title: Evaluation of marginal integrity of four bulk-fill dental composite materials: in vitro study.
abstract: OBJECTIVE
  The aim of the study was to compare under in vitro conditions marginal sealing of 4 different bulk-fill materials composite restorations of class II.
  
  
  METHODS
  Comparative evaluation concerned 4 composites of a bulk-fill type: SonicFill, Tetric EvoCeram Bulk Fill, Filtek Bulk Fill, and SDR. The study used 30 third molars without caries. In each tooth 4 cavities of class II were prepared. The prepared tooth samples were placed in a 1% methylene blue solution for 24 h, and after that in each restoration the depth of dye penetration along the side walls was evaluated.
  
  
  RESULTS
  The highest rating (score 0, no dye penetration) was achieved by 93.33% of the restorations made of the SDR material, 90% of restorations of SonicFill system, 86.66% of restorations of the composite Filtek Bulk Fill, and 73.33% of restorations of the Tetric EvoCeram Bulk Fill.
  
  
  CONCLUSIONS
  The performed study showed that bulk-fill flowable or sonic-activated flowable composite restorations have better marginal sealing (lack of discoloration) in comparison with bulk-fill paste-like composite.
authors: Department of Conservative Dentistry and Endodontics, Medical University of Lublin, Ulica Karmelicka 7, 20-081 Lublin, Poland.
authors: Mirosław
authors: M
authors: Orłowski
authors: Department of Conservative Dentistry and Endodontics, Medical University of Lublin, Ulica Karmelicka 7, 20-081 Lublin, Poland.
authors: Bożena
authors: B
authors: Tarczydło
authors: Department of Conservative Dentistry and Endodontics, Medical University of Lublin, Ulica Karmelicka 7, 20-081 Lublin, Poland.
authors: Renata
authors: R
authors: Chałas
mesh_terms: D003188:Composite Resins / Q000008:administration & dosage / Q000592:standards*; D003764:Dental Materials / Q000592:standards*; D004353:Drug Evaluation, Preclinical / Q000379:methods; D006801:Humans; D008963:Molar / Q000187:drug effects* / Q000502:physiology
chemical_list: D003188:Composite Resins; D003764:Dental Materials; C467913:Filtek Flow; C501891:Tetric EvoCeram