June 2019 – Computer Assisted Implant Surgery

The Accuracy of Static vs. Dynamic Computer-assisted Implant Surgery in Single Tooth Space

Kaewsiri D, Panmekiate S, et al.
Clin Oral Implants Res. 2019 May 6

The purpose of this RCT was to compare the accuracy of implant placement between static and dynamic computer-assisted implant surgery (CAIS) systems in single tooth space.  A total of 60 patients in need of a single implant were randomly assigned to two CAIS groups (Static n = 30, Dynamic n = 30) and implants were placed by one surgeon. Preoperative CBCT was transferred to implant planning software to plan the optimal implant position. Implants were placed using either stereolithographic guide template (Static CAIS) or implant navigation system (Dynamic CAIS). Postoperative CBCT was imported to implant planning software, and deviation analysis with the planned position was performed. Primary outcomes were the deviation measurements at implant platform, apex, and angle of placement. Secondary outcome was the distribution of the implant deviation into each 3D direction.

The mean deviation at implant platform and implant apex in the static CAIS group was 0.97 mm and 1.28 mm, while that in the dynamic CAIS group was 1.05 mm and 1.29 mm, respectively. The angular deviation in static and dynamic CAIS group was 2.84  degrees and 3.06 degrees. None of the above differences between the two groups reached statistical significance. The deviation of implants toward the mesial direction in dynamic CAIS group was significantly higher than that of the static CAIS. The investigators concluded that implant placement accuracy in single tooth space using dynamic CAIS appear to be the same to that of static CAIS.