Relationship Between Diet and Cavity Risk
Diet plays a powerful role in your child’s oral health. While brushing, flossing, and regular dental visits are essential, they will not be enough to combat poor dietary habits. This post is meant to outline the foods to avoid and foods to include in your child’s diet to help optimize their oral health. Understanding the relationship between food, bacteria, and enamel can help parents make informed choices that protect growing smiles.
Foods to Limit or Avoid to Reduce Cavity Risk
Cavities form when bacteria that already exist in our mouths feed on sugars and starches, producing acids that weaken enamel. Foods that increase cavity risk include:
- Sugary snacks and desserts (cookies, candy, pastries)
- Sticky foods (fruit snacks, gummies, dried fruit)
- Sugary and acidic drinks (soda, juice, sports drinks)
- Frequent snacking, even on “healthy” carbohydrates like crackers, pretzels, or goldfish
It’s important to note that from a cavity-forming standpoint, frequency matters more than quantity. Constant grazing or sipping keeps teeth in an acidic environment, increasing the risk of enamel breakdown. When possible, sugary or starchy foods should be consumed with meals rather than between them, and water should be the primary drink between meals.
As a father, I know this is much easier said than done. It is nearly impossible for most children to go even a few days without having some of the above foods, even if it is not provided in the home. The key is to make eating sugar the exception rather than the rule and teaching our children why. Limiting our children to small and infrequent desserts and purchasing low-carb snack options can make an enormous difference. For older children, we can educate them and help them feel that they can make good decisions about food when we are not around.
Limiting sugar intake goes way beyond teeth. I will write more soon about how consuming excess sugar can impact our lives long-term. It’s ok to be excited.
Important Vitamins and Where to Find Them
The following is a list of essential vitamins that all children should consume regularly and the foods they are commonly found in. If you are concerned your child may not be getting these vitamins naturally, it is worth considering offering a multivitamin. Don’t worry, there will be another blog post about multivitamins soon.
Calcium
How it helps oral health:
Calcium is a primary building block of tooth enamel and dentin. Adequate calcium intake helps keep enamel strong and more resistant to acid attacks that cause cavities.
Common food sources:
- Milk
- Cheese
- Yogurt
- Fortified plant-based milks
- Leafy green vegetables (kale, broccoli)
Keep in mind that most dairy products have lactose, which can be cavity-causing. Therefore, dairy products should be eaten at designated meal or snack times only.
Vitamin D
How it helps oral health:
Vitamin D helps the body absorb calcium and phosphorus, making it critical for proper tooth development and mineralization. Low vitamin D levels have been associated with increased cavity risk.
Common food sources:
- Fortified milk and dairy products
- Fatty fish (salmon, tuna)
- Egg yolks
- Sunlight exposure (with appropriate skin protection)
Phosphorus
How it helps oral health:
Phosphorus works alongside calcium to strengthen tooth enamel and promote remineralization after acid exposure.
Common food sources:
- Meat and poultry
- Fish
- Eggs
- Dairy products
- Nuts and seeds
- Some whole grains
Vitamin A
How it helps oral health:
Vitamin A supports healthy oral tissues and helps maintain proper saliva flow, which is essential for neutralizing acids and protecting enamel.
Common food sources:
- Carrots
- Sweet potatoes
- Spinach
- Pumpkin
- Eggs
Vitamin C
How it helps oral health:
Vitamin C is essential for healthy gums and connective tissue. Deficiency can lead to gum inflammation and bleeding.
Common food sources:
- Oranges
- Strawberries
- Kiwi
- Bell peppers
- Broccoli
- Tomatoes
B Vitamins (B2, B3, B6, B12, Folate)
How they help oral health:
B vitamins support healthy oral mucosa and gum tissue. Deficiencies can contribute to mouth sores, gum irritation, and inflammation.
Common food sources:
- Eggs
- Dairy products
- Lean meats
- Beans and lentils
- Leafy green vegetables
- Some whole grains
Vitamin K
How it helps oral health:
Vitamin K supports bone metabolism and may help maintain the integrity of jawbone and tooth-supporting structures. It also helps blood clot appropriately after injury.
Common food sources:
- Leafy green vegetables (spinach, kale)
- Broccoli
- Brussels sprouts
- Fermented foods
Bottom Line
We should all do our best to minimize the amount and frequency of refined sugars and carbohydrates we consume.
Sources
- American Academy of Pediatric Dentistry (AAPD): Dietary Recommendations for Infants, Children, and Adolescents
- American Dental Association (ADA): Nutrition and Oral Health
- National Institute of Dental and Craniofacial Research (NIDCR): Dental Caries
- Moynihan & Kelly, Effect on Caries of Restricting Sugars Intake, Journal of Dental Research