Abstract
Shear adhesive strength (after 24 hours water immersion period) of dental adhesivecements to dental porcelains were investigated. As adhesives, Super-Bond C & B, Panavia-EXand HY-BOND Carbo Cement were used. As adherends, VITA VMK 68 opabue, VITA DUR-Ncore and Cerachrome-L were used. The surface treatments of porcelains were as follows.
1. Polishing by # 600 Emery paper, 2. Sand blasting by 50 μmφ glass beads, 3. Sand blastingby alumina powder which had 20-40 μm particle size.
The results were summarized as follows.
1. Super-Bond C B had excellent adhesion to any porcelain on any surface treatment.
The adhesive strength were 220-310 kgf/cm 2.2. Panavia-EX were influenced by surface treatment of porcelain. Sand blasting by aluminahad good effect on adhesion.
3. Panavia-EX had higher adhesion to aluminous porcelain than metal fusing porcelain.
4. HY-BOND Carbo Cement showed somewhat of adhesiveness to VITA VMK68 opaque.
The adhesive strength were about 100 kgf/cm2.
