Pregnancy and oral health: what nobody really tells you

Pregnancy and oral health: what nobody really tells you

Published on September 16, 2026

During pregnancy, we monitor our diet, sleep, skin, and many other bodily changes. However, the mouth is also one of the areas directly influenced by this period.

Hormonal fluctuations can alter the gums' reaction to plaque and change the oral environment. Some women may then experience bleeding gums, gum sensitivity, a change in breath, or a drier mouth.

These changes should neither be a cause for alarm nor be dismissed. Understanding what happens in the mouth during pregnancy allows you to adopt the right habits and preserve your oral health during these nine months.

1. Hormones can change your gums

During pregnancy, estrogen and progesterone concentrations increase considerably.

These hormonal changes influence, in particular, how gum tissue reacts to bacterial plaque. Gums may become redder, swollen, or sensitive and bleed more easily during brushing.

We often talk about pregnancy gingivitis.

Bleeding, however, does not mean you should brush the area less frequently. On the contrary, allowing plaque to accumulate risks perpetuating the inflammation. Gentle but thorough brushing and cleaning between the teeth remain essential.

2. Nausea and diet: two often overlooked factors

Nausea and vomiting can also affect the teeth.

When someone vomits, their teeth are exposed to gastric acid. Brushing immediately afterwards can then exert a mechanical action on enamel that has been temporarily weakened by this acidic environment.

It is best to start by rinsing your mouth with water and waiting before brushing.

Eating habits also change during pregnancy. More frequent meals or increased consumption of sugary foods increase the exposure of teeth to acids produced by bacteria.

The goal is not to make anyone feel guilty, but simply to understand these mechanisms in order to adapt one's routine.

3. Your oral microbiota is also changing

The mouth naturally hosts an extremely rich community of bacteria and other microorganisms: the oral microbiota.

Pregnancy can alter this balance through the combined effect of hormones, saliva, diet, and changes in habits.

This is why this period deserves special attention. Maintain a twice-daily brushing routine, clean between your teeth daily, stay hydrated, and don't neglect your checkups with your dentist.

A consultation during pregnancy allows, in particular, for monitoring the condition of the gums and for the early detection of any abnormalities.

In Summary

  • Hormonal changes can make gums more sensitive.
  • Nausea, vomiting, and dietary changes also affect dental health.
  • The oral microbiota changes during pregnancy.
  • Regular hygiene and follow-up with the dentist are particularly important during this period.

Christiane,

Dentist & Co-founder of The Smilist

FAQ

Is it normal to have bleeding gums during pregnancy?

Bleeding is more frequent during pregnancy, mainly due to hormonal changes. It should nevertheless be monitored.

Can pregnancy weaken teeth?

Pregnancy alters several factors that influence oral health, including dietary habits, gums, and exposure to acids.

Is it safe to go to the dentist while pregnant?

Yes. Regular oral health checkups are part of preventative care during pregnancy. Simply inform your dentist that you are pregnant.

Why shouldn't you brush your teeth immediately after vomiting?

Stomach acid temporarily alters the environment of the enamel. It is best to rinse your mouth first and wait before brushing.

Does the oral microbiota change during pregnancy?

Yes. The hormonal and physiological changes of pregnancy can influence the composition and balance of the oral microbiota.

To read also

  • Bleeding gums: the real causes and how to treat them
  • Which toothpaste should you choose during pregnancy? What you really need to know
  • Oral microbiota: everything you need to know about the bacteria in our mouth

FOCUS

The products in this article