In vivo assessment of implant placement accuracy using intraoral surface scans: A fully digital technical workflow

This study introduces a fully digital technique for measuring the accuracy of guided implant surgery without requiring postoperative CBCT scans.

The method relies solely on preoperative and postoperative intraoral surface scans and uses standard computer-aided design software to extract and compare the planned and actual implant positions. By aligning scans and analysing implant coordinates through custom-built software, the technique allows for precise calculation of both linear and angular deviations.

This approach eliminates additional radiation exposure, is non-invasive and is applicable to static, dynamic and robotic computer-assisted implant surgery workflows, offering a reproducible and clinically feasible alternative for in vivo accuracy validation.