Cavities During Pregnancy: Causes, Prevention & Natural Support

Written By Sonya Arrigo

Why cavities are more common during pregnancy?

1. Hormonal shifts alter the oral microbiome

During pregnancy, rising estrogen and progesterone levels change how your gums and oral tissues respond to bacteria. This can:

  • Increase inflammation in the gums

  • Shift the balance of oral bacteria

  • Create an environment where cavity-causing bacteria thrive

This is why conditions like pregnancy gingivitis are so common and why cavities can follow.

2. Changes in saliva reduce natural protection

Saliva plays a critical role in protecting your teeth. It helps:

  • Neutralize acids

  • Remineralize enamel

  • Wash away food particles and bacteria

During pregnancy, saliva composition and flow can change, reducing this protective effect and making teeth more vulnerable.

3. Nausea and reflux expose teeth to acid

If you’re experiencing morning sickness or reflux:

  • Stomach acid repeatedly contacts your teeth

  • Enamel becomes weakened and more prone to decay

Brushing immediately after vomiting can actually worsen enamel damage if not done properly.

4. Increased snacking and carbohydrate intake

Frequent eating, especially quick carbohydrates, is common in pregnancy.

This creates:

  • More frequent blood sugar spikes

  • More fuel for cavity-causing bacteria

  • Less time for the mouth to return to a neutral pH

Over time, this increases the risk of demineralization.

3 naturopathic tips to help prevent cavities during pregnancy

1. Support remineralization through nutrition

Focus on nutrients that strengthen enamel and support both maternal and fetal health:

  • Calcium-rich foods (e.g. leafy greens, sesame, full fat dairy if tolerated)

  • Fat-soluble vitamins from foods like organ meats, nut butters (organic), grass fed butter, coconut milk, grass fed finished meats, wild caught seafood

  • GET THAT SUNLIGHT! Nothing better than natural sources of Vitamin D

A well-mineralized body is more resilient to tooth decay.

2. Protect enamel during nausea episodes

If you’re experiencing vomiting:

  • Rinse your mouth with water + a pinch of baking soda (to neutralize acid)

  • Wait 20–30 minutes before brushing

  • Stay hydrated to support saliva production

This simple tip can significantly reduce enamel erosion.

3. Stabilize blood sugar and reduce constant grazing

Instead of frequent snacking on refined carbohydrates:

  • Build meals around protein + healthy fats + fiber

  • If snacking, pair carbs with protein (e.g., apple + nuts)

This reduces the constant acid exposure that drives cavity formation.



If nausea or vomiting is significant, ongoing, or affecting your ability to eat and stay hydrated, this is something that should be addressed more directly. Persistent nausea can increase acid exposure to the teeth, impact nutrient intake, and place additional stress on the body overall.

A naturopathic approach can help reduce symptom severity using safe, pregnancy-appropriate strategies. If you are in Ontario and looking to book, I take patients both virtually and in-person.


book now



Sonya Arrigo
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Staying Active During Pregnancy