title: In vitro evaluation of the effect of two finishing and polishing systems on four esthetic restorative materials.
abstract: OBJECTIVE
  To determine the surface roughness of esthetic restorative materials after finishing and polishing.
  
  
  METHODS
  All 60 specimens were divided into four groups. Group I: Nanocomposite, Z 350 XT (3M ESPE, USA); Group II: Microhybrid composite, Z 250 (3M ESPE, USA); Group III: Compomer, Dyract XP (LD Caulk/Dentsply, USA); and Group IV: Resin modified glass ionomer cement (GIC), Fuji II LC (GC, Japan). Each group was again divided into three subgroups. Subgroup A: Sof-Lex (3M ESPE); Subgroup B: Super-Snap Rainbow finishing and polishing kit (Shofu INC, Japan); and Subgroup C: Control Mylar strip. Surface roughness was determined by Perthen Perthometer S6P profilometer.
  
  
  RESULTS
  Filtek Z350 XT showed minimum surface roughness followed by Filtek Z250, Dyract XT and Fuji II LC. Super-Snap exhibited less surface roughness than Sof-Lex polishing systems.
  
  
  METHODS
  One-way analysis of variance (ANOVA) followed by multiple post hoc comparisons using least square difference method and unpaired t-test was used.
  
  
  CONCLUSIONS
  Filtek Z350 XT with Mylar strip exhibited least surface roughness.
authors.affiliation: Department of Conservative Dentistry and Endodontics, Institute of Dental Studies and Technologies, Modinagar, Uttar Pradesh, India.
authors.forename: Rochna
authors.initials: R
authors.lastname: Rai
authors.affiliation: Department of Conservative Dentistry and Endodontics, Institute of Dental Studies and Technologies, Modinagar, Uttar Pradesh, India.
authors.forename: Ruchi
authors.initials: R
authors.lastname: Gupta
keywords: Composite; finishing; glass ionomer cement; polishing; surface roughness