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Accuracy of the modified tooth-supported 3D printing surgical guides based on CT, CBCT, and intraoral scanning in maxillofacial region: A comparison study. | LitMetric

Accuracy of the modified tooth-supported 3D printing surgical guides based on CT, CBCT, and intraoral scanning in maxillofacial region: A comparison study.

J Stomatol Oral Maxillofac Surg

Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, National Center for Stomatology & National Clinical Research Center for Oral Diseases, Beijing & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing 100081, China. Electronic address:

Published: October 2024

AI Article Synopsis

  • - The study focused on enhancing tooth-supported surgical guides for tumor resection, finding they are more accurate than bone-supported guides in the maxillofacial region.
  • - Researchers used virtual surgical planning to analyze the precision of these guides in 60 patients, measuring discrepancies between planned and actual osteotomy planes.
  • - Results showed that tooth-supported guides had lower mean deviations in osteotomy accuracy (1.39 mm and 4.30°) compared to bone-supported guides (2.16 mm and 4.95°), indicating their effectiveness in minimizing soft tissue removal during surgery.

Article Abstract

Background: Tooth-supported surgical guides have demonstrated superior accuracy compared with bone-supported guides. This study aimed to modify the fabrication of tooth-supported guides for compatibility with tumor resection procedures and investigate their accuracy.

Methods: Patients with tumors who underwent osteotomy with the assistance of modified tooth- or bone-supported surgical guides were included. Virtual surgical planning (VSP) was employed to align three dimensional (3D) models extracted from intraoperative computed tomography (CT) images. The distances and angular deviations between the actual osteotomy plane and preoperative plane were recorded. A comparative analysis of osteotomy discrepancies between tooth-supported and bone-supported guides, as well as among tooth-supported guides based on CT, cone-beam CT (CBCT), or intraoral scanner (IOS) was conducted. The factors influencing the precision of the guides were analyzed.

Results: Sixty patients with 81 resection planes were included in this study. In the tooth-supported group, the mean deviations in the osteotomy plane and angle were 1.39 mm and 4.30°, respectively, whereas those of the bone-supported group were 2.16 mm and 4.95°. In the tooth-supported isotype guide groups, the mean deviations of the osteotomy plane were 1.39 mm, 1.47 mm, 1.23 mm across CT, CBCT, and IOS, respectively. The accuracy of the modified tooth-supported guides remained consistent regardless of number and position of the teeth supporting the guide and location of the osteotomy lines.

Conclusions: The findings indicate that the modified tooth-supported surgical guides demonstrated high accuracy in the maxillofacial region, contributing to a reduction in the amount of surgically detached soft tissue.

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Source
http://dx.doi.org/10.1016/j.jormas.2024.101853DOI Listing

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