The effect of different grinding types on metal-ceramic adhesion

The strong bond strength (SBS) between metal and ceramic is crucial to the success and longevity of metal-ceramic restorations. Therefore, this study aimed to determine the SBS between ceramic and cobalt-chromium (Co-Cr) alloys produced by different methods, treated with sandblasting, and four diffe...

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Bibliographic Details
Published in:Journal of adhesion science and technology 2022-08, Vol.36 (15), p.1693-1706
Main Author: Kara, Recep
Format: Article
Language:English
Subjects:
Aluminum oxide
Bonding strength
Ceramic bonding
Ceramics
Cermets
Chromium
chromium-cobalt alloys
Cobalt base alloys
Comminution
Diamonds
Grinding
Laser sintering
Metal surfaces
metal-ceramic alloy
metal-ceramic restorations
Samples
Sandblasting
Shear strength
Statistical analysis
Subgroups
Surface preparation
Surface properties
Surface treatment
Variance analysis
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Summary:The strong bond strength (SBS) between metal and ceramic is crucial to the success and longevity of metal-ceramic restorations. Therefore, this study aimed to determine the SBS between ceramic and cobalt-chromium (Co-Cr) alloys produced by different methods, treated with sandblasting, and four different grinding procedures. A total of one hundred and fifty Co-Cr samples were produced, including fifty samples from each group using casting, laser sintering, and milling techniques. The produced samples were divided into five subgroups according to their main groups. The sample groups were ground in one direction with a sintered diamond bur, carbide bur, pink stone, carbon separating disc, and the other group was sandblasted with 110 μm Al 2 O 3 . After surface treatments, an SBS test was performed, and the data were analyzed by one-way statistical analysis of variance (ANOVA) and Tukey HSD comparison test (p > .05). Surface characterizations of Co-Cr alloys were also examined with digital microscopy after debonding. There was a statistical difference between the laser sintering and milling groups compared to the fabrication techniques. While the highest SBS value was determined in milling groups (16.85 ± 2.63) with Al 2 O 3 sandblasting, the lowest was found in the casting group (8.97 ± 3.35) with Al 2 O 3 sandblasting. The use of abrasive burs with different surface properties and sandblasting used in metal leveling and finishing surface preparation significantly changes the ceramic's adhesion to the metal surface.
ISSN:0169-4243
1568-5616
DOI:10.1080/01694243.2021.1982236