title: Clinical evaluation of a nanofilled composite in posterior teeth: 12-month results.
abstract: This study compared the clinical performance of a nanofilled resin composite for posterior restorations with 2 microhybrid and 1 packable composite after 12 months of clinical service. Forty-two patients with at least 5 Class I or II restorations under occlusion were enrolled in this study. A total of 148 restorations were placed, 25% for each material (Filtek Supreme, Pyramid, Esthet-X or Tetric Ceram). Two calibrated operators placed all restorations, according to the manufacturers' instructions. One week later, the restorations were finished/polished. Two independent examiners evaluated the restorations at baseline and after 12 months according to the USPHS modified criteria. All patients attended the 12-month recall and 148 restorations were evaluated. Friedman repeated measures analysis of variance by rank and Wilcoxon sign-ranked test for pair-wise comparison was used for data analysis (alpha=0.05). All materials showed only minor modifications, and no differences were detected between their performance at baseline and after 12 months. After 1 year, the nanofilled resin composite showed similar performance to the other packable and microhybrid resin composites.
authors.affiliation: School of Dentistry, Department of Dental Materials and Operative Dentistry, University of Oeste de Santa Catarina, Campus Joaçaba/SC, Brazil.
authors.forename: Walmor
authors.initials: W
authors.lastname: Dresch
authors.forename: Sayonara
authors.initials: S
authors.lastname: Volpato
authors.forename: João Carlos
authors.initials: JC
authors.lastname: Gomes
authors.forename: Neila Rosane
authors.initials: NR
authors.lastname: Ribeiro
authors.forename: Alessandra
authors.initials: A
authors.lastname: Reis
authors.forename: Alessandro D
authors.initials: AD
authors.lastname: Loguercio
mesh_terms: D001641:Bicuspid; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D003116:Color; D003188:Composite Resins / Q000737:chemistry*; D001840:Dental Bonding; D018772:Dental Marginal Adaptation; D019232:Dental Restoration Failure; D003793:Dental Restoration, Permanent / Q000145:classification / Q000379:methods*; D017220:Dentin-Bonding Agents / Q000737:chemistry; D005500:Follow-Up Studies; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D008963:Molar; D049329:Nanostructures / Q000737:chemistry; D011109:Polymethacrylic Acids / Q000737:chemistry; D013499:Surface Properties
chemical_list: C103506:Bis-GMA, BPDM, HEMA dental-bonding resin; D003188:Composite Resins; D017220:Dentin-Bonding Agents; C466112:Esthet-X; C420130:Excite cement; C474035:Filtek Supreme; D008689:Methacrylates; D011109:Polymethacrylic Acids; C425843:Prime and Bond NT; C428803:Pyramid Packable Composite; C121818:Tetric ceram; C115612:single bond; D017438:Bisphenol A-Glycidyl Methacrylate