The Accuracy Of Dynamic Navigation For Dental Implant Surgery

Purpose: The purpose of this study was to measure and compare the accuracy of dynamic navigation with static guided implant placement.Materials and Methods: This in-vivo study was performed in the Department of Oral Implantology,Affiliated Stomatological Hospital of Fujian Medical University from January 2018 to October 2019.Obtained data from 54 patients with dentition defect involving 95 implants were evaluated.Patients were divided into two groups according to surgical methods,including dynamic navigation and static guide.All patients were performed preoperative and postoperative cone beam computed tomography(CBCT)scans.Preoperative CBCT was transferred to dynamic or static guided implant planning software to plan the virtual implant site.Postoperative CBCT was used to determine the actual implant site.Deviations were measured by matching the planning data with final CBCT image.Outcomes were the deviation measurements at implant platform,apex,and angle of placement.This research analyzed the effect of surgical methods,surgeons and implant site on the accuracy.Results: The mean deviation at implant platform and implant apex in the dynamic navigation group was 1.36±0.65 mm and 1.42±0.65 mm,while that in the static guided group was 1.22±0.70 mm and 1.33±0.73 mm,respectively.The angular deviation in dynamic and static guided group was 3.71±1.32 degrees and 4.34±2.22 degrees.None of the above differences between the two groups reached statistical significance.There were no significant accuracy differences among surgeons in dynamic group.No significant accuracy differences were found among implant site in dynamic group.In the anterior region,the deviation of implant apex in dynamic group was significantly higher than that of the static guided group(P= 0.028).In the area of premolars,there was no significant difference between the two groups.In the molars area,the angular deviation of implant in dynamic group was significantly lower than that of the static guided group(P= 0.003).Conclusions: Implant placement accuracy in using dynamic navigation appear to be the same to that of static guided in clinical practice.The surgeons with some implant experience and implant site had no significant effect on the accuracy in dynamic navigation.