Comparison of Marginal Microleakage of Flowable Composite Restorations in Primary Molars Prepared by High-speed Carbide Bur, Er:YAG Laser, and Air Abrasion

Autor(es)

Borsatto, Maria Cristina ; Milori Corona, Silmara Aparecida ; Chinelatti, Michelle Alexandra ; Ramos, Renata Pereira ; Salvitti de Sa Rocha, Renata Andrea ; Pecora, Jesus Djalma ; Palma-Dibb, Regina Guenka

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF DENTISTRY FOR CHILDREN; v. 73, n. 2, p. 5-pg., 2006-05-01.

Resumo

Purpose: The purpose of this study was to assess in vitro the influence of 3 cavity preparation devices (carbide bur, Er:YAG laser, and air abrasion) on the microleakage of flowable composite restorations in primary teeth. Methods: Fifteen primary second molars were selected, and Class V cavities were prepared on the buccal/lingual surfaces, being assigned to 3 groups (n=10). Group 1 (control) was prepared using a high-speed handpiece and was acid etched. Group 2 was prepared and treated with a Er: YAG laser (400mJ/4Hz and 80mJ/4Hz, respectively) and was acid etched. Group 3 was prepared and treated with an air abrasion system and was acid etched. Cavities were restored and stored for 7 days. Restorations were polished, thermocycled, immersed in 0.2% rhodamine B, sectioned, and analyzed for leakage. Results: Er: YAG laser-prepared cavities showed the highest degree of infiltration. The performance of the air abrasion device was comparable to that of the high-speed handpiece. Conclusion: It may be concluded that the method of cavity preparation affected the microleakage of Class V cavities restored with flowable composite in primary teeth. (AU)

• Processo FAPESP: 01/05422-3 - Avaliacao in vitro da microinfiltracao marginal e da resistencia a tracao de sistemas restauradores a dentina. efeito da aplicacao do laser de er:yag e do jato de oxido de aluminio.
• Beneficiário: Silmara Aparecida Milori Corona
• Modalidade de apoio: Auxílio à Pesquisa - Regular