Introduction:

The periodontal disease as risk factor of preterm births and low birth weight, as well as the existence of efficient multifactorial mathematical models to predict the intensity of this risk, open new perspectives of prevention for both entities.

Objective:

To determine the current state and metaanalysis of the risk relationship between the periodontal disease, preterm births and low birth weight.

Methods:

A literature review and a metaanalysis were carried out with search in databases MEDLINE, PUBMED, SciELO, LILACS, BBO and Cochrane of studies from 1996 to 2020, in humans, in English and/or Spanish languages.

Results:

Two thousand 323 articles were found; 1 429 were excluded because they were duplicated and in other languages, 742 had nothing to do with the thematic of risk action, 105 belonged to other types of studies, 32 did not meet CASPe and Newcastle - Otawa evaluation criteria and just 15 conformed the sample of metaanalysis. More than 50 % of these articles show risk association between the periodontal disease and the adverse results of pregnancy, but risk prediction is not carried out in none of them. There is a great heterogeneity in the studies regarding methodological limitations and form of measuring the periodontal disease, result of the studied pregnancy and evaluation of the gestational age.

Conclusions:

The relationship of causality between periodontal diseases and preterm births with low birth weight is evidenced.

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