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A Postoperative Evaluation Guideline for Computer-Assisted Reconstruction of the Mandible
Published on: January 28, 2020
Validity of a manual soft tissue profile prediction method following mandibular setback osteotomy
1Department of Orthodontics, School of Dentistry, Aristotle University of Thessaloniki, Thessaloniki, Greece.
European Journal of Dentistry
|February 13, 2009
Summary
The manual cephalometric method for predicting soft tissue profiles after mandibular setback surgery resulted in more convex profiles than actual outcomes. Both manual and computerized methods aid patient communication.
Area of Science:
- Orthodontics and Maxillofacial Surgery
- Cephalometric Analysis
Background:
- Predicting post-operative soft tissue profiles is crucial for patients undergoing mandibular setback surgery.
- Evaluating the accuracy of prediction methods is essential for surgical planning and patient satisfaction.
Purpose of the Study:
- To assess the validity of a manual cephalometric method for predicting post-operative soft tissue profiles.
- To compare the manual method's predictions against a computerized method (Dentofacial Planner).
Main Methods:
- Lateral cephalograms from 18 adults with mandibular prognathism were analyzed.
- Manual prediction tracings were compared to actual post-operative cephalograms.
- Computerized predictions using Dentofacial Planner software were also evaluated using the PORDIOS system and t-tests.
Main Results:
- The manual method overestimated soft tissue convexity, leading to more prominent upper lips and increased lip thickness.
- Compared to the computerized method, the manual approach resulted in a more anterior upper lip and increased lower anterior facial height.
Conclusions:
- Cephalometric simulation of post-operative soft tissue profiles has inherent limitations.
- Both manual and computerized prediction methods serve as valuable tools for patient communication in orthodontic-surgical management.
