Comparison of hot pressing cast porcelain inlay, zirconia all porcelain inlay and alumina ceramic inlay for repairing adjacent maxillofacial defects of teeth

Objective To compare the effects of the application of hot pressing cast porcelain inlay, zirconia all porcelain inlay and alumina ceramic inlay for repairing adjacent maxillofacial defects of teeth. Methods A total of 120 cases (159 teeth) of the patients with adjacent maxillofacial defects of teeth treated in the Department of Stomatology of the Third Affiliated Hospital of Xinxiang Medical College from January 2010 to December 2017 were selected. According to the random groups of the repair scheme, 50 teeth were treated with hot pressed ceramic inlay, and 55 teeth were treated with zirconia all ceramic inlay, 54 teeth were treated with alumina ceramic inlay. The mean follow-up period was 12 months, and the curative effect was evaluated from the aspects of the wear of the prosthesis, the color of the prosthesis, the secondary caries of the abutment teeth, the marginal density and the shape of the prosthesis. Results The average follow-up period was 12 months. The total effective rate of secondary caries and marginal tightness of the three groups was 100%, and there was no significant difference between the three groups (P>0.05). However, the color repair effective rate of hot-pressed porcelain inlay group was 100% (50/50), which was significantly higher than that of zirconia all ceramic inlay group (74.55%, 41/55) and alumina ceramic inlay group (83.33%, 45/54), the difference was statistically significant (P 0.05). In terms of repair wear, the wear of zirconia all ceramic inlay group was 100% (55/55), which was significantly higher than that of hot pressed porcelain inlay group[78.00% (39/50)]and alumina ceramic inlay group [83.33% (45/54, P<0.05]. Conclusions In view of the patients with adjacent maxillofacial defects of teeth in the stomatology department, the hot pressed ceramic inlay scheme, zirconia all ceramic inlay scheme and alumina ceramic inlay scheme were used to repair the defects. The results were significant in marginal cohesion and secondary caries of abutment teeth; however, the hot pressed ceramic inlay scheme is more ideal in the aspect of restoration color, and the zirconia all ceramic inlay scheme is more ideal in the aspect of restoration shape and restoration wear. According to the specific disease characteristics of patients, we can make personalized choice for different all ceramic materials. Key words: Adjacent maxillofacial defects of teeth; Hot pressing cast porcelain inlay; Zirconia all ceramic inlay; Alumina ceramic inlay; Repair