Understanding Dental Caries: What You Need to Know

Learn how cavities form, what signs to watch for, and how to keep your teeth strong and healthy.
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Posted on July 12, 2025
Cross-section model of a tooth showing internal structure and dental decay.
A 3D model showing the internal layers of a tooth, often affected by cavities.

What Are Dental Caries?

Dental caries—commonly known as cavities—are one of the most common oral health problems worldwide. They occur when bacteria in the mouth produce acids that break down the protective enamel layer on your teeth. If left untreated, this decay can progress deeper into the tooth, causing pain, infection, and even tooth loss.

🦷 Want to know what makes up your tooth? Learn more in our Tooth Anatomy Guide.

Causes of Cavities

Cavities develop over time due to several contributing factors, including:

  • Plaque buildup: A sticky film of bacteria that coats your teeth.
  • Sugary and acidic foods: These feed bacteria and accelerate enamel erosion.
  • Poor oral hygiene: Skipping brushing or flossing allows plaque to remain.
  • Dry mouth: Saliva helps neutralize acid; a lack of it increases decay risk.
  • Inadequate fluoride: Fluoride helps remineralize enamel and resist decay.

Signs You May Have a Cavity

If you notice any of the following symptoms, it’s time to see your dentist:

  • Tooth sensitivity to sweets, cold, or heat
  • Visible holes or dark spots on the tooth
  • Pain when chewing
  • Bad breath or an unpleasant taste

Learn more about Tooth Sensitivity and what it may be telling you about your oral health.

How to Prevent Dental Caries

Good oral hygiene and routine dental visits can significantly reduce your risk of cavities. Here’s how to stay ahead:

  • Brush twice a day with fluoride toothpaste
  • Floss daily to remove plaque between teeth
  • Visit your McKinney dentist for regular cleanings and exams
  • Limit sugary and acidic snacks and beverages
  • Consider fluoride treatments or dental sealants

🧠 Explore How to Brush Your Teeth Properly for a refresher on technique and timing.

Why Prevention Matters

Preventing cavities not only protects your smile but also reduces the risk of future dental procedures like fillings, crowns, or root canals. Early detection and treatment are key to maintaining long-term oral health.

Final Thoughts

Dental caries are preventable with the right habits and support. At Pecan Tree Family Dentistry, we provide personalized care and preventive treatments to help our McKinney, TX community keep their smiles bright and healthy.

📞 Schedule your next checkup by calling us at (972) 562-0767 or contact us online.

Dr.-Peter-J.-Kim

By Peter J. Kim, DDS

Dr. Peter J. Kim, DDS, is a highly skilled dentist in McKinney, TX. He earned his dental degree from the prestigious University of Michigan School of Dentistry and completed his residency in New York City. Dr. Kim is passionate about providing exceptional dental care and stays at the forefront of the field through advanced techniques and continuous education. Dedicated to serving the McKinney community, Dr. Kim offers a wide range of services, ensuring personalized care for every patient.