title: Fracture resistance of resin-based composite and ceramic inlays luted to sound human teeth.
abstract: OBJECTIVE
  To assess the fracture resistance of resin-based composites (Zeta, Targis, Solidex,) and ceramic (Vitadur Alpha) inlays luted to extracted sound human premolars and classify their fracture modes.
  
  
  METHODS
  40 extracted sound human premolars were prepared to receive an indirect inlay restoration. They were divided into four different restorative materials groups as follows: Group A, Vitadur Alpha; Group B, Zeta; Group C, Targis; and Group D, Solidex. All restorations were luted with a resin luting cement (Opal). Specimens were loaded to failure in compression, and statistically analyzed (ANOVA). Fracture modes were recorded.
  
  
  RESULTS
  There were no statistical differences among the four groups (A, 1,070 +/- 313.8 N; B, 942.4 +/- 172.4 N; C, 1,039 +/- 271.9 N; D, 1,022 +/- 186.3 N). The predominant failure mode was a severe fracture of tooth and/or restoration.
authors.affiliation: University of Passo Fundo, Brazil. alberton@tpo.com.br
authors.forename: Simone Beatriz Alberton
authors.initials: SB
authors.lastname: da Silva
authors.forename: Leandro Augusto
authors.initials: LA
authors.lastname: Hilgert
authors.forename: Adair Luiz Stefanelo
authors.initials: AL
authors.lastname: Busato
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry; D002484:Cementation; D002516:Ceramics / Q000737:chemistry*; D003188:Composite Resins / Q000737:chemistry*; D003776:Dental Porcelain / Q000737:chemistry; D019232:Dental Restoration Failure; D003799:Dental Stress Analysis; D005899:Glass Ionomer Cements / Q000737:chemistry; D006801:Humans; D007284:Inlays; D019279:Resin Cements / Q000737:chemistry; D012823:Silicate Cement / Q000737:chemistry; D013499:Surface Properties
chemical_list: D003188:Composite Resins; D005899:Glass Ionomer Cements; D019279:Resin Cements; C113676:Solidex; C483703:Vitadur; C111282:dental polyglass; C483027:vitadur alpha; D003776:Dental Porcelain; D012823:Silicate Cement; D000537:Aluminum Oxide