乌梅喷雾剂对维持性血液透析患者口气感官值的影响

目的探讨乌梅喷雾剂对维持性血液透析患者口气感官值的影响。方法纳入2021年10月至2022年10月在我院血液净化中心接受血液透析治疗的患者100例。收集患者的基本资料,将存在氨性口臭[口气感官值(OS)≥2分]的患者通过随机数字表法分为对照组(50例)和观察组(50例)。两组患者均接受口腔卫生指导、喷雾使用方法。观察组患者采用规律透析同时使用乌梅喷雾剂,对照组采用规律血液透析同时使用无菌蒸馏水喷雾,治疗时间为2周。采用鼻测法检测患者的口气感官值及医院自制问卷评估家属满意度。结果与对照组相比,2周后观察组有较低的口气感官值(P<0.05);观察组家属满意度较高,差异有统计学意义(P<0.05)。结论使用乌梅喷雾剂可能改善维持性血液透析患者氨性口臭。

口源性口臭的相关因素

目的 探讨与口源性口臭有关的因素。方法 选择有口臭主诉的病人 12 0人 ,排除有系统性疾病者 ,采用口气测量仪Halimeter测定口气值 ,并进行口腔检查 ,填写调查表。应用多元回归的逐步后退法进行多因素分析。结果 舌背覆盖物、龈炎指数、菌斑指数、牙周袋深度进入回归方程。复合回归系数R =0 .75 4,决定系数R2 =0 .5 69。结论 龈炎指数、菌斑指数、舌背覆盖物。

金银花提取物用于抑制青少年口臭的疗效研究

目的:评价金银花提取物用于青少年口臭的疗效。方法:以金银花提取物为主要成分,搭配藏青果和薄荷,将上述3种中药进行配比,采用滤纸片法抑菌实验测定其对牙龈卟啉单胞菌和具核梭杆菌的抑菌效果。通过硫化氢(H2S)分析仪检测和比较受试者使用口嚼片前后口气值(H2S)的变化,分析金银花提取物抑制口臭的作用。结果:金银花提取物对两种细菌均具有显著的抑菌效果,3种中药成分的最佳配比为5:1:1(金银花:藏青果:薄荷),最小抑菌浓度为6.25%;口气值测定结果表明,使用金银花提取物制备的咀嚼片0 h为(8.48±30.78)ppb, 1 h后为(92.83±34.78)ppb,低于100 ppb。结论:金银花提取物可显著改善青少年口臭,且效果具有一定的持续性。

Analysis on Lean Blowout of Swirl Cup Combustor at Atmospheric Pressure Condition

The experimental data of lean blowout fuel/air ratio of a rectangular swirl cup combustor with different inlet temperatures was obtained at atmospheric pressure condition.Numerical simulations both burning and non-burning were performed corresponding to the experimental data at lean blowout.Results indicated that the size of the recirculation region in the primary zone was obviously smaller when burning than non-burning,but the locations of the cores of their recirculation regions were almost the same.The increase of inlet air temperature didn't mean the rise of the temperature of recirculation region core.The location of the maximum temperature in the primary zone was not the same as that one of the core temperature of the recirculation region.Further more,the reasons were analyzed how the lean blowout fuel/air ratio changed with the inlet temperature increasing under the actions of factors both positive and negative to combustion,and this would be helpful to deepen the understanding of the lean blowout process of swirl cup combustor.