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本研究旨在比较根面平整与牙周放置丙烯酸抗生素药条(洗必太、甲硝唑、四环素)对慢性牙周炎龈下菌丛组成和抗生素敏感性的影响,药条的载体选用聚甲基丙烯酸甲酯,药物浓度为50％(w/w)。所选病例73例,其中牙周袋>6mm的牙数为101,随机分成6组:洗必太组、甲硝唑组、四环素组、根面平整组、根面平整加甲硝唑组、空白对照组。分别于实验前、实验后1,2,4,8和12周取龈下菌斑进行厌氧培养,7天后计算各
The aim of this study was to compare the effects of root-mean-surface preparation with periodontal antibiotic antibiotics (chlorhexidine, metronidazole and tetracycline) on the composition and antibiotic sensitivity of subgingival flora in chronic periodontitis. Polymethyl Methyl acrylate at a drug concentration of 50% (w / w). Selected 73 cases, of which periodontal pocket> 6mm teeth 101, were randomly divided into 6 groups: chlorhexidine group, metronidazole group, tetracycline group, root formation group, root surface formation plus metronidazole group, Blank control group. Subgingival plaque was taken anaerobically before and 1, 2, 4, 8 and 12 weeks after the experiment. After 7 days,