Chinese Journal of Tissue Engineering Research ›› 2011, Vol. 15 ›› Issue (46): 8676-8680.doi: 10.3969/j.issn.1673-8225.2011.46.030

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Correlation between masticatory muscle ultrasound data and dental arch morphology of young males

Yu Ying-zi1, Mi Cong-bo2, Zhao Ya-ping3, Zu Qing2, Liang Qi-bin1, Lin cheng1, Wang Qiao-yun1   

  1. 1Department of Stomatology, the 474th Hospitol of Chinese PLA, Urumqi 830013, Xinjiang Uygur Autonomous Region, China;  2Department of Orthodontics, First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China; 3Department of Special Diagnosis, the 474th Hospital of Chinese PLA, Urumqi  830013, China
  • Received:2011-07-20 Revised:2011-09-21 Online:2011-11-12 Published:2011-11-12
  • Contact: Mi Cong-bo, Chief physician, Master's supervisor, Department of Orthodontics, First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China mi670105@sina.com
  • About author:Yu Ying-zi, Associate chief physician,Department of Stomatology, the 474th Hospitol of Chinese PLA, Urumqi 830013, Xinjiang Uygur Autonomous Region, China 723976151@qq.com
  • Supported by:

    the Medical Science and Technology Program of Lanzhou Military Command in 2011, No. CLZ11JB37*

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Abstract:

BACKGROUND: Various studies have shown the association between masticatory muscle morphology and craniofacial morphology. However, the interaction between masticatory muscle morphology and dental arch form remains poorly understood.
OBJECTIVE: To investigate the influence of masticatory muscle morphology and function on dental arch forms and the underlying mechanisms.
METHODS: A total of 69 males with normal occlusion, aged 23.6 years (mean 18-28 years) were included in this study. Ultrasound scanning was used to measure the perimeter, area, width, length, mean thickness and maximal thickness of masseter muscle and the mean thickness and maximal thickness of anterior temporal muscle. All items were measured under mandibular postural position. The arch forms were measured. Correlation analysis was done between the ultrasound data and dental arch form.
RESULTS AND CONCLUSION: There was a positive correlation between the cross-section area of masseter muscle and the length of maxillary antero-middle dental arch, between the maximal thickness of masseter muscle and the width of mandibular middle dental arch and the perimeter of maxillary dental arch (P < 0.05). There was a negative correlation between the thickness of anterior temporal muscle and the length of maxillary anterior and antero-middle dental arch (P < 0.05). The results indicate that the function and morphology of masseter and temporal muscle may be one of the factors influencing the morphology of dental arch.

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