Therapeutic effect of CAD/CAM glass-ceramic high inlay in repairing large area defects of maxillary first premolars
Objective To observe the efficacy of CEREC 3D chair side computer-aided design and manufacturing(CAD/CAM)glass-ceramic high inlay in repairing large area defects of maxillary first premolars.Methods A total of 72 patients with large maxillary first premolar defects admitted to Yantai Yantai Mountain Hospital from February 2017 to June 2019 were retrospectively selected,including 31 males and 41 females who were(38.57±7.21)years old.All the affected teeth were repaired by the CEREC 3D chair-side CAD/CAM technique one week after one-time root canal treatment,and were followed up for 24 months after the restoration.The repair effects 3,6,12 and 24 months after reprir and their repair satisfaction 24 months after repair were analyzed.x2 test was applied.Results Three months after the restoration,all the patients achieved grade A in terms of edge fit,restoration defect,porcelain fracture,restoration loss,color matching,connection relationship,and periodontal development.The proportions of the patients with grade B of different evaluation items 6,12,and 24 months after restoration slightly increased,with no statistical difference in the repair effect between different times(x2=0.383,P=0.702).Twenty-four months after the restoration,the satisfaction rates with the restoration color,restoration shape,surface smoothness,and inlay edge suitability were 86.11％(62/72),98.61％(71/72),88.89％(64/72),and 97.22％(70/72),respectively.Conclusion CAD/CAM glass-ceramic inlay is an effective method for repairing large-area defects of maxillary first premolars after root canal treatment,and is worthy of clinical application.
High inlayChairside computer-aided design and productionMaxillary first premolarsLarge area defectsRestoration
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