title: [DT Light-Post system for prosthodontic treatment of residual root and crown teeth].
abstract: OBJECTIVE
  To evaluate the clinical effect of DT Light-Post system in prosthodontic treatment for the residual root and crown.
  
  
  METHODS
  193 patients with 287 anterior teeth and premolars were involved, including 195 residual crowns and 92 residual roots. After complete root canal therapy, the teeth were treated with DT Light-Post system and all-ceramic crowns. Results of residual crowns and residual roots were analyzed statistically with SAS 6.12 software package for Chi-square test.
  
  
  RESULTS
  After observation for 1 to 3 years, 6 crowns with core and post were lost in 195 residual crowns, and 17 lost in 92 residual roots. And all the lost cases were cemented with chemo-setting adhesives, and none of them lost again in one year. On the other hand, no post or root broken were found. The total successful rate was 91.98%. And the lost rate of crowns in patients with residual crowns was significantly lower than those with residual root (P=0.001).
  
  
  CONCLUSIONS
  Fiber post is an idea method for post-and-core restorations, the successful rate is affected significantly by the indication, the type of adhesion and the adhesive technique.
authors.affiliation: Department of Stomatology, Luwan Branch Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200020, China.
authors.forename: Wei-xing
authors.initials: WX
authors.lastname: Xu
authors.forename: Kan
authors.initials: K
authors.lastname: Xu
authors.forename: Dan-ping
authors.initials: DP
authors.lastname: Ruan
mesh_terms: D001641:Bicuspid; D003442:Crowns; D003776:Dental Porcelain; D019232:Dental Restoration Failure; D006801:Humans; D011176:Post and Core Technique; D011476:Prosthodontics; D012390:Root Canal Therapy
chemical_list: D003776:Dental Porcelain