【摘要】 目的　观察快速进展性牙周炎患牙牙骨质的表面形貌并分析其微区成分 ,以明确快速进展性牙周炎患牙是否存在牙骨质异常。方法　用扫描电镜观察 1 0颗快速进展性牙周炎患牙、1 0颗慢性牙周炎患牙及 1 0颗牙周健康牙齿的牙骨质表面形貌 ,通过能谱分析测定牙骨质表面的微区成分 (Ca、P、Mg) ,着重对前两组患牙进行比较。结果　快速进展性牙周炎患牙牙骨质的表面形貌和慢性牙周炎患牙牙骨质的表面形貌基本相似 ,Ca(64 60 %± 2 2 9% ,63 54 %± 2 97% ,P >0 0 5)、P(32 54 %± 1 2 9% ,32 97%± 2 40 % ,P >0 0 5)、Mg(2 86 %± 1 2 9% ,3 48%± 1 0 2 % ,P >0 0 5)含量及Ca/P(2 0 0± 0 1 7,1 95± 0 2 5 ,P >0 0 5) ,差异均无显著性。结论　部分快速进展性牙周炎患牙可能不存在牙骨质异常更多还原

【Abstract】 Objective To observe root surfaces and analyze the mineral contents in cementum of patients with rapidly progressive periodontitis (RPP) Methods Ten teeth were selected from RPP patients, adult periodontitis(AP) patients and healthy(H) control subjects respectively, and prepared for scanning electron microscopy(JSM 35C) The energy dispersive X ray analysis was used to measure the mineral contents in cementum (Ca, P, Mg) Results The root surfaces of RPP teeth were similar to that of AP teeth Ca: 64 60%± 2 29% vs 63 54%±2 97%, P >0 05; P:32 54%±1 29% vs 32 97%±2 40%, P >0 05; Mg:2 86%±1 29% vs 3 48%±1 02%, P >0 05; Ca/P: 2 00±0 17 vs 1 95±0 25, P >0 05 There were no differences in Ca, P, Mg contents and Ca/P ratio between RPP teeth and AP teeth Conclusion There may not be cementoplasia in a part of RPP teeth更多还原