title: [In vitro study of marginal microleakage of Clearfil S3 BOND adhesive systems and Majesty composite resin].
abstract: OBJECTIVE
  To evaluate the microleakage of standard box-type cavity filled with Clearfil S3 BOND self-etch adhesive systems and Majesty composite resin.
  
  
  METHODS
  40 permanent molars were randomly divided into experimental and control groups, 20 of each . The box-type cavities, 3mm in length and width and 2mm in depth, were prepared at the cemento-enamel junction on buccal surface of forty permanent extracted teeth. According to grouping, the experimental group was filled with Clearfil S(3) BOND self-adhesive systems and Majesty composite resin, and the control group was filled with 3M Adper Prompt self-adhesive and Filtek Z350 composite resin. After thermal circulation(2000 times, 5 degrees centigrade-55 degrees centigrade) and soaked for 24 hours in 2% methyl blue solution, the samples were cut through the midline of the restoration and the leakage depth was measured with vernier caliper. The microleakage degrees and microleakage depth of 2 groups were analyzed with SPSS 17.0 software package for Mann-Whitney U test and independent-samples t test.
  
  
  RESULTS
  Microleakage was observed in both groups. But the microleakage degrees and microleakage depth of 2 groups had no significant difference (P>0.05).
  
  
  CONCLUSIONS
  The marginal sealibility of Clearfil S(3) BOND self-adhesive systems and Majesty composite resin is as good as Adper Prompt self-adhesive and Filtek Z350 composite resin,it may be an ideal clinical restoration material.
authors.affiliation: Department of Operative Dentistry and Endodontics, Ninth People's Hospital,College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai 200011, China. wb1569@126.com
authors.forename: Bei
authors.initials: B
authors.lastname: Wang
authors.forename: Ya-qin
authors.initials: YQ
authors.lastname: Zhu
mesh_terms: D000269:Adhesives; D003188:Composite Resins; D003737:Dental Cavity Preparation; D003743:Dental Enamel; D003763:Dental Leakage; D003793:Dental Restoration, Permanent; D017220:Dentin-Bonding Agents; D006801:Humans; D066298:In Vitro Techniques; D008963:Molar; D019279:Resin Cements
chemical_list: D000269:Adhesives; C505694:Clearfil S3 Bond; D003188:Composite Resins; D017220:Dentin-Bonding Agents; D019279:Resin Cements; C533204:filtek Z350