【摘要】 本文用γ射线法测量了66例(女性28例,男性38例)无牙颌患者的骨矿含量;用头影测量法测量了无牙颌患者的牙槽骨吸收程度,同时测量血钙、磷、镁、碱性磷酸酶。对骨矿含量,钙磷乘积、碱性磷酸酶、年龄,性别、戴全口义齿时间、缺失全口牙的主要原因、牙槽骨吸收程度等因素作了多元逐步回归分析和主成份分析。结果表明:1.牙槽骨吸收受多种因素的共同影响,全身因素的作用值得重视;2.牙槽骨吸收与骨质疏松有一定的关系;3.无牙颌患者的骨重建作用可能活跃;4.头影测量法仍是目前研究牙槽骨吸收量的好方法。更多还原

【Abstract】 This article is a preliminary study of some factors influenced the residual ridge resorption,66 edentulous subjects,38 for male,and 28 for female,were selected.All the subjects have-worn the complete denture at least for one year,and have not the diseases which mayeffect the metabolism of calcium and phosphorus.The main reasons of teeth lossing and theconditions about wearing of the complete denture were inquired and recorded carefully.Theconditions included time of the denture wearing,the removable partial denture had beenworn or not before all the teeth lossing,and whether the complete denture were worn duringthe night.For every subject the mineral content of right radius was measured by gamma photonabsorptionmetry,serum values of calcium,phosphorus,magnesium,and phosphatase weremeasured,the severity of resorption of residual ridge were measured by cephalometry.Allthe data were analysed by multiple linear regression,and principal component analysed sta-tistically.The results were as follows:1.The residual ridge resorption may be effected by multiple factors simutanously.Systemic factors should not be ignored.2.The residual ridge resorption may be effected by osteoporosis.3.Bone remolding of edentulous patients may be active.4.Cephalometry is still a good method to measure the amount of resorption of alveolarridge at present.更多还原