Facial soft-tissue simulation for corrective jaw surgery

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This interventional project uses preoperative and postoperative CT scans together with a software-based VLASTIC test to model soft-tissue changes after isolated mandibular, maxillary, or combined maxillo-mandibular orthognathic surgery. Surgeons will apply three-dimensional bone displacement data to generate soft-tissue simulations and then compare those predictions with actual postoperative CT-derived anatomy. The study enrolls adults treated at CH Annecy Genevois who can provide informed consent and have usable CT scans before and after surgery. The goal is to improve simulation accuracy so patients and clinicians can better anticipate postoperative facial appearance.

Why it matters

Who can join: the full rules

Inclusion Criteria:

* Patient over 18 ;
* Patients who have been informed of the study and who have freely given their informed consent to participate in the study;
* Patient undergoing isolated mandibular or maxillary orthognathic surgery, or maxillo-mandibular surgery with or without genioplasty for any indication (occlusal disorder, sleep apnoea syndrome, functional joint disorder, etc.);
* Patient covered by a French social security scheme

Exclusion Criteria:

* Patient with maxillary disjunction ;
* Patients with facial malformations;
* Pregnant or breast-feeding patient;
* Patient under guardianship;
* Patients who do not understand French;
* Patients under court protection
* No pre- or postoperative CT scan or CT scan that cannot be used
* Surgery, trauma, progressive infection or cosmetic injection on the face after orthognathic surgery and before the postoperative scan

Where it's running

• CH Annecy Genevois
  Annecy, France Recruiting

Study contacts

• Principal investigator: Georges BETTEGA — Centre Hospitalier Annecy Genevois
• Study coordinator: Marion GHIDI
• Email: mghidi@ch-annecygenevois.fr
• Phone: +33450637031

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How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.