Abstract: The application value of cone beam CT technology (CBCT) in evaluating transitional dentures in complete denture restoration was explored in this study. 107 patients with complete denture restoration were selected. Transitional denture restorations were divided into restoration failure group (n=26) and restoration success group (n=81) according to restoration effect. CBCT examination was performed before and after the repair, and the changes in the anterior space, middle space, and posterior space of the temporomandibular joint between the two groups were compared. The results showed that the changes in the anterior space, middle space and posterior space of the temporomandibular joint with the new and old dentures in the repair failure group were greater than those in the repair success group (P<0.05). The changes of the anterior space, middle space, and posterior space of the temporomandibular joint with the new and old dentures were negatively correlated with the jaw position relationship index, chewing efficiency, aesthetic score, and comfort (P<0.05). Logistic univariate and multivariate regression analysis showed that the changes in the anterior space, middle space and posterior space of temporomandibular joint were independently correlated with the restoration effect of complete denture (P＜0.05). The AUC of the combined evaluation of the changes in the anterior space, middle space and posterior space of the temporomandibular joint was 0.905, the sensitivity was 80.77%, and the specificity was 88.89%, which was significantly better than the individual evaluation of each index. CBCT examination indicators can effectively evaluate the application effect of transitional dentures in the restoration of complete dentures, and provide a reliable reference for clinical practice.

Key words: complete denture, restoration, transitional denture, cone beam CT