Orthognathic Surgery
Conditions
Brief summary
Orthognathic surgery consists of rebalancing the position of the jaws, taking into account functional criteria (tooth engagement, tooth/lip ratio, breathing, etc.) and aesthetic criteria. It has become much more accurate in recent years thanks to the advent of osteosynthesis plates and the contribution of three-dimensional imaging. Three-dimensional imaging makes it possible to simulate fairly accurately the surgical procedures and bone displacements required. However, the effect of these bone displacements on the soft tissues (skin, subcutaneous tissue, muscles) does not make it possible, with today's digital tools, to simulate the final aesthetic result and in particular to anticipate the sometimes significant postoperative changes to the face. Many patients are worried about these post-operative morphological changes and would like to have a precise idea of how they will look after surgery. Being able to offer them, before surgery, a visual solution simulating the final aesthetic appearance would be essential in this respect. The aim of the study is to validate the predictions provided by the digital face model on a series of patients scheduled for orthognathic surgery by comparing the simulation of the morphological result of the operation, provided by our algorithm (SPOC), with the actual result assessed on a scan taken 6 months after the operation.
Interventions
OTHERCT scan
6 months postop CT scan
OTHERVLASTIC test
Measurement of the elasticity of the facial integument using the VLASTIC cutometer (Volume-based Light Aspiration device for in vivo Soft Tissue Characterization)
Sponsors
University Grenoble Alps
Centre Hospitalier Annecy Genevois
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
OTHER
Masking
NONE
Intervention model description
A non-controlled, non-randomised interventional cohort study of patients undergoing planned orthognathic surgery, designed to evaluate the simulation of changes to the soft parts of the face during surgery, using the SPOC simulation model.
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
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
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Validation of the predictions provided by the digital face model (SPOC). | 6 months after orthganthic surgery | Correlation of morphological result simulation of surgery, provided by our algorithm (SPOC), with the actual result assessed on a scan taken 6 months after the surgery. |
Countries
France
Contacts
Primary ContactMarion GHIDI
Backup ContactMarion BEUCHER
Outcome results
None listed