title: One-year Clinical Evaluation of Resin Composite Restorations of Noncarious Cervical Lesions in Smokers.
abstract: OBJECTIVE
  To evaluate the one-year clinical performance of composite restorations in noncarious cervical lesions placed in smoking and non-smokers using a multimode adhesive system with two adhesive strategies.
  
  
  METHODS
  Among the selected cervical lesions, four experimental groups were formed based on the patients' smoking habit and bonding strategies with a multimode adhesive system (n = 38): G1: etchand- rinse in non-smokers; G2: selective enamel etching in non-smokers; G3: etch-and-rinse in smokers; G4: selective enamel etching in smokers. The restorations were paired, ie, each patient received at least two restorations. A nanofilled resin composite was applied and light cured incrementally in all groups by one operator. Two calibrated examiners evaluated the restorations at baseline, 6 and 12 months after placement. The modified USPHS criteria were used for evaluation. Data were analyzed using the chi-square (for associations between groups) and McNemar tests.
  
  
  RESULTS
  No statistically significant difference was found between groups for the criteria of retention, marginal discoloration, color match, marginal integrity, or sensitivity after 6 and 12 months. The assessments over time showed a statistically significant difference only for marginal discoloration at 12 months for groups 1, 3, and 4 when compared to baseline (p = 0.031). There were no statistical differences for any criteria evaluated among smokers and non-smokers, except for color match, where a difference was found after the baseline evaluation. Regarding the adhesive strategy, etch-and-rinse resulted in a clinical performance similar to that of selective enamel etching over 12 months.
  
  
  CONCLUSIONS
  Neither cigarette smoking habit nor adhesive strategy influenced the clinical performance of resin composite cervical restorations over the first year.
authors.forename: Luana Dutra
authors.initials: LD
authors.lastname: de Carvalho
authors.forename: Renata
authors.initials: R
authors.lastname: Gondo
authors.forename: Guilherme Carpena
authors.initials: GC
authors.lastname: Lopes
mesh_terms: D000134:Acid Etching, Dental / Q000379:methods; D000328:Adult; D003116:Color; D003188:Composite Resins / Q000737:chemistry*; D001840:Dental Bonding / Q000379:methods; D003743:Dental Enamel / Q000648:ultrastructure; D018772:Dental Marginal Adaptation; D003764:Dental Materials / Q000737:chemistry*; D017268:Dental Prosthesis Retention; D003793:Dental Restoration, Permanent / Q000379:methods*; D003807:Dentin Sensitivity / Q000209:etiology; D004311:Double-Blind Method; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D055115:Light-Curing of Dental Adhesives / Q000379:methods; D008297:Male; D008875:Middle Aged; D053761:Nanocomposites / Q000737:chemistry; D012907:Smoking; D013499:Surface Properties; D019237:Tooth Cervix / Q000473:pathology*; D057085:Tooth Wear / Q000628:therapy*; D055815:Young Adult
chemical_list: D003188:Composite Resins; D003764:Dental Materials