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通过对４５例牙周病活动期及静止期临床症状及微生物的检测，发现牙周病活动期临床表现为牙龈肿痛、出血、患牙松动度增加。龈下菌斑中螺旋体的检出率明显高于静止期，并与龈沟出血指数（ＳＢＩ）呈正相关。提示牙周病活动期的诊断依据宜包括临床表现和微生物检测；较客观的诊断指标是螺旋体的检出率和ＳＢＩ。
Through the 45 cases of periodontal disease active and quiescent clinical symptoms and microbiological tests found that periodontal disease active clinical manifestations of swollen gums, bleeding, increased mobility of teeth. The detection rate of spirochetes in subgingival plaque was significantly higher than that in quiescent stage and positively correlated with sulcus bleeding index (SBI). Prompt period of periodontal disease diagnosis should include clinical manifestations and microbial tests; more objective diagnostic indicators is the detection rate of spirochetes and SBI.