Contribution of periodontal disease in pregnant women as a risk factor for low birth weight.

UNLABELLED: Starting in the 1990s, several authors sought to investigate the hypothesis that periodontitis during pregnancy may contribute towards the birth of low-weight children. However, this relationship is still not well established. The aim of this study was to evaluate whether this oral infection is associated with this gestational event. METHODS: This was a case-control study among 548 puerperae, of whom 164 were the mothers of low-weight live births (case group) and 384 were the mothers of live births of normal gestational weight (control group). They were selected at two public hospital units in two municipalities in the State of Bahia. From interviews and data gathered using live birth cards or birth certificates, information was obtained regarding age, height, previous diseases, marital status, socioeconomic situation, smoking and alcohol use. Mothers who presented at least four teeth on which one or more sites had a probing depth of greater than or equal to 4 mm, clinical attachment loss of greater than or equal to 3 mm and bleeding on probing, at the same site, were deemed to present periodontal disease. The data were analysed by stratification from logistic regression. RESULTS: Periodontal disease was diagnosed in 42.7% of the case group and 30% of the control group. A statistically significant association was found between periodontal disease and low birth weight (unadjusted OR = 1.74; 95% CI: 1.19-2.54), particularly among mothers with low schooling levels (adjusted OR = 2.30; 95% CI: 1.14-4.6). CONCLUSION: The findings suggest an association between periodontal disease and low birth weight among mothers with low education levels.

Periodontal status as predictor of prematurity and low birth weight.

OBJECTIVE: The objective was to verify the relation between periodontal status and prematurity/low birth weight. METHODS: a case control study of 211 women, 44 being mothers of children born with weight below 2.500g or gestational age of less than 37 weeks (case group) and 177 mothers of children born with weight of over 2.500g or more and gestational age of 37 weeks or more (control group). The women were invited to reply to a questionnaire during the interview. A single dentist performed a complete periodontal exam in the oral cavity of each participant, including: probing depth, recession, plaque index, bleeding on probing, and clinical attachment loss measurements. Descriptive analysis of the study variables was performed and the statistical significance was calculated at 5%, using the chi-squared test. RESULTS: There was no statistically significant difference in the clinical parameters between the groups. CONCLUSIONS: The findings showed no association between periodontal status and prematurity/low birth weight.