Abstract: Abstract: Objective To survey on effects of periodontal treatment on pregnant outcome in pregnant women with periodontitis. Methods 63 pregnant women diagnosed with maternal periodontitis were selected in Wuxi Maternal and Child Health-Care Hospital during 2012 April –December. The pregnant women were divided into periodontal treatment group (totally 32) and control group (totally 31). The OHI-S, SBI, PD , CAL were recorded at the beginning and at 32th gestational week; GCF volume was measured by filter strips and IL-1β was measured by ELISA at the same time; pregnant outcome was tracked. The result was analyzed with chi-square test, t test and Spearman correlation analysis. Results ①OHI-S, SBI, PD, GCF volume and IL-1β volume of periodontal treatment group at 32th gestational week were significantly lower than the beginning, and lower than the control group (P <0.05)；②Gestational age of periodontal treatment group was longer than the control group, and there were fewer adverse pregnancy outcomes in treatment group than in the control group (P <0.05)；③GCF volume and IL-1β volume at 32th gestational week and gestational age were negatively correlated (P <0.05). Conclusions Periodontal treatment may help reduce the incidence of the adverse pregnancy outcomes of maternal periodontitis women.

Key words: pregnancy periodontitis, periodontal treatment, preterm birth