Influence of roughening procedures and priming agents on shear bond strength of CAD/CAM materials to zirconia frameworks.

Futoshi Komine, Fumiaki Kimura, Kei Kubochi, Ryoki Takano, Daishi Nakase, Hideo Matsumura

Dental materials journal 2021 May 29

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This study investigated the influence of roughening procedures and application of primers on shear bond strengths of CAD/CAM composite resin material or ceramic material to zirconia frameworks. A CAD/CAM composite resin block (Katana Avencia Block; AVE) and lithium disilicate glass-ceramic block (IPS e.max CAD; IEC) were used as veneer materials. The veneers were divided into three surface treatment groups; HF, hydrofluoric acid etching; AB, airborne-particle abrasion; and CON, no surface treatment. Each veneer was primed with four agents: Clearfil Porcelain Bond Activator (ACT), Clearfil Photo Bond (CPB), Clearfil Photo Bond with Porcelain Bond Activator (CPB+ACT), and no priming (UP). The zirconia frameworks and AVE or IEC veneers were resin-bonded. In the AVE specimen, AB treatment showed significantly higher shear bond strength than the other treatments at 0 and 20,000 thermocycles, except for UP and CPB+ACT groups at 20,000 thermocycles. Airborne-particle abrasion is necessary for resin bonding to Avencia blocks.

Citation

Futoshi Komine, Fumiaki Kimura, Kei Kubochi, Ryoki Takano, Daishi Nakase, Hideo Matsumura. Influence of roughening procedures and priming agents on shear bond strength of CAD/CAM materials to zirconia frameworks. Dental materials journal. 2021 May 29;40(3):664-673