Journal of Oral and Maxillofacial Surgery
Volume 65, Issue 1 , Pages 34-39, January 2007

Bite Force and Maxillofacial Morphology in Patients With Duchenne-Type Muscular Dystrophy

  • Koichiro Ueki, DDS, PhD

      Affiliations

    • Clinical Fellow, Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Kanazawa University, Kanazawa, Japan.
    • Corresponding Author InformationAddress correspondence and reprint requests to Dr Ueki: Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Kanazawa University, 13-1 Takaramachi, Kanazawa 920-8641, Japan
    • ,
  • Kiyomasa Nakagawa, DDS, PhD

      Affiliations

    • Associate Professor, Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Kanazawa University, Kanazawa, Japan.
    • ,
  • Etsuhide Yamamoto, DDS, PhD

      Affiliations

    • Chief Professor, Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Kanazawa University, Kanazawa, Japan.

Purpose

The purpose of this study is to evaluate maxillofacial morphology and bite force in patients with severe Duchenne-type myodystrophy.

Patients and Methods

The subjects included 24 men (average age, 21.5 years; range, 17 to 30 years) with Duchenne-type muscular dystrophy receiving treatment in National Ioh Hospital. Lateral and axial cephalograms were used to assess the morphology in this study. The maximum bite force on the first molar and the maximum mouth opening distance were measured.

Results

The anterior open bite was visualized in most patients on the lateral cephalogram. The upper and lower arch lengths in the patients were significantly smaller than those in the controls (P < .05). In contrast, the upper and lower arch widths in the patients were significantly larger than those in the controls (P < .05). The maximum bite force and maximum mouth opening distance in the patients were significantly lower than those in the controls (P < .05).

Conclusion

These results appear to be very useful for improving the care and treatment of patients with Duchenne-type muscular dystrophy.

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PII: S0278-2391(06)01400-5

doi:10.1016/j.joms.2005.11.108

Journal of Oral and Maxillofacial Surgery
Volume 65, Issue 1 , Pages 34-39, January 2007

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