Related Experiment Video
Updated: Jun 6, 2025
09:10
Digital Hybrid Model Preparation for Virtual Planning of Reconstructive Dentoalveolar Surgical Procedures
Published on: August 5, 2021
1.7K
Digitization of Dentate and Edentulous Maxillectomy and Mandibulectomy Defects with Three Different Intraoral
Mariko Hattori1, Sandra Stadler2, Yuka I Sumita1,3
1Department of Advanced Prosthodontics, Graduate School of Medical and Dental Sciences, Institute of Science Tokyo, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8549, Japan.
Journal of Clinical Medicine
|November 27, 2024
Summary
Intraoral scanners (IOSs) can accurately digitize jaw defects, comparable to conventional methods. This supports using digital technology for maxillofacial prosthetics in patients with maxillectomy or mandibulectomy defects.
Area of Science:
- Oral and Maxillofacial Surgery
- Dental Technology
- Prosthodontics
Background:
- Accurate digitization of maxillofacial defects is crucial for prosthetic rehabilitation.
- Conventional impression techniques can be cumbersome and time-consuming.
- Intraoral scanners (IOSs) offer a potential alternative for digital data acquisition.
Purpose of the Study:
- To compare the trueness and precision of three intraoral scanners (IOSs) against conventional impressions for digitizing artificial maxillectomy and mandibulectomy defects.
- To evaluate IOS performance on both dentate and edentulous defect models.
Main Methods:
- Four artificial jaw defect models (dentate/edentulous maxillectomy and mandibulectomy) were used.
- Scans from three IOSs (CEREC AC Omnicam, True Definition, cara TRIOS 3) were compared to a reference scan.
- Conventional polysiloxane impressions were taken, digitized, and analyzed alongside IOS data using 3D inspection software.
Main Results:
- Significant differences in trueness and precision were found across all data acquisition methods (p < 0.0001).
- Intraoral scanners achieved average mean trueness ranging from 32.17 to 204.43 µm.
- Conventional impressions (32.07–64.85 µm) and the cara TRIOS 3 demonstrated the highest precision, with no significant difference between them.
Conclusions:
- Intraoral scanners can achieve satisfactory accuracy for digitizing defective jaws, even in edentulous models.
- This validates the use of IOSs for maxillofacial defect patients.
- Digital technology holds promise for advancing maxillofacial prosthetics.
