Dental Care During Pregnancy: Is It Safe?

Many pregnant patients ask us the same question: is it safe to keep seeing my dentist while I'm pregnant? The short answer is yes, and skipping dental care during pregnancy can cause real problems. Hormonal changes make your gums more vulnerable, and untreated dental issues can affect both your health and your baby's. This is not the time to put dental care on hold.

Why Pregnancy Affects Your Oral Health

Pregnancy hormones, particularly estrogen and progesterone, increase blood flow to your gums and make them more sensitive to bacteria. The result is pregnancy gingivitis: swollen, tender gums that bleed easily when you brush or floss. Studies suggest up to 75% of pregnant people experience some degree of it.

Morning sickness adds another layer. Frequent vomiting exposes your teeth to stomach acid, which erodes enamel over time. Rinsing your mouth with water or a diluted baking soda solution after vomiting helps neutralise the acid and protect your enamel.

Untreated gum disease during pregnancy has been associated with preterm birth and low birth weight, though research is ongoing. The connection is reason enough to stay on top of your dental care. If your gums have been bothering you, our guide on signs of gum disease explains what to watch for.

Which Dental Treatments Are Safe?

Most routine and necessary dental treatments are safe during pregnancy. The Canadian Dental Association, the College of Dental Hygienists of Ontario, and obstetrics guidelines all agree: preventive, diagnostic, and restorative care can continue through all three trimesters when clinically indicated.

Treatment	Safe During Pregnancy?	Best Timing
Cleaning and exam	Yes, recommended	Any trimester
Dental X-rays (digital, with lead apron)	Yes, when clinically needed	Any trimester
Fillings	Yes	Second trimester preferred
Root canal or extraction	Yes, when necessary	Second trimester preferred
Local anaesthetic (lidocaine)	Yes	Any trimester
Teeth whitening	Not recommended	After delivery
Elective cosmetic work	Best deferred	After delivery

What About Dental X-Rays?

Dental X-rays are one of the most common concerns pregnant patients raise. Modern digital X-rays use a very low dose of radiation, and with a lead apron and thyroid collar, your baby's exposure is negligible. The Canadian Dental Association confirms that dental X-rays are safe during pregnancy when clinically indicated.

Routine X-rays that aren't clinically urgent can usually be deferred until after delivery if you prefer. Your dentist will make a judgement call on whether imaging is necessary at your visit.

Local Anaesthetic Is Safe Too

If you need a filling or other restorative work, you don't have to go without pain relief. Lidocaine, the local anaesthetic most commonly used in Ontario dental offices, is safe during pregnancy. Studies have confirmed this, and both the Canadian Dental Association and the American College of Obstetricians and Gynecologists support its use.

Let your dentist know you're pregnant before any procedure so they can use the appropriate formulation and dosage. Going through a painful procedure without anaesthetic is riskier than using it.

When to Book Your Appointment

If you can plan ahead, the second trimester (roughly weeks 14 to 28) is the ideal window for non-emergency dental work. The most sensitive period of fetal development has passed, and your belly isn't yet making it uncomfortable to lie back in the chair for extended periods.

In the first trimester, keep up with your regular exams and cleanings, and avoid elective procedures where possible. This is when major organ development is happening.

In the third trimester, long appointments can be uncomfortable. Emergencies and urgent care should still be addressed. Short appointments and sitting slightly more upright can help with comfort.

What to Tell Your Dentist Before Your Appointment

Always let your dental team know you're pregnant when you book and again at your appointment. Tell them:

• How far along you are (gestational week)

• The name and contact of your obstetrician or midwife

• Any medications or supplements you're taking

• Any pregnancy complications, such as gestational diabetes, preeclampsia, or a high-risk designation

This information helps your dentist make the safest choices for your care at every visit.

Frequently Asked Questions

Can I get a cavity filled while pregnant?

Yes. Leaving a cavity untreated poses more risk than treating it. If possible, fillings are best done in the second trimester, but urgent treatment can be done safely at any stage of pregnancy.

Are dental X-rays safe during pregnancy?

Yes, when clinically needed. Digital X-rays use very low radiation, and a lead apron and thyroid collar protect both you and your baby. Routine X-rays that aren't urgent can usually wait until after delivery.

Is local anaesthetic safe when pregnant?

Yes. Lidocaine is considered safe during pregnancy and is supported by both the Canadian Dental Association and obstetrics guidelines. Avoiding anaesthetic and enduring a painful procedure is riskier than using it.

What if morning sickness makes it hard to come in?

Let us know when you book. We can schedule shorter appointments, keep the chair more upright, and avoid triggers like strong flavours or smells. Your oral health during pregnancy is important enough to work around morning sickness, not cancel for it.

Pregnant and due for a checkup? Book an appointment with Lornview Dental and let us know you're expecting. We'll make your visit comfortable, safe, and tailored to where you are in your pregnancy.