Tooth-Implant digital guide improves implantation accuracy in patients with periodontitis

To investigate the accuracy of Tooth-Implant digital guide-assisted implantation, explore the influence of periodontitis on the accuracy of the digital guide, and evaluate the effect of the residual abutment looseness after periodontitis treatment on the implant accuracy of the digital guide.

In this retrospective clinical study, 45 patients who received dental implantation at the Department of Periodontology, Beijing Stomatological Hospital affiliated with Capital Medical University, were selected and grouped. Group A consisted of non-periodontitis patients (n=15) who underwent Tooth-Implant digital guide-assisted implantation surgery. Group B was composed of periodontitis patients (n=15) who received Tooth-Implant digital guide-assisted implantation surgery. Group C included periodontitis patients (n=15) with freehand implantation. Three dental landmarks were identified to compare the planned implant position generated by the Tooth-Implant digital guide before implantation and the actual implant position in the same patient. Differences in implant depth, angle, shoulder and apex were analyzed before and after the implantation.

There were statistical differences in implant depth, angle, shoulder, and apex between group B and group C. While statistical significance was found only in the implant angle and depth between group A and group B, not in the implant shoulder or apex. In periodontitis patients treated by Tooth-Implant digital guide-assisted implantation, significant differences were identified in implant depth and shoulder between non-abutment looseness and abutment looseness subgroups, but not in implant angle and apex. Under the digital guide-assisted implantation, no significant differences were found in implant depth, angle, shoulder and apex at different jaw positions, but at different tooth positions, significant differences were identified in implant angle and apex, not in implant depth and shoulder. The accuracy of Tooth-Implant digital guide-assisted implantation was consistent with previous data.

The Tooth-Implant digital guide-assisted implantation has reliable implant accuracy that outperforms freehand implantation. Periodontitis is a factor affecting the accuracy of digital guide in dental implant placement, and this could be due to the looseness of residual abutments after systematic periodontal treatment. Different jaw positions have no impact on the accuracy of digital guide-assisted implantation, but different tooth positions have an impact on the accuracy of implant placement using a digital guide.