偏侧咀嚼对大鼠下颌骨生长发育的影响

doi:吉林省科技厅资助课题

偏侧咀嚼对大鼠下颌骨生长发育的影响

陈远萍¹，黄洋²，毕长青¹，杨大宇^△

1. 吉林大学口腔医院正畸科，吉林长春130041；2. 吉林大学口腔医院儿童牙科，吉林长春130041

收稿日期:2003-05-12 修回日期:1900-01-01 出版日期:2004-03-28 发布日期:2004-03-28

Effect of hemimastication on growth of mandible in rat

CHEN Yuan-ping¹, HUANG Yang², BI Chang-qing¹, YANG Da-yu^△

1.Department of Orthodontics, Stomatology Hospital, Jilin University, Changchun 130041,China；2. Department of Children Dentistry,Stomatology Hospital,Jilin University, Changchun 130041,China

Received:2003-05-12 Revised:1900-01-01 Online:2004-03-28 Published:2004-03-28

摘要/Abstract

摘要： 目的：探讨偏侧咀嚼对下颌骨发育的影响。方法：建立偏侧咀嚼大鼠动物模型，8周后处死，取下颌骨进行软X线摄片、定点，运用图像分析仪测量线距。结果：下颌骨长度、下颌骨体长度实验组较对照组增长，实验组非咀嚼侧较咀嚼侧增长；髁状突高度实验组咀嚼侧与非咀嚼侧都明显低于对照组；喙突高度实验组咀嚼侧明显高于对照组，而咀嚼侧与非咀嚼侧、非咀嚼侧与对照组无明显差异。下颌角高度的测量结果显示，实验组咀嚼侧与非咀嚼侧不同，咀嚼侧低于对照组，非咀嚼侧高于对照组。结论：偏侧咀嚼使下颌骨长度、下颌角的发育不对称，髁状突高度发育不足，提示偏侧咀嚼影响下颌骨的正常生长发育。

关键词: 下颌骨, 生长&发育, 疾病模型, 动物

Abstract: Objective To study the effect of hemimastication on the growth of mandible in rat. Methods Rat models with hemimastication were built up, and sacrificed 8 weeks later. Mandibula were resected for soft X ray radiographing and pointing, then the distances between the points were meatured with graph analysis system. Results As for the lengthes of mandibula and mandibular bodies in experimental group increased compared with control group, and the non-mastication side increased compared with mastication side in experimental group; the condyloid process heights of mastication and non-mastication side in experimental group were lower than those in control group; the coracoid height of mastication side in experimental group was obviously higher than that in control group. While between mastication side and non-mastication side, non-mastication side and control group, no differences could be found. The results of the height of mandibular angle measuring showed that there were some differences between the mastication and non-mastication side in experimental group, the height of mandibular angle of mastication side was lower than that of control group, and the height of mandibular angle of non-mastication side was higher than that of control group. Conclusion Hemimastication may contribute to the asymmetry growth of mandibula and mandibular angle, deficient growth of the condyloid process, which suggesting that hemimastication can influence the growth of mandibula.

Key words: mandible, growth & development, disease models, animal

中图分类号:

R783.5

陈远萍，黄洋，毕长青，杨大宇. 偏侧咀嚼对大鼠下颌骨生长发育的影响[J]. J4, 2004, 30(2): 218-220.

CHEN Yuan-ping, HUANG Yang, BI Chang-qing, YANG Da-yu. Effect of hemimastication on growth of mandible in rat[J]. J4, 2004, 30(2): 218-220.

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