三维CT成像评价老年人牙齿残缺与颈动脉粥样硬化的关系

The correlation between periodontal diseases and carotid arteries atherosclerosis by three-dimensional reconstruction technique of multi-slice spiral CT in elderly people

目的探讨三维CT成像技术显示牙齿残缺的临床应用价值，并通过三维CT成像评价老年人牙齿残缺与颈动脉粥样硬化的关系。方法从年龄大于60岁的三维CT血管造影检查者中随机选择60例颈部动脉粥样硬化患者为病例组，颈部动脉正常者60例为对照组，采用多种图像后处理技术，分别观察两组牙齿残缺情况和颈部动脉情况。结果病例组患龋人数、缺齿人数、无牙颌人数均多于对照组（P〈0．05）。牙齿完整人数对照组（19例）高于病例组（7例），患龋者病组（7．3±3．0）颗高于对照组（6．0±2．1）颗，缺齿者均数病例组（45例）高于对照组（39例）（P〈0．05）；牙齿疾患与颈动脉粥样硬化疾病相关，三维CT成像技术观察颌骨牙齿情况，可以全面展示牙齿立体形态和内部结构，为牙周疾病提供有价值的资料。结论老年人龋齿、牙缺失与动脉粥样硬化密切相关。三维CT成像技术可为研究外周血管疾病与牙周疾病提供有价值的方法。

Objective To explore the possible correlation between periodontal disease and carotid arteries atherosclerosis in old people, and to study the diagnostic value for periodontal disease using three-dimensional （3D） reconstruction technique of multi-slice spiral CT （MSCT）. Methods Patients underwent multi-detector row CT angiography with carotid arteries atherosclerosis （control group） and without carotid arteries atherosclerosis （case group） were evaluated with the stereoscopic configuration of teeth, and the number of decayed teeth and lost teeth were recorded. Results By the 3D reconstruction technique, the number of decayed teeth and lost teeth between two groups were significantly different （P〈0.05）. The number of dental integrity patients was higher in control group （19 cases） than in case group（7 cases）. The mean of dental caries was higher in control group（7.3± 3.0） than in case group（6.0±2.1）. The mean of hypodontia was higher in control group（45 cases） than in case group（39 cases） （P〈0.05）. Conclusions The 3D reconstruction technique of MSCT is a new method to display the stereoscopic configuration of teeth. The periodontal disease is significantly related with carotid arteries atherosclerosis in old people.