Shear resistance of composite resin to enamel using color-modifying resins and variously applied unfilled bonding resins.
The effects of bond layer thickness of color-modifying resins and variously applied unfilled resins on composite resin/enamel shear bond strengths were compared. Composite resin columns were bonded to etched enamel surfaces in vitro with either applied unfilled resins or with filled color-modifying resins. The bond layer thickness and the force required to shear the 17 specimens of each of six groups were measured. ANOVA with Tukey's test was performed to determine if significant differences at the alpha = 0.05 level existed for the mean bond layer thicknesses as well as the mean forces required to debond the specimens of six groups. Color-modifying resins resulted in a 5 to 327 times greater bond thickness than the unfilled resins. Only one of the unfilled resin groups showed a statistically significant difference in shear resistance compared with a color-modifying resin group. The method of application and resulting thickness of unfilled resin appeared to have little effect on composite resin/enamel shear bond strengths.
Pagniano
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Section of Restorative and Prosthetic Dentistry, Ohio State University, College of Dentistry, Columbus.
Longenecker
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D000179:Acrylates / Q000737:chemistry; D000269:Adhesives / Q000737:chemistry; D000704:Analysis of Variance; D003116:Color; D003188:Composite Resins / Q000737:chemistry; D001840:Dental Bonding; D003738:Dental Cements / Q000737:chemistry; D003743:Dental Enamel; D003799:Dental Stress Analysis; D017220:Dentin-Bonding Agents; D006801:Humans; D007180:Incisor; D008422:Materials Testing / Q000295:instrumentation; D019279:Resin Cements; D012117:Resins, Synthetic / Q000737:chemistry; D013718:Tensile Strength
D000179:Acrylates; D000269:Adhesives; D003188:Composite Resins; D003738:Dental Cements; D017220:Dentin-Bonding Agents; D019279:Resin Cements; D012117:Resins, Synthetic; C062652:Prisma Universal Bond; C062704:Prisma Bond; C036885:prisma-fil; C040415:heliobond