title: In vitroEvaluation of Stainless Steel Crowns cemented with Resin-modified Glass Ionomer and Two New Self-adhesive Resin Cements.
abstract: OBJECTIVE
  To assess and compare the retentive strength of two dual-polymerized self-adhesive resin cements (RelyX U200, 3M ESPE & SmartCem2, Dentsply Caulk) and a resin-modified glass ionomer cement (RMGIC; RelyX Luting 2, 3M ESPE) on stainless steel crown (SSC).
  
  
  METHODS
  Thirty extracted teeth were mounted on cold cured acrylic resin blocks exposing the crown till the cemento-enamel junction. Pretrimmed, precontoured SSC was selected for a particular tooth. Standardized tooth preparation for SSC was performed by single operator. The crowns were then luted with either RelyX U200 or SmartCem2 or RelyX Luting 2 cement. Retentive strength was tested using Instron universal testing machine. The retentive strength values were recorded and calculated by the formula: Load/Area.
  
  
  METHODS
  One-way analysis of variance was used for multiple comparisons followed bypost hocTukey's test for groupwise comparisons. Unpaired t-test was used for intergroup comparisons.
  
  
  RESULTS
  RelyX U200 showed significantly higher retentive strength than rest of the two cements (p < 0.001). No significant difference was found between the retentive strength of SmartCem2 and RelyX Luting 2 (p > 0.05).
  
  
  CONCLUSIONS
  The retentive strength of dual-polymerized self-adhesive resin cements was better than RMGIC, and RelyX U200 significantly improved crown retention when compared with SmartCem2 and RelyX Luting 2.
  Pathak S, Shashibhushan KK, Poornima P, Reddy VVS.In vitroEvaluation of Stainless Steel Crowns cemented with Resin-modified Glass Ionomer and Two New Self-adhesive Resin Cements. Int J Clin Pediatr Dent 2016;9(3):197-200.
authors.affiliation: Postgraduate Student, Department of Pedodontics and Preventive Dentistry, College of Dental Sciences, Davangere, Karnataka, India.
authors.forename: Sidhant
authors.initials: S
authors.lastname: Pathak
authors.affiliation: Professor, Department of Pedodontics and Preventive Dentistry, College of Dental Sciences, Davangere, Karnataka, India.
authors.forename: K K
authors.initials: KK
authors.lastname: Shashibhushan
authors.affiliation: Professor and Head, Department of Pedodontics and Preventive Dentistry, College of Dental Sciences, Davangere, Karnataka, India.
authors.forename: P
authors.initials: P
authors.lastname: Poornima
authors.affiliation: Professor, Department of Pedodontics and Preventive Dentistry, College of Dental Sciences, Davangere, Karnataka, India.
authors.forename: Vv Subba
authors.initials: VS
authors.lastname: Reddy
keywords: Resin-modified glass ionomer cement; Retentive strength; Self-adhesive resin cement; Stainless steel crown.