title: Three-year clinical performance of two indirect composite inlays compared to direct composite restorations.
abstract: OBJECTIVE
  Despite the incremental build-up of resin composite restorations, their polymerization shrinkage during curing presents a serious problem. Indirect composite resin systems represent an alternative in overcoming some of the deficiencies of direct composite restorations. The hypothesis of the present study states that the clinical performance of restorations may be affected by different generation and application techniques.
  
  
  METHODS
  Sixty restorations (20 DI system (Coltène/Whaledent AG, Altstätten, Switzerland) composite inlays, 20 Tescera ATL system (BISCO Inc. Schaumburg, Illinois, USA) composite inlays, and 20 direct composites) were applied to premolar teeth in 49 patients. Restorations were clinically evaluated by two examiners. Data were analyzed using the Kruskal-Wallis, Mann-Whitney U, Wilcoxon Signed Ranks, and X2 tests.
  
  
  RESULTS
  The Tescera ATL system performed significantly better than both direct composite restorations (p<0.001) and DI system (p<0.05).
  
  
  CONCLUSIONS
  Within the limitations of this 3-year clinical study, indirect resin restorations showed better scores than direct restorations. In addition, the Tescera ATL system was found to be more successful than the DI system and direct composite restorations.
authors.affiliation: Department of Restorative Dentistry, Faculty of Dentistry, Ataturk University, Erzurum, Turkey.
authors.forename: Nurcan
authors.initials: N
authors.lastname: Ozakar-Ilday
authors.forename: Yahya-Orcun
authors.initials: YO
authors.lastname: Zorba
authors.forename: Mehmet
authors.initials: M
authors.lastname: Yildiz
authors.forename: Vildan
authors.initials: V
authors.lastname: Erdem
authors.forename: Nilgun
authors.initials: N
authors.lastname: Seven
authors.forename: Sezer
authors.initials: S
authors.lastname: Demirbuga
mesh_terms: D000328:Adult; D003188:Composite Resins; D019554:Dental Restoration Wear; D005260:Female; D006801:Humans; D007284:Inlays; D008297:Male; D008422:Materials Testing; D013997:Time Factors
chemical_list: D003188:Composite Resins; C481142:TESCERA ATL