title: Three-year clinical evaluation of a two-step self-etch adhesive with or without selective enamel etching in non-carious cervical sclerotic lesions.
abstract: OBJECTIVE
  The purpose of this prospective, controlled, randomized study was to evaluate the 3-year clinical performance of a two-step self-etch adhesive (AdheSE, Ivoclar Vivadent; Schaan, Liechtenstein) in non-carious cervical sclerotic lesions with or without selective acid-etching of the enamel margins.
  
  
  METHODS
  Twenty-two patients (mean age 51.5) having at least two pairs of non-carious cervical sclerotic erosion⁄attrition⁄abfraction lesions with incisal or occlusal margins in the enamel and gingival margins in the dentin were included in the study. The two-step self-etch adhesive was applied following either the self-etch approach (AdheSE non-etch, n = 52) or a similar application approach, including prior selective acid-etching of the enamel margins (AdheSE etch, n = 52). Composite resin Point 4 (Kerr Corp; Orange, CA, USA) was used as the restorative material for all 104 restorations. The restorations were evaluated at baseline and after 1, 2, and 3 years, according to the modified USPHS criteria. Data were analyzed using McNemar's test (p < 0.05).
  
  
  RESULTS
  The retention rates for AdheSE non-etch were 100 %, 98 %, and 91.5 %; whereas, 100 %, 100 %, and 97.9 % retention rates were recorded for AdheSE etch after 1, 2, and 3 years, respectively. No significant differences were detected between the retention rates, marginal adaptation at the dentin side, secondary caries, and postoperative sensitivity (p > 0.05). A significantly higher number of restorations in AdheSE non-etch group showed clinically acceptable slight marginal discoloration (p = 0.0001) and clinically acceptable small marginal defects at the enamel side (p = 0.008) than in the AdheSE etch group.
  
  
  CONCLUSIONS
  After 3 years, the two-step self-etch adhesive exhibited acceptable clinical performance with or without selective enamel etching in non-carious cervical sclerotic lesions.
  
  
  CONCLUSIONS
  Selective acid-etching of the enamel margins enhanced the performance of the two-step self-etch adhesive in terms of marginal discoloration and marginal adaptation at the enamel side.
authors.affiliation: Department of Operative Dentistry, Faculty of Dentistry, Yeditepe University, İstanbul, Turkey, esracansay@yahoo.com.
authors.forename: Esra
authors.initials: E
authors.lastname: Can Say
authors.forename: Emre
authors.initials: E
authors.lastname: Özel
authors.forename: Haktan
authors.initials: H
authors.lastname: Yurdagüven
authors.forename: Mübin
authors.initials: M
authors.lastname: Soyman
mesh_terms: D003738:Dental Cements; D045662:Dental Etching; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D019237:Tooth Cervix / Q000473:pathology*
chemical_list: D003738:Dental Cements