title: [Clinical research of EDTA pretreatment on the bonding strength of resin].
abstract: OBJECTIVE
  This study was to evaluate clinical results of adhesives to sclerotic dentin in non-carious cervical lesions pretreated with ethylene diamine tetraacetic acid (EDTA).
  
  
  METHODS
  Twelve patients who had at least one pair of teeth with typical cervical wedge-shaped defects and class III sclerotic dentin were selected. The teeth were randomly divided into experimental and control groups. In the experimental group, EDTA was used to pretreat dentin surface first and then self-etching resin adhesive; In the control group, only self-etching resin adhesive was used. Modified USPHS rating system was applied in baseline, 6 months and 12 months after treatment. SAS 8.02 software package was used for two-sample rank sum test.
  
  
  RESULTS
  At the time point of 6-month and 12-month, the scores in the experimental group were significantly better than the control group (P<0.05).
  
  
  CONCLUSIONS
  EDTA pretreatment of the sclerotic dentin of cervical wedge-shaped defects could improve the resin bonding strength, marginal discoloration, marginal form and surface quality.
authors.affiliation: Department of Endodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine; Shanghai Key Laboratory of Stomatology. Shanghai 200011, China.E-mail:150409616@qq.com.
authors.forename: Ting-ting
authors.initials: TT
authors.lastname: Li
authors.forename: Min-min
authors.initials: MM
authors.lastname: Sun
authors.forename: Jun-tang
authors.initials: JT
authors.lastname: Kang
authors.forename: Zhe
authors.initials: Z
authors.lastname: Sun
mesh_terms: D000134:Acid Etching, Dental; D000269:Adhesives; D001840:Dental Bonding / Q000379:methods*; D003804:Dentin; D003809:Dentin, Secondary; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D004492:Edetic Acid / Q000737:chemistry*; D006801:Humans
chemical_list: D000269:Adhesives; D017220:Dentin-Bonding Agents; D004492:Edetic Acid