title: One-year clinical evaluation of different types of bulk-fill composites.
abstract: OBJECTIVE
  In the present study, we evaluated the 1-year clinical performance of a conventional posterior composite resin and three bulk-fill composite resins.
  
  
  METHODS
  Fifty patients with four class II restorations under occlusion were enrolled in the present study. A total of 200 restorations were placed in the cavity, 50 for each material (Clearfil Photo Posterior, Filtek Bulk-Fill Flowable and Filtek P60, Tetric EvoCeram Bulk-Fill, and SonicFill). One operator placed the restorations in the cavity, and 1 week later the patients were called for baseline examination. Two calibrated examiners evaluated the restorations once every 3 months for 1 year, according to United States Public Health Service criteria. The data were analyzed using SPSS. Non-parametric tests (Kruskal-Wallis, Mann-Whitney U-test, and Friedman) were used for the analysis at a confidence level of 95%.
  
  
  RESULTS
  The 1-year recall rate was 86%. All restorations showed minor modifications after 1 year. However, no statistically-significant differences were detected between the materials' performance at baseline and after 1 year for all criteria (P > 0.05).
  
  
  CONCLUSIONS
  The bulk-fill composite resin materials showed similar clinical performance when compared with a conventional posterior composite resin. Further evaluations are necessary for the long-term clinical performance of these materials.
authors.affiliation: Department of Restorative Dentistry, Faculty of Dentisty, Kırıkkale University, Kırıkkale, Turkey.
authors.forename: Yusuf
authors.initials: Y
authors.lastname: Bayraktar
authors.affiliation: Department of Restorative Dentistry, Faculty of Dentisty, Kırıkkale University, Kırıkkale, Turkey.
authors.forename: Ertuğrul
authors.initials: E
authors.lastname: Ercan
authors.affiliation: Department of Restorative Dentistry, Faculty of Dentisty, Kırıkkale University, Kırıkkale, Turkey.
authors.forename: Mehmet Mustafa
authors.initials: MM
authors.lastname: Hamidi
authors.affiliation: Department of Restorative Dentistry, Faculty of Dentisty, Zirve University, Gaziantep, Turkey.
authors.forename: Hakan
authors.initials: H
authors.lastname: Çolak
mesh_terms: D000293:Adolescent; D000328:Adult; D003188:Composite Resins; D003731:Dental Caries / Q000628:therapy*; D003764:Dental Materials; D003793:Dental Restoration, Permanent; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008963:Molar; D011861:Radiography, Dental; D018709:Statistics, Nonparametric; D055815:Young Adult
chemical_list: D003188:Composite Resins; D003764:Dental Materials; C000614713:Filtek Bulk Fill; C438835:Filtek P60 Composite Resin; C000613185:SonicFill; C501891:Tetric EvoCeram; C092420:Clearfil Photo Posterior
keywords: bulk-fill composite; class II restoration; clinical evaluation; clinical performance; posterior composite