Clinical study of digital guides combined with 3D printed donor tooth models in extended tooth autotransplantation
Objective To accurately prepare artificial alveolar sockets by using digital guides combined with 3D-printed donor models,and to observe their clinical efficacy and success rate.Methods From January 2022 to June 2023,patients who attended the outpatient clinic of the Department of Oral Surgery of the First Affiliated Hospital of Xinjiang Medical University for the treatment of autogenous tooth transplantation were divided into the experimental group(3D model + digitized surgical guide)and the control group(3D model),each of which consisted of 24 patients.In the experimental group,CBCT images of the patients were imported into Mimics software in DICOM format to match the donor teeth according to the occlusal and spatial conditions,3D reconstruction was performed to simulate the optimal implantation direction of the donor teeth,and the 3D model of the donor teeth and guide plate were designed and printed.During the operation,the time of surgical operation,the time of socket preparation,the time of donor in vitro,and the number of trials of donor teeth and 3D models were recorded.Clinical and imaging examinations of the grafted teeth were performed at 1 week and 1,3,6,and 12 months postoperatively to assess graft looseness and periodontal tissue healing.Results The donor tooth release time,alveolar socket preparation time,and surgical operation time were shorter in the experimental group than in the control group and were statistically different(P<0.05).The number of tooth donor and 3D model trials was less and statistically different in the experimental group(P<0.05).There were no statistical differences in donor tooth looseness,preoperative anxiety,postoperative pain scores(1,3,and 7 d),and postoperative satisfaction at 1 week,3 months,and 6 months postoperatively between the two groups(P>0.05).All transplanted teeth in the experimental and control groups met the success criteria,and the success rate was 100%,and there was no statistically significant difference in the success rate between the two groups(P>0.05).Conclusion 3D donor tooth model combined with digital guides can accurately prepare artificial tooth sockets and shorten the time of socket preparation and the time of donor tooth in vitro.
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