牙周炎是常见多菌种混合感染引起的疾病 ,它的发病与口腔无芽胞厌氧菌密切相关 ,以往常采用甲硝唑 ,红霉素为主的药物口服治疗 ,显示出其较好的疗效 ,但因全身用药量大 ,且时间长在牙周组织中的局部浓度低等缺点 ,为此 ,我们进行多次实验 ,并参照有关资料 ,制成了以甲硝唑与红? Periodontitis is a common disease caused by multi-bacteria mixed infection, its incidence and oral non-spore anaerobic bacteria are closely related to the past, the use of metronidazole, erythromycin-based oral medication, showed its better Curative effect, but because of the large amount of systemic medication, and for a long time in the periodontal tissue of the local concentration and other shortcomings, for which we conducted a number of experiments, and with reference to the data made of metronidazole and red?