Objectives: The aim of the study was to detect the changes in 3D mandibular motion after orthognathic surgery for skeletal Class III malocclusion. Method: Using a 3D motion analyzer, free mandibular border movements were recorded in nine patients successfully treated for skeletal Class III malocclusion and in nine patients scheduled for orthognathic surgery. Data were compared using Mann–Whitney non-parametric U-test. Results: The results showed no differences between the groups in the total amount of mouth opening, protrusion, and in lateral excursions, but the percentage of mandibular movement explained by condylar translation was significantly increased after surgery (20% vs. 23.6%). During opening, the post-surgery patients showed a more symmetrical mandibular interincisal point and condylar path than pre-surgery patients (p < 0.01). Discussion: Patients treated with orthognathic surgery for skeletal Class III malocclusion recover a good and symmetric temporomandibular joint function.

Kinematic analysis of mandibular motion before and after orthognathic surgery for skeletal Class III malocclusion : a pilot study / A. Ugolini, A. Mapelli, M. Segù, D. Galante, F.V. Sidequersky, C. Sforza. - In: CRANIO. - ISSN 0886-9634. - 35(2017 Mar), pp. 94-100.

Kinematic analysis of mandibular motion before and after orthognathic surgery for skeletal Class III malocclusion : a pilot study

A. Ugolini
Primo
;
A. Mapelli
Secondo
;
D. Galante;F.V. Sidequersky
Penultimo
;
C. Sforza
Ultimo
2017

Abstract

Objectives: The aim of the study was to detect the changes in 3D mandibular motion after orthognathic surgery for skeletal Class III malocclusion. Method: Using a 3D motion analyzer, free mandibular border movements were recorded in nine patients successfully treated for skeletal Class III malocclusion and in nine patients scheduled for orthognathic surgery. Data were compared using Mann–Whitney non-parametric U-test. Results: The results showed no differences between the groups in the total amount of mouth opening, protrusion, and in lateral excursions, but the percentage of mandibular movement explained by condylar translation was significantly increased after surgery (20% vs. 23.6%). During opening, the post-surgery patients showed a more symmetrical mandibular interincisal point and condylar path than pre-surgery patients (p < 0.01). Discussion: Patients treated with orthognathic surgery for skeletal Class III malocclusion recover a good and symmetric temporomandibular joint function.
Kinematics; 3D; Motion analysis; Surgery; Skeletal class III
Settore BIO/16 - Anatomia Umana
Settore MED/28 - Malattie Odontostomatologiche
6-apr-2016
Article (author)
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/378097
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