Previous research has suggested a link between periodontal disease and premature birth. Consequently, pregnant woman have been encouraged to undergo periodontal treatment to reduce these risks.
However, recent studies conducted at the Univeristy of North Carolina’s School of Dentistry revealed no significant differences in pregnancy outcomes when study participants received treatment, as compared to those participants who did not.
As a result of these findings, the American Academy of Periodontology (AAP) released a statement calling for additional research to “clarify the potential impact that periodontal disease has on the risk of preterm births“. The AAP also continues to encourage pregnant women to care for their oral health.
You may also wish to read what the ADA has to say about this topic.