Influence of Ozone Gas and Ozonated Water Application to Dentin and Bonded Interfaces on Resin-Dentin Bond Strength

Autor(es)

Garcia, Eugenio Jose ^[1] ; Mena Serrano, Alexandra Patricia ^[2] ; Urruchi, Wilfredo Irrazabal ; Deboni, Maria Cristina ^[3] ; Reis, Alessandra ^[2] ; Miranda Grande, Rosa Helena ^[1] ; Loguercio, Alessandro Dourado ^[2]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Sch Dent, Dept Dent Mat, BR-05508 Sao Paulo - Brazil

^[2] Univ Estadual Ponta Grossa, Sch Dent, Dept Restorat Dent, BR-84030900 Ponta Grossa, Parana - Brazil

^[3] Univ Sao Paulo, Sch Dent, Dept Oral & Maxillofacial Surg, BR-05508 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Adhesive Dentistry; v. 14, n. 4, p. 363-370, AUG 2012.
• Citações Web of Science: 3

Resumo

Purpose: To assess the influence of ozone gas and ozonated water application to prepared cavity and bonded interfaces on the resin/dentin bond strength of two-step etch-and-rinse adhesive systems (Adper Single Bond 2 {[}SB2] and XP-Bond {[}XP]). Materials and Methods: Sixty extracted human third molars were sectioned perpendicularly to their long axes to expose flat occlusal dentin surfaces. In experiment 1, dentin was treated with ozone before the bonding procedure, while in experiment 2, ozone was applied to resin/dentin bonded interfaces. In experiment 1, dentin surfaces were treated either with ozone gas (2100 ppm), ozonated water (3.5 ppm), or distilled water for 120 s, and then bonded with SB2 or XP according to manufacturers' instructions. Hybrid composite buildups were incrementally constructed and the teeth were sectioned into resin-dentin sticks (0.8 mm(2)). In experiment 2, dentin surfaces were first bonded with SB2 or XP, composite buildups were constructed, and bonded sticks obtained. The sticks were treated with ozone as previously described. Bonded sticks were tested under tensile stress at 1 mm/min. Silver nitrate impregnation along the resin/dentin interfaces was also evaluated under SEM. Results: Two-way ANOVA (adhesive and ozone treatment) detected no significant effect for the cross-product interaction and the main factors in the two experiments (p > 0.05), which was confirmed by the photomicrographs. Conclusion: Ozone gas and ozonated water used before the bonding procedure or on resin/dentin bonded interfaces have no deleterious effects on the bond strengths and interfaces. (AU)

• Processo FAPESP: 03/10416-8 - Estudo da longevidade da união de adesivos autocondicionantes aplicados ao esmalte de dentes permanentes: morfologia, fendas e resistência
• Beneficiário: Rosa Helena Miranda Grande
• Modalidade de apoio: Auxílio à Pesquisa - Regular