Bonding silica-containing CAD/CAM dental blocks to composite resin with universal adhesives
10.14815/kjdm.2024.51.1.63
- Author:
Chi-Yong PARK
1
;
Minjeong SHIN
;
Shin Hye CHUNG
;
Young-Seok PARK
;
Bum-Soon LIM
Author Information
1. Department of Dental Biomaterials Science, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Republic of Korea
- Publication Type:Original Article
- From:
Korean Journal of Dental Materials
2024;51(1):63-84
- CountryRepublic of Korea
- Language:EN
-
Abstract:
The bond strength to the silicate-based CAD/CAM blocks may be affected by the composition and microstructure of the silicatebased blocks, surface treatment, and the properties of the applied adhesive. In this study, the shear bond strength to the silicate blocks with various universal adhesives after sandblasting or HF-treatment was measured, and the effects of the additional silane application after surface treatments are evaluated. Six silica-containing blocks and five universal adhesives currently used in dental clinics were selected. After polishing the silicate block surface, the specimens were divided into two groups. The first groups were HF-treated and the second groups were sandblasted with alumina, and the surface roughness, contact angle, and microstructure were analyzed by CLSM (Confocal Laser Scanning Microscope), contact angle analyzer, and FE-SEM (Field Emission Scanning Electron Microscope).Composite resin (2 mm diameter) was bonded with universal adhesive to silicate blocks and stored in a 37 ℃ water bath for 24 hours, and the shear bond strength was measured using a universal testing machine. The measured values were statistically analyzed using the Tukey-multiple comparison test (α=0.05). For hybrid composite ceramics, there was no significant difference in bond strength between sandblasting or HF-treatment, and additional silane application may not be necessary when bonding with a universal adhesive, whereas for leucite-reinforced and lithium disilicate glass-ceramics, HF-treatment may be more favorable for adhesion than sandblasting, and additional silane application appears to be necessary even when applying a universal adhesive.
