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Quintessence Publishing: Journals: ORTHODONTICS
ORTHODONTICS
The Art and Practice of Dentofacial Enhancement

Formerly World Journal of Orthodontics

Edited by
Rafi Romano, DMD, MSc (Editor-in-Chief)

ISSN 2160-2999 (print) / ISSN 2160-3006 (online)

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Publication:
Spring 2004
Volume 5 , Issue 1

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Positional and Morphologic Changes of the Mandibular Condyle After Mandibular Distraction Osteogenesis in Skeletal Class II Patients

Yuko Azumi, DDS/Junji Sugawara, DDS, PhD/Ichiro Takahashi, DDS, PhD/Hideo Mitani, DDS, PhD/Hiroshi Nagasaka, DDS, PhD/Hiroshi Kawamura, DDS, PhD

Pages: 3239
PMID: 15615140

Aim: Mandibular distraction osteogenesis has been used to correct the skeletal problems in patients with severe mandibular deficiency. Short-term effects of mandibular distraction osteogenesis on condylar position, condylar morphology, and temporomandibular joint symptoms in patients with severe skeletal Class II malocclusions were evaluated. Material and Methods: The records of 13 patients who had undergone bilateral mandibular lengthening and/or midline mandibular widening were analyzed. Pre- and postoperative positional changes of the mandibular condyle in the glenoid fossa, the axial rotation of the condylar head, and the temporomandibular joint symptoms were evaluated. Results: Most of the condyles were displaced in an upward and backward direction in the glenoid fossa; the amount correlated with the amount of mandibular lengthening. Resorption was observed in 20% of condyles; the incidence of the resorption correlated with incidence of preoperative articular disc displacement and with the amount of condylar displacement. Conclusion: Distraction protocols should be performed with particular attention when patients with articular disc displacement require a large amount of distraction. World J Orthod 2004;5:3239.

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