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

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Periapical surgery using CAD/CAM guidance: preclinical results.

Harold M Pinsky¹, Guillaume Champleboux, David P Sarment

¹Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, Michigan 48109-1078, USA.

Journal of Endodontics

|January 30, 2007

Summary

This study introduces computer-aided surgical guides for endodontic apicoectomy, improving precision. Results show significantly greater accuracy in locating tooth apices compared to traditional freehand methods.

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Area of Science:

Endodontic Surgery
Dental Technology

Background:

Apicoectomy requires precise planning to avoid vital structures, traditionally limited by 2D radiography.
Existing surgical guidance technologies have not been applied to endodontics.

Purpose of the Study:

To introduce periapical surgical guidance using computed tomography (CT) and computer-aided design/computer-aided manufacturing (CAD/CAM).
To compare the accuracy of apical access using surgical guidance versus conventional freehand methods.

Main Methods:

Development and application of CT/CAD/CAM-based surgical guides for endodontic procedures.
In vitro comparison of apical access accuracy between guided surgery and freehand drilling.

Main Results:

Guided surgery achieved an average distance of 0.79 mm from the apex, compared to 2.27 mm for freehand drilling.

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Freehand drilling resulted in errors greater than 3 mm in 22% of cases, while guided surgery had no such errors.

Conclusions:

Periapical surgical guidance significantly enhances accuracy and consistency in endodontic surgery.
CT/CAD/CAM surgical guides offer improved presurgical 3D visualization and precise apical access.