title: [Evaluation of the coronal leakage of fiber posts using different adhesive approaches].
abstract: OBJECTIVE
  To test and compare the marginal leakage of radicular dentin cemented with three resin cements.
  
  
  METHODS
  Nine extracted maxillary incisors after endodontically treated were divided into 3 groups(n=3).Fiber posts were inserted using three resin cements: One-Step Plus/DuoLink (OD),ParaCore Automix (PA) and RelyXTM Unicem(RU).All teeth were subjected to thermocycling for 5000 cycles. All teeth were stained in 0.1% basic fuchsin for 24h and then longitudinally sectioned into four parts.Coronal leakage was evaluated. SAS 6.0 software package was used for Kruskal-Wallis test.
  
  
  RESULTS
  Different resin cements significantly affected the coronal leakage of fiber posts(P<0.001).
  
  
  CONCLUSIONS
  The system RU, which represents a new simplified self-adhesive protocol, performs the best sealing capacity.
authors.affiliation: Department of Prosthodontics, Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology. Shanghai 200011, China. jackanton@126.com
authors.forename: Kai
authors.initials: K
authors.lastname: Gao
authors.forename: Li-ping
authors.initials: LP
authors.lastname: Chen
mesh_terms: D000269:Adhesives; D003188:Composite Resins; D003786:Dental Pulp Cavity; D003804:Dentin; D017220:Dentin-Bonding Agents; D008689:Methacrylates; D011176:Post and Core Technique; D019279:Resin Cements
chemical_list: D000269:Adhesives; C103506:Bis-GMA, BPDM, HEMA dental-bonding resin; D003188:Composite Resins; D017220:Dentin-Bonding Agents; D008689:Methacrylates; D019279:Resin Cements