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目的：观察下颌骨体有无增龄变化及其相关因素。方法：对１４０例维吾尔族百岁老人采用对一侧下颌骨体表直接测量长度及高度，并进行统计学处理。结果：一侧下颌骨体表长度在８．５ｃｍ～１３．０ｃｍ，高度在１．５ｃｍ～５．０ｃｍ，青年组长度大于百岁组（Ｐ＜０．００１），男性组长、高度大于女性组（Ｐ＜０．０１），有牙颌组长高度大于无牙颌组（Ｐ＜０．０１），正常舌组下颌骨长度大于裂纹舌组（Ｐ＜０．０５），但高度无显著性差异（Ｐ＞０．０５）。结论：下颌骨长高度具有生理变化，同时年龄、性别、有无牙列亦有影响，裂纹舌可能与下颌骨缩小有关。百岁老人有下颌骨体增龄表现
Objective: To observe the changes of mandibular body and its related factors. Methods: One hundred and forty cases of Uygur centenarians were measured by measuring the length and height of one side of the mandible body surface directly and performing statistical analysis. Results: The length of mandibular body on one side was 8.5cm ~ 13.0cm and the height was 1.5cm ~ 5.0cm. The length of young group was higher than that of centenarian group (P <0.001) (P <0.01). The maxillary height of the edentulous jaw group was larger than that of the edentulous jaw group (P <0.01). The length of the mandible in the normal tongue group was longer than that of the tongue group (P <0.05), but the height was not significant Sex differences (P> 0.05). Conclusion: The height of mandible has physiological changes, and age, gender and dentition also have an impact. The cracked tongue may be related to the reduction of mandible. Centenarians have mandibular body aging performance