Influence of the depth of intraradicular dentin on the pushout bond strength of resin materials

Autor(es)

Umeda Suzuki, Thais Yumi ^{[1, 2]} ; Gomes-Filho, Joao Eduardo ^[3] ; Fraga Briso, Andre Luiz ^[3] ; Assuncao, Wirley Goncalves ^[2] ; dos Santos, Paulo Henrique ^[2]

Afiliação do(s) autor(es)

^[1] Univ Fed Minas Gerais, Dept Restorat Dent, Belo Horizonte, MG - Brazil

^[2] UNESP, Dept Dent Mat & Prosthodont, Aracatuba, SP - Brazil

^[3] UNESP, Dept Restorat Dent, Aracatuba, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF INVESTIGATIVE AND CLINICAL DENTISTRY; v. 10, n. 4 NOV 2019.
• Citações Web of Science: 0

Resumo

Aim The aim of the present study was to evaluate the pushout bond strength between glass-fiber posts to different regions of intraradicular dentin with different materials for adhesive cementation. Methods After endodontic filling, 40 teeth were divided into five groups according to adhesive cementation: Adper Single Bond 2 + RelyX ARC, Excite DSC + RelyX ARC (EXC), Adper SE Plus + RelyX ARC (SEP), RelyX Unicem, and Set. After the bonding process, roots were sectioned obtaining slices to be analyzed from each third. The bond strength was measured using the pushout test in a universal testing machine (Emic DL 3000) at a cross-head speed of .5 mm/minutes in different areas of the post space (cervical, middle, and apical). Data were subjected to analysis of variance and Fisher's test (alpha = .05). Results The highest values for the pushout bond strength were found for the SEP group in all experimental conditions, without a significant difference for the EXC group in the middle and apical regions. There was a decrease in pushout bond strength in the cervical-apical direction for all groups, except the EXC group, which did not show a difference among the different regions. Conclusions The different interactions of the resin materials and the intraradicular depth influenced the bond strength of adhesives materials to dentin substrate. (AU)

• Processo FAPESP: 09/12730-8 - Análise da interface adesiva entre cimentos resinosos e diferentes terços da dentina intra-radicular
• Beneficiário: Thaís Yumi Umeda Suzuki
• Modalidade de apoio: Bolsas no Brasil - Mestrado