Effect of Methods of Biosilicate Microparticle Application on Dentin Adhesion

Autor(es)

Chinelatti, Michelle Alexandra ; Santos, Egle Leitao ; Tirapelli, Camila ; Panzeri Pires-de-Souza, Fernanda Carvalho

• Tipo de documento: Artigo Científico
• Fonte: DENTISTRY JOURNAL; v. 7, n. 2, p. 8-pg., 2019-06-01.

Resumo

Restorative procedures associated with bioglasses have shown to be a strategy to satisfy the contemporary concept of minimally invasive dentistry. Thus, the aim of this study was to evaluate bond strength to dentin treated by two different methods of biosilicate microparticle application. Dentin surfaces from 30 sound human molars were exposed and randomly assigned into three groups (n = 10) according to the surface treatment: (1) blasting with biosilicate microparticles (distance = 1 cm/pressure = 5 bar/time = 1 min); (2) 10% biosilicate microparticles paste; and (3) control (no treatment). After, dentin surfaces were restored with self-etch adhesive (Adper Easy Bond) and nanofilled composite (Filtek Z350). Specimens were sectioned perpendicularly to the adhesive interface to obtain sticks (cross-section area = 1 mm(2)), which were submitted to microtensile test (0.5 mm/min; 50 kgf). Data were analyzed by ANOVA and Tukey's test (alpha = 5%). Dentin/adhesive interfaces were morphologically analyzed by scanning electron microscopy (SEM). Data analysis showed that biosilicate-treated groups reached similar results (p > 0.05) and both of them demonstrated higher values (p < 0.05) than control group. SEM micrographs revealed hybridization with clear resin tags and no separation between resin-dentin adhesive interfaces. Within the limitations of this study, surface treatment with biosilicate positively influenced the adhesion to dentin and does not alter the morphology of the adhesive interface. (AU)

• Processo FAPESP: 13/04321-6 - Adesão à superfície dentinária jateada com micropartículas de Biosilicato®: estudo in vitro por microtração
• Beneficiário: Egle Leitão dos Santos
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 11/12160-7 - Efeito da aplicação de uma vitrocerâmica bioativa no controle de lesões de erosão em esmalte e dentina radicular
• Beneficiário: Michelle Alexandra Chinelatti
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado