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SURGICAL CORRECTION OF CLASS II OPENBITE WITH TMD ; Report of Cases

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Abstract

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#ÃÊ·Ï#
Purpose : This is to evaulate the efficacy of orthognathic surgical aids to imporve the
painful TMJ in Class II open-bite deformites.
Cases : Four patients who had been sufferred from temporo-mandibular disorders with
open-bite retrognathic deformities underwent orthognathic surgeries. The presurgical
orthodontic treatment and conservative management for temporomandibular disorders
could not be continued due to progressive pain loading on TMJs and muscle tenderness.
Bilateral ramus oseotomy with semirigid internal fixation were followed for 2 years by
radiologic changes including MRI, bone scan, clinical examination of jaw opening.
pain(VAS) and occlusal changes.
Results : Open-bite deformites with painful TMJ showed DJD findings without
reduction of disc and hot spots on bone scans. The surgeries helped pain reduction to
VAS 0.5 from 8.0 and improved jaw opening to 45 mm. Hot spots of TMJ were
decreased or disappeared in one year. There were no signs or evidence of
openbite-recurrence.
Conclusion : In the standpoint of sequential management of TMD, the orthognathic
surgery is a good option and modality to treat the class II openbite deformities with
temporomandibular disorders with temporomandibular disorders which are not respond to
conservative management during orthodontic treatment.

Å°¿öµå

TMD; Open-bite; Class II Deformity;

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KCI
KoreaMed