title: Effect of resin composite adhesion on marginal degradation.
abstract: Inappropriate bonding treatment tends to result in marginal fractures or microleakage caused by masticatory loading. The purpose of this study was to investigate the effect of adhesion of resin composites on marginal degradation. Five posterior resin composites were inserted into Class I preparations with and without etching or bonding treatment. These restored teeth were subjected to a three-body wear test for 400,000 cycles, and the exposed enamel height at the tooth/restoration interface was determined by profilometer and scanning electron micrography (SEM). It was found that use of appropriate etching and bonding agents reduced the exposed enamel height and maintained marginal integrity after repeated loading.
authors.affiliation: Department of Operative Dentistry, Osaka University, Faculty of Dentistry, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Kawai
authors.forename: K F
authors.initials: KF
authors.lastname: Leinfelder
mesh_terms: D000134:Acid Etching, Dental; D000180:Acrylic Resins; D000704:Analysis of Variance; D003188:Composite Resins / Q000737:chemistry; D001840:Dental Bonding; D003763:Dental Leakage; D018772:Dental Marginal Adaptation; D019554:Dental Restoration Wear; D003793:Dental Restoration, Permanent / Q000379:methods; D017220:Dentin-Bonding Agents; D006801:Humans; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D011140:Polyurethanes; D019279:Resin Cements; D013499:Surface Properties; D014520:Urethane
chemical_list: D000180:Acrylic Resins; C029012:Composite Dental Resin; D003188:Composite Resins; D017220:Dentin-Bonding Agents; D011140:Polyurethanes; D019279:Resin Cements; C056413:Occlusin; C065770:Herculite XR; C073466:Prisma APH; C048711:P-30 composite resin; D014520:Urethane