What Are the Common Causes of Tooth Decay?

Tooth decay is one of the most common dental problems, affecting people of all ages. It’s caused by the breakdown of tooth enamel due to acids produced by bacteria in your mouth. At South Bridge Dental Practice, we believe that understanding the causes of tooth decay is the first step toward preventing it. Let’s take a closer look at what puts your teeth at risk.

1. Poor Oral Hygiene

Skipping brushing or flossing allows plaque—a sticky film of bacteria—to build up on your teeth. Plaque produces acids that attack tooth enamel, leading to cavities over time. Regular brushing and flossing are essential to keep plaque at bay.

2. High-Sugar and Starchy Diets

Sugary and starchy foods provide a feast for bacteria in your mouth. When bacteria consume these carbohydrates, they produce acids that weaken your enamel. Common culprits include:

• Sweets and chocolates

• Sugary drinks like soda and fruit juices

• Refined carbohydrates like bread, pasta, and chips

3. Frequent Snacking

Snacking throughout the day increases the time your teeth are exposed to harmful acids. Without breaks, your saliva—which neutralizes acids and helps repair your enamel—doesn’t have time to do its job effectively.

4. Dry Mouth (Xerostomia)

Saliva plays a critical role in protecting your teeth by washing away food particles and neutralizing acids. If you have dry mouth due to medications, dehydration, or medical conditions, you’re at a higher risk of tooth decay.

5. Not Drinking Enough Water

Water helps rinse away food debris and sugars that bacteria feed on. Fluoridated water is especially beneficial because it strengthens tooth enamel and protects against decay.

6. Acidic Foods and Drinks

Consuming acidic foods and beverages—like citrus fruits, vinegar-based dressings, and fizzy drinks—can erode enamel over time, making your teeth more vulnerable to decay.

7. Poor Dental Visits

Skipping routine dental checkups and cleanings can lead to unnoticed decay. Professional cleanings at South Bridge Dental Practice remove tartar and plaque buildup in areas your toothbrush can’t reach, reducing your risk.

8. Misaligned or Crowded Teeth

Teeth that are crooked or tightly packed together can create hard-to-clean spaces where plaque and food particles accumulate, increasing the likelihood of decay.

9. Genetics

Some people are more prone to tooth decay due to genetic factors, such as the strength of their enamel, saliva composition, or susceptibility to bacteria.

10. Teeth Grinding (Bruxism)

Grinding your teeth can wear down enamel, exposing the softer layers underneath. This makes your teeth more vulnerable to decay.

How to Protect Your Smile

To prevent tooth decay, adopt these healthy habits:

• Brush your teeth twice a day with fluoride toothpaste.

• Floss daily to clean between your teeth.

• Limit sugary snacks and drinks.

• Drink plenty of water and avoid acidic beverages.

• Visit South Bridge Dental Practice regularly for check-ups and cleanings.

Take Control of Your Oral Health

Tooth decay is preventable with the right care and habits. If you’re concerned about cavities or want to learn more about protecting your smile, book an appointment with us at South Bridge Dental Practice today. Together, we’ll keep your teeth healthy and strong for years to come.