Changes in ramus height and mandibular movement and function after conservative treatment for condylar process fractures.

• MURAKAMI Kazuhiro

  Department of Oral and Maxillofacial Surgery, Nara Medical University

• YAMAMOTO Kazuhiko

  Department of Oral and Maxillofacial Surgery, Nara Medical University

• SUGIURA Tsutomu

  Department of Oral and Maxillofacial Surgery, Nara Medical University

• TAKIOKA Wataru

  Department of Oral and Maxillofacial Surgery, Nara Medical University

• KOUNO Tarou

  Department of Oral and Maxillofacial Surgery, Nara Medical University

• ENDOH Takehiro

  Department of Oral and Maxillofacial Surgery, Nara Medical University

• NAGAO Yutaka

  Department of Oral and Maxillofacial Surgery, Nara Medical University

• KIRITA Tadaaki

  Department of Oral and Maxillofacial Surgery, Nara Medical University

Bibliographic Information

Other Title

• 関節突起骨折に対する保存療法後の下顎枝高と下顎運動機能の経時的変化

Abstract

Changes in ramus height and mandibular movement and function were evaluated in patients with unilateral condylar process fractures who received conservative treatment.<BR>Forty-five patients (27 men, 18 women) with a mean age of 36.3 years (range, 16-78 years) were studied. The changes in ramus height as compared with that at the time of injury were analyzed 3 months and 6 months after injury according to the level (Lindahl's classification) and type (MacLennan's classification) of fracture. Assessment of mandibular movement and function included maximum mouth opening, lateral mandibular movement, and deviation on mouth opening, evaluated at each state. The statistical analysis of the data was performed by one-way ANOVA and unpaired t-tests. Occlusion and TMJ disorders were also evaluated at each stage.<BR>Shortening of ramus height was remarkable in the fractures of the neck and with displacement and dislocation as compared with other levels and types of fractures. Maximum mouth opening of more than 40 mm was obtained in all levels and types of fractures 3 and 6 months after injury. Lateral mandibular movement towards the non-fracture side was slightly restricted 3 months after injury, but recovered at 6 months. There were no significant differences according to level or type of fractures at this time. Deviation on mouth opening was associated with fractures of the neck and those with displacement and dislocation. All patients had good occlusion, and only a few had TMJ disorders.<BR>Conservative treatment for unilateral condylar process fractures resulted in the shortening of ramus height, especially in fractures of the neck and those with displacement and dislocation. However, mandibular movement and function were satisfactory, without restriction of maximum mouth opening or lateral mandibular movement and only with deviation on mouth opening.

Journal

• Japanese Journal of Oral and Maxillofacial Surgery

  Japanese Journal of Oral and Maxillofacial Surgery 48 (9), 446-454, 2002

  Japanese Society of Oral and Maxillofacial Surgeons

Keywords

• fracture of condylar process
• mandibular ramus height
• conservative treatment
• function of mandibular movement

Details

• CRID: 1390282681504264832
• NII Article ID: 10010693230
• NII Book ID: AN00189163
• DOI: 10.5794/jjoms.48.446
• ISSN: 21861579
• ISSN: 00215163
• Web Site: https://search.jamas.or.jp/link/ui/2003074701
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed