Related Experiment Video
Updated: May 7, 2026
Dynamic Navigation for Dental Implant Placement
Published on: September 13, 2022
Direct and continuous localization of anatomical landmarks for image-guided orthognathic surgery
Seong-Ha Kim1, Dae-Seung Kim, Kyung-Hoe Huh
1Department of Oral and Maxillofacial Radiology, BK21, and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Korea.
Objective:
The accuracy and consistency of a new image-guided method for orthognathic surgery using direct and continuous landmark localization was compared with that of a conventional method.
Study Design:
Maxillary and mandibular dental casts mounted on an articulator were used as a surgery phantom. We planned six types of surgeries including translations and rotations. The sequential positions of the landmarks determined before surgery could be traced and the difference between planned and actual positions of the landmarks could be visualized during surgery. The final deviation errors were determined with and without applying the pointing instrument to the landmarks.
Results:
The mean RMS accuracy of 0.47 ± 0.22 mm by direct localization was significantly higher than that of 1.06 ± 0.49 mm by the manual localization. There were no significant differences in accuracies for surgeries using the direct localization method.
Conclusion:
The direct and continuous localization method showed higher accuracy and consistency than conventional manual localization in all phantom surgeries.
