[A comprehensive analysis of multi-factors affecting bonding force about metal-resin bonded bridge].
The purpose of this study is to analyse 5 factors affecting the shear bonding force to cast metal-bonded bridge with orthogonal experiment. The bonding area has the most important effect on bonding force among these 5 factors. According to the result of this experiment, the best combination of these 5 factors on different levels was selected. It was formed by electrolytic etching directly after the bonding surface of metal retainer was abraded, preparation of the axial grooves in the edentulous proximal surfaces of abutments, drying with compressed air and drying agent after enamel was acid etched and washed, bonding area was about 49 mm2 in each retainer and without using opaque agent between bonding agent and resin. The maximum shear bonding force in this experiment was 40.25 kg which is higher than the normal occlusal force 22.5 kg. in upper central incisor, so that this combination is available in clinical restoration.
Wang
X Z
XZ
School of Stomatology, Beijing Medical University.
D000134:Acid Etching, Dental; D002858:Chromium Alloys; D001840:Dental Bonding; D016379:Denture, Partial, Fixed, Resin-Bonded; D006801:Humans; D066298:In Vitro Techniques
D002858:Chromium Alloys