador Bagnato
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Paper Abstract

Occlusal surface caries are very difficult to diagnose at early stages, special difficulties are observed when the lesion is formed bilaterally in the pits and fissures walls. Preventive measures have been a constant concerning in the attempt to reduce the installation and progression of incipient occlusal decays. The early carious lesions detection through conventional diagnosis methods are questionable because they can end up with a risk of a false-positive or false-negative diagnosis. Using 22 teeth in vitro, premolars and molars, which suggested carious lesions, the exams were made by 3 examiners calibrated through pre-determined scores. The utilized methods were: GI -- visual inspection, GII -- tactile inspection (explorer probe), GIII -- conventional radiographic exam, GIV -- digital radiographic exam (Digora for Windows 1.51 and 1.51N, Soredex-orion Co.), GV -- low intensity laser for diagnosis (DIAGNOdent, KaVo, Germany) and GVI -- histologic section. The examiners did not communicate among themselves during the exams. There were significant statistical difference among the evaluated methods. Under Friedman statistical test, GI, GIII and GIV were different from GV at the 0.1% level; when we have compared GII with GV, we observed statistical difference at the 1% level. In conclusion, GV was highly statistically different from the others groups, it means that the low intensity laser for diagnosis was the most sensible method to detect decayed tissue.

Paper Details

Date Published: 24 March 2000
PDF: 8 pages
Proc. SPIE 3910, Lasers in Dentistry VI, (24 March 2000); doi: 10.1117/12.380831
Show Author Affiliations
Rosane F. Z. Lizarelli, Univ. de Sao Paulo (Brazil)
Janete Cinira Bregagnolo, Univ. de Sao Paulo School of Dentistry (Brazil)
Renata Zanirato Lizarelli, Univ. de Ribeirao Preto School of Dentistry (Brazil)
Juliana Maria Costa Palhares, Univ. de Ribeirao Preto School of Dentistry (Brazil)
Girlene Evangelista Prezzotto Villa, Univ. de Ribeirao Preto School of Dentistry (Brazil)
Vanderlei Salvador Bagnato, Univ. de Sao Paulo (Brazil)


Published in SPIE Proceedings Vol. 3910:
Lasers in Dentistry VI
John D. B. Featherstone; Peter Rechmann; Daniel Fried, Editor(s)

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