The clinical study of restoration for anterior aesthetic zone with different material post and core crown

Objective To observe the clinical effect of glass fiber pile combined with all-ceramic crown in restoration for dental defects of anterior aesthetic zone compared with cast metal post-core combined with cobalt-chromium PFM crown. Methods The present investigation enrolled 100 patients(150 teeth) who had been treated for dental defects of anterior aesthetic zone. According to the patient's request, they were divided into two groups. After root canal therapy, Group A(50 patients, 70 teeth) was treated by glass fiber pile combined with all-ceramic crown. Group B(50 Patients, 80 teeth) was treated by cast metal post-core combined with cobalt- chromium PFM crown. We detected the periodontal probing depth and the alkaline phosphatase(ALP) levels in gingival crevicular fluid(GCF) in the preoperation and postoperation.We observed the fitness of prosthesis edge and the aesthetic manifestations of anterior zone. Followed up for 1 to 3 years, we observed the success rate for restoration and evaluated the long-term curative effect between two groups. Results There was statistical difference in the success rate for restoration between two groups(88.6% vs.77.5%, P0.05). After restoration for 1 year, the marginal adaptation and color match in the group A were significantly better than those in the group B(P0.05). After treatment for 1 year and 3 years, periodontal probing depth between two groups has increased over that in the preoperation, but the difference was not statistically significant(P0.05). The levels of ALP in GCF of group B was significantly higher than that in the preoperation(P0.05). Conclusion Glass fiber pile combined with all-ceramic crown has relatively small stimulation on periodontium, has a good biocompatibility and aesthetics, which can be used as an ideal restoration method for anterior aesthetic restorations.