Wondering why your child keeps getting cavities? Learn the common causes of tooth decay in children, prevention tips, and when to visit a children’s dentist in Stanmore.

Does Your Child Keep Getting Cavities?

It can be frustrating when your child develops cavities despite brushing their teeth every day. Many parents wonder if they’re doing something wrong, but the truth is that tooth decay is influenced by several factors, not just brushing.

Cavities are one of the most common childhood health conditions, yet they’re often preventable with the right combination of good oral hygiene, diet, regular dental visits, and preventive care.

At Centre of Dental Excellence in Stanmore, we help families understand why cavities develop and work with parents to protect young smiles through education, prevention, and personalised treatment.

What Causes Cavities in Children?

A cavity (dental decay) develops when bacteria in the mouth feed on sugars from food and drinks. These bacteria produce acids that gradually weaken tooth enamel.

Over time, if the enamel continues to break down, a hole (cavity) can form.

Several factors can increase a child’s risk.

1. Frequent Sugary Snacks and Drinks

It’s not only how much sugar children eat, it’s how often they’re exposed to it.

Frequent snacking or sipping sugary drinks throughout the day gives bacteria more opportunities to produce acid.

Common hidden sources include:

• Fruit juices
• Flavoured milk
• Fizzy drinks
• Sweets
• Biscuits
• Dried fruit
• Sticky snack bars

Encouraging water between meals can help reduce the risk of decay.

2. Brushing Isn’t Quite Effective Yet

Many children need help brushing until they’re around seven or eight years old, as they may not yet have the coordination to clean every surface properly.

Parents should supervise brushing twice a day using a fluoride toothpaste appropriate for their child’s age.

3. Teeth Aren’t Being Cleaned Between

As adult teeth begin to appear close together, food and plaque can collect between them.

Cleaning between the teeth with floss or other recommended aids may become an important part of your child’s oral hygiene routine.

4. Deep Grooves in Back Teeth

Molars often have natural pits and grooves where food and bacteria can become trapped.

For some children, fissure sealants may be recommended to help protect these vulnerable surfaces.

5. Missing Regular Dental Check-Ups

Early decay doesn’t always cause pain.

Regular dental examinations allow problems to be detected and managed before they become larger cavities requiring more extensive treatment.

6. Dry Mouth or Certain Medical Conditions

Some medications and health conditions can reduce saliva, which normally helps protect teeth by washing away food particles and neutralising acids.

If your child has a medical condition or takes regular medication, let your dentist know so they can assess any additional risk.