The purpose of this prospective study was to evaluate the temporomandibular joint (TMJ) morphology, the disk position, and the TMJ symptoms before and after surgical-orthodontic correction of skeletal class III malocclusion.Eleven adult patients were recruited to participate in this longitudinal study. Each patient received presurgical and postsurgical orthodontic treatment with fixed appliances. Six patients were corrected exclusively through mandibular setback, whereas 5 received combined mandibular setback and maxillary advancement. All patients were investigated before and 2 years after treatment through (1) clinical examination, (2) magnetic resonance imaging, and (3) Computerized axiography (CA).The incidence of clinical signs and symptoms was reduced 2 years after surgical-orthodontic treatment, the condyle-disk relationship and TMJ appearance at magnetic resonance imaging were unchanged, and CA showed a significant improvement of TMJ border movements.Mandibular setback surgery does not appear to alter the condyle-disk relationship, whereas correction of class III malocclusion seems to improve clinical and CA signs of TMJ function. Further controls and more long-term evaluation of these patients are necessary to assess the maintenance of these improvements in time.

Clinical and instrumental evaluation of the temporomandibular joint before and after surgical correction of asymptomatic skeletal class III patients.

RAMIERI, Guglielmo;PIANCINO, MARIA GRAZIA;FRONGIA, GIANLUIGI;Gerbino G;DEBERNARDI, Cesare Lorenzo;BRACCO, Pietro
2011-01-01

Abstract

The purpose of this prospective study was to evaluate the temporomandibular joint (TMJ) morphology, the disk position, and the TMJ symptoms before and after surgical-orthodontic correction of skeletal class III malocclusion.Eleven adult patients were recruited to participate in this longitudinal study. Each patient received presurgical and postsurgical orthodontic treatment with fixed appliances. Six patients were corrected exclusively through mandibular setback, whereas 5 received combined mandibular setback and maxillary advancement. All patients were investigated before and 2 years after treatment through (1) clinical examination, (2) magnetic resonance imaging, and (3) Computerized axiography (CA).The incidence of clinical signs and symptoms was reduced 2 years after surgical-orthodontic treatment, the condyle-disk relationship and TMJ appearance at magnetic resonance imaging were unchanged, and CA showed a significant improvement of TMJ border movements.Mandibular setback surgery does not appear to alter the condyle-disk relationship, whereas correction of class III malocclusion seems to improve clinical and CA signs of TMJ function. Further controls and more long-term evaluation of these patients are necessary to assess the maintenance of these improvements in time.
2011
22
527
531
http://ovidsp.tx.ovid.com/sp-3.4.1a/ovidweb.cgi?QS2=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
Masticatory function; orthognathic surgery; magnetic resonance imaging; axiography
Ramieri G; Piancino MG; Frongia G; Gerbino G; Fontana PA; Debernardi C; Bracco P.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/85671
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