AI Article Synopsis
- - This study examined how different surface roughening techniques and primer applications affect the strength of bonds between CAD/CAM composite resin or ceramic materials and zirconia frameworks.
- - Two types of veneer materials were tested: a composite resin (Katana Avencia Block) and a ceramic (IPS e.max CAD), which were grouped into three surface treatment categories: HF (hydrofluoric acid), AB (airborne-particle abrasion), and CON (no treatment).
- - Results showed that airborne-particle abrasion significantly increased bond strength for the composite resin at both testing intervals, indicating its importance for effective resin bonding.
Article Abstract
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.
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| http://dx.doi.org/10.4012/dmj.2020-175 | DOI Listing |
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