OBJECTIVE: The aim of the study was to analyze the characteristics and changes in mandibular condylar motion in patients with skeletal Class III malocclusion. METHODS: Using a 3D motion analyzer, mandibular movements were recorded in 9 patients with skeletal Class III malocclusion and 22 control subjects with Angle Class I jaw relationships. RESULTS: Class III patients had a similar interincisor point displacement but a significantly reduced displacement of both condyles on the sagittal and frontal planes, with smaller translation paths than control subjects (right -9.4 mm; left -4.8 mm). The overall condylar rotation component was larger in Class III patients (right +8.8%; left +7.3%). The largest inter-group significant differences were observed in the first 10% of mouth opening, in which Class III patients had a larger rotating component than control subjects (+20%, p < 0.01). CONCLUSIONS: Condylar motion was reduced in skeletal Class III patients, in particular in the translational path.

Three-dimensional mandibular motion in skeletal Class III patients / A. Ugolini, A. Mapelli, M. Segù, M. Zago, M. Codari, C. Sforza. - In: CRANIO. - ISSN 0886-9634. - 36:2(2017), pp. 113-120.

Three-dimensional mandibular motion in skeletal Class III patients

A. Ugolini
Primo
;
A. Mapelli
Secondo
;
M. Zago;M. Codari
Penultimo
;
C. Sforza
Ultimo
2017

Abstract

OBJECTIVE: The aim of the study was to analyze the characteristics and changes in mandibular condylar motion in patients with skeletal Class III malocclusion. METHODS: Using a 3D motion analyzer, mandibular movements were recorded in 9 patients with skeletal Class III malocclusion and 22 control subjects with Angle Class I jaw relationships. RESULTS: Class III patients had a similar interincisor point displacement but a significantly reduced displacement of both condyles on the sagittal and frontal planes, with smaller translation paths than control subjects (right -9.4 mm; left -4.8 mm). The overall condylar rotation component was larger in Class III patients (right +8.8%; left +7.3%). The largest inter-group significant differences were observed in the first 10% of mouth opening, in which Class III patients had a larger rotating component than control subjects (+20%, p < 0.01). CONCLUSIONS: Condylar motion was reduced in skeletal Class III patients, in particular in the translational path.
3D; Kinematics; TMJ; motion analysis; skeletal class III
Settore BIO/16 - Anatomia Umana
Settore MED/28 - Malattie Odontostomatologiche
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/486587
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