Effect of immediate dentin sealing applications on bonding of CAD/CAM ceramic onlay restoration
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- MURATA Takuya
- Department of Adhesive Dentistry, School of Life Dentistry at Tokyo, The Nippon Dental University
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- MASEKI Toshio
- Department of Adhesive Dentistry, School of Life Dentistry at Tokyo, The Nippon Dental University
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- NARA Yoichiro
- Department of Adhesive Dentistry, School of Life Dentistry at Tokyo, The Nippon Dental University
Abstract
<p>The effects of immediate dentin sealing (IDS) applications on the bonding of computer-aided design/computer-aided manufacturing (CAD/CAM) ceramic onlay restorations after cyclic loading were examined. Standardized mesial-distal-occlusal-palatal cavities in 32 extracted human molars were prepared. The cavities were divided into four groups: those receiving thin-layered (T), slope-shaped (S), and base-shaped (B) sealing, and the non-sealing group (N) as a control. The intra-cavity dentin walls of the T, S, and B groups were sealed with an all-in-one adhesive and a flowable composite. All cavities were scanned; hence, CAD/CAM onlays were fabricated using ceramic blocks and bonded with a resin cement system. Cyclic loading was applied and the microtensile bond strength (μ-TBS) was measured. It was found that IDS application improved not only the μ-TBS, but also the bonding reliability and durability of the CAD/CAM restoration. In particular, the S restoration exhibited the highest-performance as regards both robust bond strength and stable bonding.</p>
Journal
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- Dental Materials Journal
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Dental Materials Journal 37 (6), 928-939, 2018-11-27
The Japanese Society for Dental Materials and Devices