【摘要】 应用γ射线骨密度分析仪测量了１９例（男性１０例，女性９例）无牙颌患者５年前后的挠骨骨密度和下颌骨骨密度。结果发现随着年龄的增加，桡骨骨密度和下颌骨骨密度均下降，说明下颌骨骨密度变化是全身骨密度变化的口腔局部表现。更多还原

【Abstract】 Abstract This study measured the right radius and the mandibular bone mass over five-year in 19 edentulous patients(10 for male and 9 for female)by using gamma photon absorptiometry. The study shows: 1. both the bone density of the radiu and the mandible decreased with advancing age;2. in any individual, the bone density of the radiu was high, the mandible was the same. The results indicate that the change in mandibular bone mass was the oral local display of change in skeletal bone mineral density.更多还原