Women with many children are advised to seek regular dental treatment as it appears they may be at greater risk of tooth loss than other women.
A new study by scientists at New York University analysed data on 2,635 white and black women between the ages of 18 and 64, all of whom had given birth at least once.
Analysis revealed that women with the most children were more likely to have missing teeth than those with only one child, highlighting the importance for mothers of obtaining regular dental treatment.
Commenting on the findings, which are published in the American Journal of Public Health, Dr Stefanie Russell, assistant professor of epidemiology & health promotion, said: "This is the first time we've seen a connection between pregnancy and tooth loss affecting women at all socioeconomic levels in a large, heterogeneous sample.
"It is clear that women with multiple children need to be especially vigilant about their oral health."
The link is thought to be due to a number of factors, including the heightened risk of gingivitis (gum inflammation) during pregnancy, financial constraints preventing mothers from seeking private dental treatment, and a lack of time for personal care while children are young.