title: Clinical performance of resin composite restorations after 2 years.
abstract: The objective of this study was to evaluate the clinical performance of a packable restorative material, after 2 years in stress-bearing posterior cavities, according to the Ryge criteria. At least two Class 2 restorations (occluso-mesial, mesial-occlusal-distal, occlusal-distal) were placed in 46 patients (36.7 +/- 16 years). In each of the restorations (lot 221, metal matrix band system, glass ionomer-cement-base in 53% of the cavities, mostly no rubber dam) an adhesive system was used. Additionally, in each patient a flowable composite was used in one of the two fillings. After 2 years, 70% of the patients were available for reevaluation. Two restorations needed to be replaced as a result of postoperative sensitivities within the observation period, and one tooth received root canal treatment. All other restored teeth remained vital. One restoration with marginal discoloration received a score of Charlie; another with secondary caries received a score of Bravo. All the others revealed excellent and clinically acceptable results. No statistically significant difference (Chi-square-test) was observed between the two groups, with and without an additional flowable composite. After 2 years, the restorative material performed clinically well, with no observable fractures in the restoration.
authors.affiliation: Department of Operative Dentistry, Johannes Gutenberg-University, Mainz, Germany.
authors.forename: Claus-Peter
authors.initials: CP
authors.lastname: Ernst
authors.forename: Christian
authors.initials: C
authors.lastname: Buhtz
authors.forename: Carla
authors.initials: C
authors.lastname: Rissing
authors.forename: Brita
authors.initials: B
authors.lastname: Willershausen
mesh_terms: D001641:Bicuspid; D016009:Chi-Square Distribution; D003188:Composite Resins; D003731:Dental Caries / Q000517:prevention & control; D003736:Dental Cavity Lining; D018772:Dental Marginal Adaptation; D019232:Dental Restoration Failure; D003793:Dental Restoration, Permanent / Q000379:methods*; D017220:Dentin-Bonding Agents; D004852:Epoxy Compounds; D005500:Follow-Up Studies; D006801:Humans; D008334:Mandible; D008689:Methacrylates; D008963:Molar; D055502:Secondary Prevention
chemical_list: D003188:Composite Resins; D017220:Dentin-Bonding Agents; D004852:Epoxy Compounds; D008689:Methacrylates; C407604:Solid Bond; C469658:Solitaire 2 composite resin; C111840:flowable hybrid composite