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目的探讨舰员和地勤人员牙周致病性厌氧菌、牙龈血流量(GBF)和谷胱甘肽过氧化物酶(GPx)的差异,为舰员牙周炎发病机制研究提供依据。方法采用厌氧培养法检测舰员和地勤人员牙周袋内致病性厌氧菌,激光多普勒血流仪测定GBF,DTNB比色法测定龈沟液中GPx,并分析与临床指标关系。结果舰员牙周致病性厌氧菌数(3 465.7×106CFU/ml)明显高于地勤人员(2 945.1×106CFU/ml,P<0.01),GBF〔(99.4±9.7)mv〕和GCF-GPx〔(149.7±19.5)U〕明显低于地勤人员〔分别为(365.7±10.5)mv和(451.2±11.4)U〕;舰员牙周炎牙龈指数、牙龈出血指数、菌斑指数、牙周袋深度、牙周附着丧失明显高于地勤人员(P<0.01)。结论舰员牙周炎发病率高与牙周致病性厌氧菌增多、牙龈微循环障碍、GBF和GPx活性降低有关。
Objective To investigate the difference of periodontal pathogenic anaerobes, gingival blood flow (GBF) and glutathione peroxidase (GPx) between seafarers and ground crew members, and to provide basis for the study on the pathogenesis of periodontitis in seafarers. Methods The anaerobic culture method was used to detect the pathogenic anaerobes in the periodontal pocket of crew members and ground crew. The determination of GBF by laser Doppler flowmetry and the determination of GPx in gingival crevicular fluid by DTNB colorimetric method were performed. . Results The numbers of pathogenic anaerobic bacteria in the periodontal tissues of the crew members (3 465.7 × 106CFU / ml) were significantly higher than that of the ground crew (2 945.1 × 106CFU / ml, P <0.01), GBF 〔(99.4 ± 9.7) mv〕 and GCF- GPx 〔(149.7 ± 19.5〕 U〕 was significantly lower than that of ground crew 〔(365.7 ± 10.5) mv and (451.2 ± 11.4〕 U〕 respectively); gingival index, gingival bleeding index, plaque index, Bag depth, loss of periodontal attachment was significantly higher than ground crew (P <0.01). Conclusion The high incidence of periodontitis in sailors is related to the increase of periodontal pathogenic anaerobes, gingival microcirculation, and the decrease of GBF and GPx activities.