[DT Light-Post system for prosthodontic treatment of residual root and crown teeth].

PURPOSE: 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). CONCLUSION: 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.