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Proceedings Paper

Comparative study between Fortify and Nd:YAG laser used for marginal sealing in composite restorations
Author(s): Ricardo Scarparo Navarro; Grazia Viviam Esteves; Wilson Tavares Oliveira; Adriana B. Matos; Mirian Lacalle Turbino; Michel Nicolau Youssef; Edmir Matson
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Paper Abstract

The aim of this study was to evaluate microleakage of composite restorations submitted to marginal treatment. Class V preparations with walls located in enamel were performed at buccal and lingual surfaces of eighteen recently extracted, non-carious human premolars. Cavities were restored with composite resins and adhesive system. Samples were stored in distilled water for 48h and polished with Sof-Lex discs. Teeth were randomly divide in six groups: G1 - Control; G2 - marginal treatment with surface sealant; G3 - Nd:YAG 25 Hz, 80mJ, 2W; G4 - Nd:YAG 20Hz, 100mJ, 2W; G5 - Nd:YAG 30Hz, 60mJ, 1.8W; G6 - Nd:YAG 30Hz, 40mJ, 1.2W. Contact fiberoptic (300μm) pulsed (1.064 μm) Nd:YAG laser was used for 30sec, under air cooling. Teeth were impermeabilized, immersed in a dye (Rhodamine B) for 4h at 37°, and sectioned. Specimens were evaluated under light microscopy and evaluated with scores. Results were analyzed with Kruskal- Wallis test (p=0.05) and showed that there were significant differences between marginal treatments; there were no significant differences beaten groups 1, 2, 4 and 3, 5, 6; lower values of microleakage were at groups 3, 5, 6. Nd:YAG laser showed marginal sealing ability and decreased microleakage of composite resins restorations.

Paper Details

Date Published: 19 May 1999
PDF: 4 pages
Proc. SPIE 3593, Lasers in Dentistry V, (19 May 1999); doi: 10.1117/12.348338
Show Author Affiliations
Ricardo Scarparo Navarro, Univ. of Sao Paulo School of Dentistry (Brazil)
Grazia Viviam Esteves, Univ. of Sao Paulo School of Dentistry (Brazil)
Wilson Tavares Oliveira, Univ. of Sao Paulo School of Dentistry (Brazil)
Adriana B. Matos, Univ. of Sao Paulo School of Dentistry (Brazil)
Mirian Lacalle Turbino, Univ. of Sao Paulo School of Dentistry (Brazil)
Michel Nicolau Youssef, Univ. of Sao Paulo School of Dentistry (Brazil)
Edmir Matson, Univ. of Sao Paulo School of Dentistry (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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