title: Retention and marginal adaptation of a compomer placed in non-stress-bearing areas used with the total-etch technique: a 3-year retrospective study.
abstract: The aim of this clinical study was to evaluate class V and class III cavities restored with a polyacid-modified resin composite (compomer) restorative material in association with two different dentin-enamel bonding systems: Dyract-PSA (Primer Sealer Adhesive-DentSply, Germany) and Prime & Bond 2.0 (DentSply, Germany). The control group was a hybrid composite used with ProBond bonding system (DentSply, Germany). A total of 116 restorations (79 class V, 37 class III) were made and reevaluated after 1, 2 and 3 years in 55 patients in two private practices and in a university department. Class V nonretentive cavities were located at the CEJ level and class III at interproximal level close to CEJ. Each cavity was prepared using a water-cooled, high-speed handpiece with a fine diamond burr. A small bevel was prepared along enamel margin. Cavity dimensions were no more than 3.5 x 3.5 mm (using burr as reference point). Each restoration was finished immediately with fine diamond burrs and Sof-Lex disks (3 M, USA). The criteria that were evaluated by the USPHS method included: retention, color match, marginal integrity, marginal discoloration, and secondary caries. Results indicated that all compomer restorations were fully retained at 3 years, and that no secondary caries detected. Seven composite restorations were lost during the 3-year study. No statistical differences were observed between class III and class V or among other conditions (e.g., upper-lower arc, sex, age). This study demonstrates that compomers are suitable restorative materials for class III-V restorations. They may represent a clinical alternative to composites in class V and III restorations.
authors.affiliation: School of Dentistry, University of Bologna, Department of Emergency and Operative Dentistry, Italy.
authors.forename: C
authors.initials: C
authors.lastname: Prati
authors.forename: S
authors.initials: S
authors.lastname: Chersoni
authors.forename: L
authors.initials: L
authors.lastname: Cretti
authors.forename: G
authors.initials: G
authors.lastname: Montanari
mesh_terms: D000328:Adult; D000368:Aged; D017438:Bisphenol A-Glycidyl Methacrylate; D016009:Chi-Square Distribution; D003116:Color; D020770:Compomers; D003188:Composite Resins; D003737:Dental Cavity Preparation / Q000379:methods; D018772:Dental Marginal Adaptation; D017268:Dental Prosthesis Retention; D019232:Dental Restoration Failure; D003793:Dental Restoration, Permanent / Q000379:methods*; D017220:Dentin-Bonding Agents; D005260:Female; D005899:Glass Ionomer Cements / Q000737:chemistry; D006801:Humans; D008297:Male; D008689:Methacrylates; D008875:Middle Aged; D011109:Polymethacrylic Acids; D012189:Retrospective Studies; D017640:Silicates
chemical_list: D020770:Compomers; D003188:Composite Resins; D017220:Dentin-Bonding Agents; C088486:Dyract; D005899:Glass Ionomer Cements; D008689:Methacrylates; D011109:Polymethacrylic Acids; C103500:Prime & Bond; D017640:Silicates; C062652:Prisma Universal Bond; D017438:Bisphenol A-Glycidyl Methacrylate