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- Title
Digital veneering system enhances microtensile bond strength at zirconia core-veneer interface.
- Authors
Ki-Yeon KIM; Taek-Ka KWON; Tae-Joo KANG; Jae-Ho YANG; Shin-Jae LEE; In-Sung YEO
- Abstract
This study investigated the effect of digital veneering system (DVS) on strengthening the bond between a zirconia core and ceramic veneer. Specimens for Groups 1 (negative control), 2 (positive control), 3, and 4 used conventional porcelain veneering technique on untreated, sandblasted, coloring agent-treated, and modifier-treated zirconia cores respectively. Group 5 used DVS, where glass ceramic veneers--produced by computer-aided milling--were fused to zirconia cores. Microtensile bond strengths (MTBS) at the interface were measured. MTBS results of Groups 1 to 5, expressed in mean (standard deviation), were 28.1 (7.3), 27.8 (6.3), 30.0 (10.2), 32.9 (8.1), and 37.8 (8.1) MPa. The DVS group had significantly higher MTBS than the negative and positive controls (p<0.05). Results showed that DVS enhanced the bond strength between zirconia core and ceramic veneer, indicating that this system could reduce adhesive failure-related complications that frequently occur at the zirconia core-veneer interface.
- Subjects
TENSILE strength; DENTAL metallurgy; BOND strengths; ZIRCONIUM oxide; INTERFACES (Physical sciences)
- Publication
Dental Materials Journal, 2014, Vol 33, Issue 6, p792
- ISSN
0287-4547
- Publication type
Article
- DOI
10.4012/dmj.2014-168