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Oral Diseases (2011) 17, 515–521

Objective:  The present study evaluated the relationship between periodontal disease and its clinical variables in Brazilian non‐diabetic pregnant women (C), gestational diabetes mellitus (GDM), or type 1 diabetes mellitus (T1DM).

Subjects and methods:  A periodontal exam was performed in one hundred and sixty‐one pregnant women (GDM:80; T1DM:31; C:50) by a single‐blinded calibrated examiner who recorded plaque index (PI), gingival index (GI), bleeding index (BI), gingival margin location (GM), probing depth (PD), clinical attachment level (CAL), bleeding on probing (BOP), and tooth mobility index (MI). The medical variables were age, pregestational body mass index (pre‐BMI), fasting plasma glucose (FPG), and glycated hemoglobin (HbA_1c).

Results:  The GI, GM, PD, CAL, BOP, and MI were significantly higher (P < 0.01) among GDM and T1DM than for C. The …