Objective To analyze the accuracy of the three-dimensional position of the jaw anatomical structure in the real-time positioning of the dental implant surgery by using the computer-assisted dynamic navigation system to guide the dental implant surgery in patients with dentition defect,and to explore the possible factors affecting its accuracy,so as to provide reference for clinical application and promotion.Methods 31 patients with 52 implants underwent dental implant surgery under the guidance of computer-assisted dynamic navigation system in the Department of Stomatology in Chancheng District People's Hospital of Foshan City from April 2022 to September 2023 were selected.According to the implant location,they were divided into maxillary group(n=21)and mandibular group(n=31).The patients wore a suitable registration device and underwent cone beam computed tomography(CBCT)before surgery,and the obtained preoperative image data were imported into the real-time dynamic navigation system to design the preoperative plan of the implant.Implant implantation was completed under the guidance of the computer-assisted dynamic navigation system.CBCT was taken after the operation.The obtained data and preoperative design DK file were imported into the accuracy verification software,and the images before and after the operation were registered and overlapped to automatically calculate the error value.The average implant point error,the average end point error,the average implant angle error,the average implant point depth error,the average end point depth error,the average implant point horizontal error and the average end point horizontal error were analyzed.Results The average implant point error of 52 implants was(1.838±1.239)mm,the average end point error was(1.965±1.232)mm,the average implant angle error was(3.770±2.139)°,the average implant point horizontal error was(1.125±0.773)mm,the average end point horizontal error was(1.348±0.907)mm,the average implantation point depth error was(-0.586±1.617)mm,and the average end point depth error was(-0.417±1.651)mm.The average implantation point errors of maxillary group and mandibular group were(1.362±1.117)mm and(2.160±1.231)mm,respectively.The average end point errors were(1.500±1.138)mm and(2.279±1.209)mm,respectively.The average implantation angle errors were(3.064±2.089)° and(4.248±2.070)°,respectively.The average horizontal errors of implant point were(0.649±0.271)mm and(1.447±0.837)mm,respectively.The average end point horizontal errors were(0.855±0.497)mm and(1.682±0.974)mm,respectively.The average implant depth errors were(-0.879±1.369)mm and(-0.387±1.813)mm.The average end point depth errors were(-0.851±1.371)mm and(-0.123±1.722)mm,respectively.Among them,there were statistically significant differences in average implantation point error,average endpoint error,average implantation angle error,average implantation point horizontal error and average endpoint horizontal error between the two groups(P<0.05).There was no significant difference in the average implantation depth error and the average end point depth error between the two groups(P>0.05).Conclusion Computer-assisted dynamic navigation technology has a high precision of implant surgery,and the implant precision of maxillary is higher than that of mandibular.However,it is still affected by a variety of factors,there may be errors in the use of each operation must be checked repeatedly,as far as possible to make each step accurate,so as to improve the accuracy of the implant surgery.
维普
万方数据