title: Effect of a nonrinse conditioner on the durability of a polyacid-modified resin composite fissure sealant.
abstract: OBJECTIVE
  The aim of this study was to evaluate the effect of the simplified conditioning on durability of polyacid-modified resin composite (PMRC; Dyract Seal) fissure sealants. The effectiveness of a nonrinsing conditioner (NRC) on retention of PMRC sealants (92) was studied in a split-mouth design.
  
  
  METHODS
  The enamel of 1 molar was pretreated with NRC and coated with Prime & Bond NT (Dentsply DeTrey, Konstanz, Germany)/PMRC. The contralateral molar was conditioned with 36% phosphoric acid and sealed with Delton. The sealant retention was evaluated during 2 years. In addition 49 pairs were sealed with Prime & Bond NT/PMRC after conditioning with 36% phosphoric acid and evaluated after 1 year.
  
  
  RESULTS
  Significantly higher loss rates at 1 and 2 years were observed for the NRC/Prime & Bond NT/PMRC sealants. At 2 years, partial and total loss rates for Delton were 23% and 11%, and for NRC/Prime & Bond NT/PMRC sealants were 44% and 40%, respectively. At 1 year, phosphoric acid-conditioned Prime & Bond NT/PMRC sealants showed significantly better retention than the NRC-conditioned PMRC sealants and the phosphoric acid-conditioned Delton sealants.
  
  
  CONCLUSIONS
  Conditioning with NRC prior to sealant application cannot be recommended.
authors.affiliation: Public Dental Health Clinic Kiruna, Sweden. ewa.lampa@odont.umu.se
authors.forename: Ewa
authors.initials: E
authors.lastname: Lampa
authors.forename: Anna
authors.initials: A
authors.lastname: Brechter
authors.forename: Jan W V
authors.initials: JW
authors.lastname: van Dijken
mesh_terms: D000293:Adolescent; D017438:Bisphenol A-Glycidyl Methacrylate; D002648:Child; D020770:Compomers; D003188:Composite Resins; D001840:Dental Bonding; D045662:Dental Etching / Q000379:methods*; D018772:Dental Marginal Adaptation; D019232:Dental Restoration Failure; D003793:Dental Restoration, Permanent / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D010895:Pit and Fissure Sealants; D011109:Polymethacrylic Acids; D019279:Resin Cements
chemical_list: D020770:Compomers; D003188:Composite Resins; D010895:Pit and Fissure Sealants; D011109:Polymethacrylic Acids; C425843:Prime and Bond NT; D019279:Resin Cements; C496147:dyract seal; D017438:Bisphenol A-Glycidyl Methacrylate