An alternative radiation-free method for assessing the accuracy of robotic computer-assisted implant surgery: a cross-sectional study.

Objectives This study aimed to assess the accuracy of implant placement performed using robotic computer-assisted implant surgery (r-CAIS) by comparing postoperative measurements obtained via intraoral scanning (IOS) with those derived from cone-beam computed tomography (CBCT).Methods The study employed a cross-sectional design. All patients received a preoperative CBCT and IOS for surgical planning and registration. All the surgeries were performed using r-CAIS. Postoperative CBCT and IOS datasets were acquired for each patient and superimposed on the preoperative datasets to assess deviations between planned and actual implant positions. Paired t-tests were used to analyze differences between the two assessment modalities, with statistical significance defined as P 0.05, respectively). ICCs for global coronal, global apical, and angular deviations were 0.911, 0.886, and 0.856, respectively. Bland-Altman analyses further confirmed excellent agreement between the two methods.Conclusions Both IOS and CBCT methods demonstrated comparable accuracy and good agreement in r-CAIS.Clinical Significance Postoperative IOS method may serve as a reliable and radiation-free alternative to CBCT for assessing implant placement accuracy in r-CAIS in patients with a single missing tooth or two consecutive missing teeth. In future, multicenter randomized controlled trials with larger sample sizes are warranted to further validate these findings.