mandibular splitting in longitudinal direction sagittale split osteotomy
Conditions
Interventions
The sagittale split osteotomy is the worldwide standard to fracture the
mandible for orthognathic reasons since 1954. It is outlined in the next
paragraph: First the mandibular ramus and the mandibu
Sponsors
Medisch Universitair Ziekenhuis Maastricht
Eligibility
Age
18 Years to 99 Years
Inclusion criteria
Inclusion criteria: 18-50 years old Skeletal occlusion Angle class II or III needed a surgical correction by sagittal split osteotomy.
Exclusion criteria
Exclusion criteria: Contraindications for general anaesthesia Treated with bisphosphonates Uncontrolled diabetes Pregnancy Infection High risk of bleeding Revision surgery Patients under guardianship Syndromal patients such as patients with e.g. Apert syndrome, Crouzon syndrome, hemifacial microsomia, Goldenhaar syndrome, fibrous dysplasia
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The primary objective of the study is measurement of the required torque [Nm] that is needed to split the mandible and which is recorded during operation. Minor forces mean a beter prefabricated split and less chiseling by the surgeon. | — |
Secondary
| Measure | Time frame |
|---|---|
| Classification of the lingual fracture line by postoperative cone beam computed tomography into four classes: Fracturing according to Hunsuck (class I), fracturing according to Obwegeser (class II), fracturing along the mandibular canal (class III) and unfavourable fracture (bad split, class IV). Postoperative long-term sensibility of the lip, chin and oral mucosa, which is innervated by the inferior-alveolar nerve (Prick test, two point discrimination, thermal testing) | — |
Countries
Netherlands
Outcome results
None listed