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Updated: Jan 6, 2026

Designing CAD/CAM Surgical Guides for Maxillary Reconstruction Using an In-house Approach

Designing CAD/CAM Surgical Guides for Maxillary Reconstruction Using an In-house Approach

Published on: August 24, 2018

Accuracy of Maxillary Repositioning Using Customized Maxillary Bone-Dental-Supported Guides.

Yuki Mori¹, Kazuya Haraguchi², Daigo Yoshiga³

¹Department of Oral and Maxillofacial Disease Control, Division of Oral Medicine, Kyushu Dental University, Kitakyushu, Japan.

The Journal of Craniofacial Surgery

|September 24, 2025

Summary

This summary is machine-generated.

Customized bone-dental guides offer superior accuracy in maxillary repositioning compared to intermediate CAD/CAM splints for dentofacial deformities, improving surgical outcomes.

Keywords:

Accuracy CAD/CAM Le Fort I osteotomy intermediate splint maxillary repositioning

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Area of Science:

Oral and Maxillofacial Surgery
Orthodontics
Biomedical Engineering

Background:

Dentofacial deformities require precise surgical correction.
Accurate maxillary repositioning is crucial for functional and aesthetic outcomes.
Computer-aided design and computer-aided manufacturing (CAD/CAM) technologies have advanced surgical planning.

Purpose of the Study:

To compare the accuracy of maxillary repositioning using customized bone-dental-supported guides versus intermediate CAD/CAM splints.
To evaluate the effectiveness of surgical guides in transferring 3D simulation plans to actual surgical results.

Main Methods:

Retrospective cohort study involving patients with dentofacial deformities.
Computed tomography scans were analyzed before and 3 months after surgery.
Differences between planned and actual postoperative maxillary positions were measured for 3 landmarks using simulation software.
Two groups were compared: customized guides (n=22) and intermediate CAD/CAM splints (n=22).

Main Results:

Smaller discrepancies between planned and actual maxillary positions were observed in the customized guide group (Group A) across all 3 axes and 3 landmarks.
Intermediate CAD/CAM splints (Group B) showed significantly larger discrepancies on all 3 axes compared to customized guides.
Customized guides demonstrated higher accuracy in achieving the planned surgical outcome.

Conclusions:

Customized maxillary bone-dental-supported guides are more effective than intermediate CAD/CAM splints for accurate maxillary repositioning.
These guides enhance the precision of transferring 3D surgical simulations to clinical practice.
The findings suggest improved predictability and outcomes in orthognathic surgery using customized guides.