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Publication:
International Journal of Adult Orthodontics and Orthognathic Surgery

Year 1998
Volume 13 , Issue 2

Back
Pages: 145 - 151

Relationship between disc displacement and morphologic features of skeletal Class III malocclusion

Muto/Kawakami/Kanazawa/Ishii/Uga/Yokoyama/Takeuchi

The present study assessed the relationship between disc displacement and facial morphologic features in 48 patients with skeletal Class III malocclusion. Clinical examination, standardized lateral oblique temporomandibular joint radiographs, and cephalographs were used to investigate this relationship. Disc displacement was evaluated by the presence of joint sounds (clicking and crepitation) or restricted condylar translation at maximal mouth opening. Thirty-two patients with signs of disc displacement were compared with 16 patients without signs of disc displacement. Results showed that patients with signs of disc displacement had a significantly larger gonial angle and/or SN-MP of the mandible. Thus, morphologic features of patients with skeletal Class III malocclusion may represent a risk factor for the development of disc displacement.

 

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