【作者】 张楠；

【导师】 李卫星；

【作者基本信息】 山西医科大学 ， 口腔修复学， 2006， 硕士

【摘要】 目的探讨可拆卸式PFM固定桥对基牙牙周微生物的影响。方法戴入可拆卸式PFM固定桥后,对基牙近缺隙侧(M)、远缺隙侧(D)、颊侧(B)、舌侧(L)龈下微生物在修复后即刻及修复后1个月、3个月、6个月、12月分别进行涂片和厌氧培养,检查球菌、杆菌及其他细菌的组成百分比,生化鉴定牙龈卟啉单胞菌、中间普氏菌、具核梭杆菌、伴放线放线杆菌、粘性放线菌。结果不同牙位在同一时期及同一牙位的不同部位在同一时期细菌检出百分比无显著性差异。修复后3个月内,细菌组成变化较大,3个月后,球杆菌已恢复到常态指标。除伴放线放线杆菌始终未检测到外,牙龈卟啉单胞菌、中间普氏菌、具核梭杆菌均被检出,且随着时间延长呈逐渐上升趋势,12月时较初检有显著差异(P<0.01)。结论戴用PFM后,应在12个月内进行拆卸清洗,以维护牙周健康。本研究为可拆卸式PFM固定桥基牙的牙周防治提供了一定的理论基础。.更多还原

【Abstract】 Objective To research about the effect of detachable PFM (porcelain fused to metal) fixed bridges on periodontal microbial of the abutment teeth.Methods periodontal bacterial floras of patients wearing detachable PFM fixed bridges were cultivated in anaerobic condition and analized.Results The percentage of the periodontal bacteria constitutes does not show a remarkable difference , at the different teeth and the same teeth but not the same part which are in the same period . In 3 months, the compose of bacterial has much more changes than that of before, but after 3 months, the compose of bacteria has come back to normal state guideline. The 3 bacterial ( P.g P.i F.n) have been checked out except Aa after 1,3,6,9,12months respectively, the percentage has a gradual uptrend. The percentage of the second molars is much higher than the second premolars, which does not show a remarkable difference.Conclusion This investigation can provide theoretical basis for the prevention of periodontal diseases in patients wearing detachable PFM fixed bridges.更多还原