Truth: Some nights pregnancy is so exhausting that you probably collapse into bed without brushing your teeth. But skipping this nightly scrub (or the morning one), can do a number on your teeth and gums, especially when you’re expecting. In fact, if your oral health declines, your risk of cavities, gum disease, and even pregnancy complications can increase.

What’s more, a mom-to-be with dental trouble can pass cavity-causing bacteria to her baby during and after pregnancy, which means a fresh mouth has never been so important.

Learn how being pregnant can affect oral health, plus get tips for keeping your teeth and gums in shape during pregnancy.

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Key Takeaways
  • Oral care is even more important when you’re expecting. Hormones, extra snacking, morning sickness, and skipped brushing can all raise your risk of cavities and gum disease during pregnancy, which in turn may be linked to complications like preterm birth and low birth weight.
  • It’s safe — and important — to see your dentist while you’re expecting. Routine cleanings, necessary X-rays with proper shielding, and cavity fillings with local anesthesia are all considered safe in pregnancy and help keep your mouth (and baby) healthier.
  • Good daily habits now can protect both your smile and your baby’s future teeth. Brushing with fluoride twice a day, flossing, rinsing after morning sickness, choosing tooth-friendly snacks, and keeping up with regular dental visits can cut bacteria, lower cavity risk, and even protect your little one.

How does pregnancy affect oral health?

Oral hygiene might be more important than ever during pregnancy: When you’re expecting, you may be more prone to developing gum disease and cavities.

Thanks to hormonal changes during pregnancy, between 60 and 75% of pregnant moms have gingivitis. This early form of periodontal disease can cause gums to become swollen, bleeding, or inflamed. Left untreated, gingivitis can morph into periodontitis, which is a more severe type of gum disease that can include bone loss — and with less support from dental bones, your teeth can loosen and may need to be removed.

Pregnant women are also at an increased risk of cavities, thanks to several oral health changes and habits that are commonly picked up during pregnancy. For example, eating smaller meals more often, rather than the typical pre-pregnancy three squares a day, means more acid and bacteria come into contact with your teeth. Bouts of morning sickness can also leave a film of acid on your teeth — and in both cases, these acids can eat away and weaken tooth enamel, upping your risk of cavities.

Your healthy habits may be on hiatus too. Growing a baby takes a good bit of energy, so flopping into bed at night may take priority over regular brushing and flossing. Plus fatigue, stress, or simply a case of “pregnancy brain” can cause more than a few moms to forget to schedule their dentist appointments.

The bottom line: Stickier teeth and potential cavities can be the result.

Get personalized pregnancy health tips from head to toe by downloading the What to Expect app.

Is it safe to go to the dentist during pregnancy?

Yes. Seeing the dentist every six months during pregnancy  is important so you can keep your mouth clean and (fingers crossed) cavity-free. Go to your regular twice-a-year appointments, and if your dentist recommends X-rays, don't worry: Dental X-rays are completely safe during pregnancy.

If avoiding radiation from X-rays is on your mind, ask your dentist whether they can be delayed until after your baby is born. But if they’re truly needed, know that the amount of radiation used is very small, and protective covers are used to shield you and your baby and minimize exposure.

Getting cavity fillings during pregnancy is also fine, as is other dental work requiring numbing agents. Dentists typically use local anesthesia like novocaine or lidocaine, both of which are considered safe when you're pregnant.

What pregnancy complications can be caused by poor oral health?

While it’s not exactly understood how poor dental health causes pregnancy complications, periodontitis has been associated with preterm birth, low birth weight, and even preeclampsia.

The theory is that too much bacteria in an expectant woman’s mouth can get into the bloodstream and journey to the uterus, where it can cause prostaglandins to develop and potentially trigger early labor.

Pregnant women with lots of oral bacteria could also end up passing these germs to their babies after delivery via mouth-to-mouth transmission. This potentially aggressive and damaging bacteria can actually harm an infant’s future teeth, causing cavities at a very young age.

“I have a lot of problems with my teeth (genetic), so it was one of the first things I brought up to my OB! She said that I should definitely still get cleanings, and if there’s anything extra they need to do, they ... know what’s appropriate during pregnancy,” says What to Expect Community member Pinkgiraffe150.

How to improve oral health during pregnancy

Here are some smart ways to keep up good oral hygiene while you’re expecting:

  • Brush on schedule. Who knew a little toothpaste could prevent so much? Twice-daily brushing with fluoride toothpaste, along with flossing once a day, can beat back plaque and help you avoid cavities.
  • Scrub your tongue. It feels weird, but giving your tongue a good once-over with your toothbrush or a tongue scraper can wash away bacteria.
  • Rinse out your mouth. Combat the acid left behind by morning sickness with a swish of water, or rinse with a teaspoon of baking soda dissolved in a cup of H2O if and when you feel up to it. You can also chew OTC antacids for the same effect.
  • Eat right. Swap sugary treats and drinks for fresh fruits and vegetables and plain water instead. Not only will your teeth be better off, but your baby’s tiny choppers will get a healthy head start too.
  • Chew gum. If you can’t brush after a meal, try chewing a piece of sugarless gum. Or if the taste of gum isn’t a favorite, eating a few nuts or a small piece of hard cheese after a meal can also fight bacteria.
  • Keep up with regular dentist visits. Stick with with your twice-yearly (every six months) dentist appointments when you're pregnant. Calendar reminders or sticky notes can help you remember.

You’ve got a lot on your mind during pregnancy, but don’t forget to add good oral hygiene to your (growing) list. Healthy teeth and gums affect your well-being and that of your baby-on-board, so keep on brushin’ and swishin’ both now and after your due date.