Studies have indicated that periodontal treatment improves periodontal health and is safe,[21–23] and periodontal treatment reduces the incidence of PT/LBW rate.[24, 17] Results obtained in the present study are consistent with previous studies.[17, 24, 25] In this study, the association observed between CRP and periodontal disease in pregnancy may or may not be causal. Here, CRP is linked to periodontal disorder.