Bond strength between a polymer-infiltrated ceramic network and a composite for repair: effect of several ceramic surface treatments

• প্রধান লেখক: Pollyanna Nogueira Ferreira da Silva (Author), Carolina Machado Martinelli-Lobo (Author), Marco Antonio Bottino (Author), Renata Marques de Melo (Author), Luiz Felipe Valandro (Author)
• বিন্যাস: গ্রন্থ
• প্রকাশিত: Sociedade Brasileira de Pesquisa Odontológica, 2018-04-01T00:00:00Z.
• বিষয়গুলি: article
• অনলাইন ব্যবহার করুন: Connect to this object online.
• Notes: 1807-3107; 10.1590/1807-3107bor-2018.vol32.0028
• Keywords: Dental Ceramics; Adhesion; Conditioning; Ageing; Fracture; Dentistry; RK1-715
• Source: Brazilian Oral Research, Vol 32, Iss 0 (2018)

Abstract: The effects of several ceramic surface treatments on bond strength of a polymer-infiltrated ceramic network and resin composite as repair material were evaluated. CAD-CAM blocks of a polymer-infiltrated ceramic network (Vita Enamic) were sliced and subjected to aging process, followed by embedding in acrylic resin. The bonding/repair area was treated as follows (n = 30): C- without treatment; UA- universal adhesive application; FM- 10% hydrofluoric acid and silane application; OM-airborne-particle abrasion with aluminum oxide and silane application; RP- tribochemical silica coating; and CA- surface grinding and application of universal adhesive. Composite resin cylinders were made on the treated surface. Specimens from each group were assigned randomly to two subgroups (n = 15) considering storage condition: Baseline (shear tests after 48 hours) or Storage (tests after 6 months under distilled water). The treated surfaces were analyzed by goniometry, roughness, and SEM. Two-way ANOVA and 1-way ANOVA were applied to analyze the bond data and roughness / contact angle data, respectively, followed by Tukey's test (α = 5%). Surface treatments and storage conditions affected bond strengths (p < 0.01). Surface grinding (CA) followed by universal adhesive promoted the highest value of bond strength (14.5 ± 4.8 MPa for baseline, 8.5 ± 3.4 MPa for storage) and the roughest ceramic surface. Grinding with silicon carbide paper (simulating diamond bur) followed by the application of a universal adhesive system is the best option for repairing fractures of the polymer-infiltrated ceramic network.