Soft Tissue Prediction in Orthognathic Surgery by Making Anatomically Accurate Virtual Model

Condition(s) studied

Study summary

The role of orthognathic surgery in the correction of dento-skeletal dysmorphies, whether they are Class II or Class III or asymmetries, is to improve both the function and aesthetic appearance of thepatient. Both aspects are equally important to achieve optimal results.

When the surgeon plans the surgery, he or she must therefore take into account the effects that bone displacements will have at the level of the soft tissues directly involved in the surgery, such as the maxilla and mandible. Traditionally, such surgery consists of an orthodontic presurgical phase1,2

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Eligibility

Primary outcome measure(s)

• primary outcomes — 18 months
  Implementation of a virtual three-dimensional model of the face already provided for care procedure that is anatomically accurate in predicting soft tissue displacements following orthognathic surgery. This model will include the biomechanical characteristics of the facial muscles and skin. In particular, the sensitivities of different areas of the face (nose, cheeks, and upper lip) that are particularly important in orthognathic surgery will be evaluated in response to variation in the biomechanical properties of the muscles (Poisson's coefficient and Young's modulus).

Trial sites (1)

More IRCCS Azienda Ospedaliero-Universitaria di Bologna trials in Italy