高海拔地区急慢性牙髓炎变形链球菌检出率分析

目的探讨急慢性牙髓炎与变形链球菌的感染及其临床意义。方法获取（海拔2260m）86份急性与64份慢性牙髓炎髓腔内容物标本接种于TM培养基,厌氧箱培养72h后分离可疑菌落,经耐氧实验确定厌氧菌,并做生化反应鉴定菌种。分析变形链球菌在急慢性牙髓炎中的感染率,经卡方检验观察有无差异性。结果变形链球菌在急慢性牙髓炎中的分离率分别为67．4％和29．7％,具有统计学意义（P〈0．01）。结论变形链球菌在高原地区是引起急性牙髓炎的重要病原菌,慢性时为次要病原菌,两者其病因菌存在着变迁。

Analyes on the check rate of mutants streptococcus in specimen and acute pulpits at high altitade

Objective To explore the check rate and clinical meaning of mutants streptococcus in different type of pulpits. Methods The specimen of pulp in 86 cases of acute pulpits and 64 chronic cases were got（at 2260 m）and planted to the TF medium and cultured in anaerobic. Results The detective rates of mutants streptococcus in acute pulpits were notably highter than that of in chronic pulpits（P 〈0.01 ）. Conclusion The mutants streptococcus is an important pathogen in acute pulpits at high altitude, and it is inferior position in chronic pulpits. This pathogen has changes between acute and chronic pulpits.