Pregnancy brings a long list of health considerations, but oral health often gets overlooked. Hormonal changes during pregnancy can have a significant impact on your gums and teeth, and emerging research continues to reveal connections between maternal oral health and pregnancy outcomes. Understanding what to expect and how to care for your mouth during pregnancy is important for both you and your baby.
How Pregnancy Affects Your Oral Health
The hormonal shifts of pregnancy — particularly increases in progesterone and estrogen — change the way your body responds to bacteria in your mouth. These changes can lead to several oral health conditions that are more common or more severe during pregnancy.
Pregnancy gingivitis is the most common dental issue, affecting up to 75 percent of pregnant women. You may notice your gums are redder, swollen, tender, or bleed easily when you brush or floss. This typically appears during the second trimester and often resolves after delivery, but left untreated it can progress to more serious gum disease.
Pregnancy tumours — despite the alarming name — are non-cancerous growths that can appear on the gums, usually during the second trimester. These red, raw-looking lumps bleed easily and are thought to be caused by excess plaque. They typically disappear on their own after delivery, but your dentist can remove them if they’re causing discomfort or interfering with eating.
Morning Sickness and Your Teeth
Frequent vomiting during pregnancy exposes your teeth to strong stomach acids that can erode enamel over time. While the instinct is to brush immediately after being sick, this can actually make the erosion worse by scrubbing acid into softened enamel.
Instead, rinse your mouth with plain water or a mixture of water and a teaspoon of baking soda immediately after vomiting. This neutralizes the acid. Wait at least 30 minutes before brushing your teeth to give your enamel time to reharden. If morning sickness makes brushing unpleasant, try switching to a bland-tasting toothpaste and using a smaller toothbrush head, which can reduce the gag reflex.
Is Dental Treatment Safe During Pregnancy?
One of the most persistent myths about pregnancy is that you should avoid the dentist entirely. In fact, the opposite is true — dental care during pregnancy is not only safe but strongly recommended by both dental and obstetric professional organizations in Canada.
Routine cleanings, exams, and necessary dental work can be done safely throughout pregnancy. The second trimester is generally considered the most comfortable time for dental visits, but treatment can be performed during any trimester when needed. Dental X-rays are safe during pregnancy when proper shielding is used — the radiation exposure from dental X-rays is extremely low, and modern digital X-rays reduce this exposure even further.
Local anaesthetics like lidocaine are considered safe during pregnancy. If you need a filling, root canal, or extraction, delaying treatment can actually pose greater risks than the procedure itself, as untreated infections can affect both your health and your pregnancy.
The Connection Between Gum Disease and Pregnancy Outcomes
Research has identified associations between periodontal disease and adverse pregnancy outcomes including preterm birth, low birth weight, and preeclampsia. While the exact mechanisms are still being studied, the theory is that the bacteria and inflammatory substances from gum infections can enter the bloodstream and potentially affect the developing baby.
This doesn’t mean that gum disease will cause pregnancy complications, but it does reinforce the importance of maintaining good oral health during pregnancy. Treating gum disease during pregnancy is safe and may reduce these risks.
Daily Oral Care Tips for Pregnant Women
Maintaining a thorough daily oral hygiene routine is especially important during pregnancy. Brush twice a day with a fluoride toothpaste, using a soft-bristled brush. Floss daily to remove plaque from between teeth where your brush can’t reach. If your gums are tender and bleeding, don’t stop brushing and flossing — gentle, consistent cleaning actually helps reduce gum inflammation over time.
Pregnancy cravings can increase your sugar intake, which raises your risk for cavities. When you do indulge in sugary snacks, try to eat them as part of a meal rather than grazing throughout the day. Rinse with water afterward, and consider chewing sugar-free xylitol gum, which has been shown to reduce cavity-causing bacteria.
Stay hydrated by drinking plenty of water throughout the day. Dry mouth, which can occur during pregnancy, increases cavity risk because saliva plays an important role in neutralizing acids and washing away food particles.
What to Tell Your Dentist
When you book your dental appointment, let the office know that you’re pregnant and how far along you are. Also share a list of any medications, vitamins, or supplements you’re taking, including prenatal vitamins. If your obstetrician has given you any specific medical instructions or if you have a high-risk pregnancy, communicate this to your dental team so they can tailor their care accordingly.
Don’t hesitate to ask questions about the safety of any recommended procedure or medication. A good dental team will take the time to explain why a treatment is recommended and address any concerns you have about its safety during pregnancy.
After Baby Arrives
Your oral health remains important after delivery, particularly because cavity-causing bacteria can be transmitted from parent to child. Avoid sharing utensils or cleaning a pacifier in your own mouth, as this can transfer bacteria to your baby’s mouth before their immune system is fully developed.
Schedule a dental checkup for yourself shortly after delivery, especially if you experienced any gum problems during pregnancy. And plan your baby’s first dental visit by their first birthday or within six months of their first tooth appearing — establishing early dental care sets the foundation for a lifetime of good oral health.
Looking for a dentist who is experienced in caring for pregnant patients? Search Smile Directory to find dental professionals across Canada who can support your oral health throughout pregnancy and beyond.