[中国北方成年人下颌骨骨密度的测量]

[Measurement of mandible bone mineral density of adults in north China].

作者信息

Li Ning-Yi, Zhou Fu-Ting, Jing Heng, Bu Ling-Xue, Yang Xue-Cai, Feng Yuan-Yong

机构信息

Department of Oral and Maxillofacial Surgery, Affiliated Hospital of Medical College, Qingdao University, Qingdao Shandong 266003, China.

出版信息

Zhonghua Kou Qiang Yi Xue Za Zhi. 2009 Jul;44(7):425-9.

PMID:19957577

Abstract

OBJECTIVE

To measure the bone mineral density (BMD) of mandible and investigate the relationship between mandible and the whole body skeleton BMD.

METHODS

Healthy volunteers were recruited in north China, which were divided into 6 groups by age: > or = 20, > or = 30, > or = 40, > or = 50, > or = 60 and > or = 70 years older, 10 male and 10 female in each group. Dual-energy X-ray absoptiometery (DXA) was used to measure the BMD of the lumbar spine, the mentum of mandible and the mandibular angle. The results were analyzed statistically.

RESULTS

The mineral density (MD) of the mentum was (1.310 9 +/- 0.035 5) g/cm2, the left mandibular angle (1.048 9 +/- 0.013 7) g/cm2, the right mandibular angle (1.0547 +/- 0.014 1) g/cm2, the lumbar spine (L2-L4) (1.121 1 +/- 0.017 2) g/cm2. There was a significant difference in mandibular angle and lumbar MD between men and women (P < 0.05). The MD of mandibular angle and lumbar spine decreased significantly after 50 years of age.

CONCLUSIONS

The normal BMD of the mandibular mentum, mandibular angles and lumbar spine is obtained. The BMD of the mandibular angles is closely related to that of the lumbar spine. Mandible can be an appropriate measurement site in the evaluation of skeleton BMD status for the forecast of osteoporosis.

摘要

目的

测量下颌骨骨密度（BMD），并探讨下颌骨与全身骨骼BMD之间的关系。

方法

招募中国北方的健康志愿者，按年龄分为6组：≥20岁、≥30岁、≥40岁、≥50岁、≥60岁和≥70岁，每组男、女各10名。采用双能X线吸收法（DXA）测量腰椎、下颌骨颏部和下颌角的BMD。对结果进行统计学分析。

结果

颏部骨密度（MD）为（1.310 9±0.035 5）g/cm²，左侧下颌角为（1.048 9±0.013 7）g/cm²，右侧下颌角为（1.0547±0.014 1）g/cm²，腰椎（L2-L4）为（1.121 1±0.017 2）g/cm²。下颌角和腰椎MD在男性和女性之间存在显著差异（P<0.05）。50岁以后下颌角和腰椎的MD显著下降。