Study on clinical application of 3D printing model in the extraction of donor tooth for autotransplantation

Abstract

Abstract Objective To clarify whether the 3D printing model has auxiliary functions in toto extraction of donor tooth (DT) for autotransplantation of teeth (ATT).Methods A questionnaire survey was designed to investigate the auxiliary function of 3D model in extraction. Then, a clinical study was designed on intra-group comparison between the predicted and actual donor teeth situation in different cases. Finally, the consistent rate for the predicted results and the actual results were compared with the two groupsResults The overall difficulty of general practitioners was significantly higher than surgeons (p = 0,031). General practitioners believed that the model is more beneficial than the surgeon in the complete extraction of donor teeth, and the difference was statistically in the evaluation of the root number and root curvature of donor teeth. A remarkable difference was observed between the predicted results and the actual results of tooth positions and root numbers in group without model (p < 0,05). The consistency rate of the model group (94.62%) was significantly higher than that of non 3D model group (86.15%) (p = 0.034).Conclusion The 3D printing model of DT is helpful for dentists to predict the accuracy of toto extraction in donor teeth.