Related Experiment Video
Updated: Aug 29, 2025
08:01
Designing CAD/CAM Surgical Guides for Maxillary Reconstruction Using an In-house Approach
Published on: August 24, 2018
9.1K
Assessment of Deviations of Implants Installed with Prototyped Surgical Guide and Conventional Guide: In Vitro Study
João Marcelo Meireles Rodrigues1, Pâmela Leticia Santos1, Gustavo Mendonça2
1Department of Health Sciences, Postgraduation Program in Implantology, School of Dentistry, University of Araraquara, UNIARA, Araraquara, Sao Paulo, Brazil.
European Journal of Dentistry
|September 5, 2022
Summary
Guided surgery techniques using dual tomography (DT) and model-based tomography (MT) significantly reduce implant placement deviations compared to conventional methods. Both DT and MT offer similar accuracy for dental implant positioning.
Area of Science:
- Dental Implantology
- Surgical Navigation
- Medical Imaging
Background:
- Accurate implant placement is crucial for successful dental restorations.
- Conventional implant placement can lead to significant angular and linear deviations.
- Guided surgery aims to improve the precision of implant positioning.
Purpose of the Study:
- To compare the accuracy of implant placement using dual tomography (DT) and model-based tomography (MT) guided surgery techniques against a conventional non-guided approach.
- To quantify angular and linear deviations in implant positioning for each technique.
Main Methods:
- Implants were placed in partially edentulous maxillary mannequins using three methods: conventional technique (Group C), dual tomography guided surgery (Group DT), and model-based tomography guided surgery (Group MT).
- Each group involved 20 implant placements.
- Post-placement, computed tomography (CT) was used to measure linear and angular deviations from the initial surgical plan.
Main Results:
- The conventional technique (Group C) exhibited significantly higher mean angular deviations (4.61°) compared to DT (2.13°) and MT (1.87°) groups (p ≤ 0.001).
- Linear deviations in the crown, central, and apical regions were also greatest in Group C (2.17°, 2.2°, and 2.34° respectively) compared to DT and MT groups (p ≤ 0.007).
- No statistically significant difference in accuracy was found between the DT and MT guided surgery techniques.
Conclusions:
- Dual tomography (DT) and model-based tomography (MT) guided surgery techniques provide superior accuracy in implant placement compared to the conventional non-guided method.
- Both DT and MT guided surgery techniques demonstrate comparable precision, offering reliable alternatives for improving implant positioning accuracy.
