What Are Dental Caries? Treatments, Signs, and Symptoms

3d illustration of molars with cavities on the gumline
Last Updated : December 11, 2025

Summary

Your tooth suddenly starts aching. Or it hurts when you eat something sweet. Or you notice a dark spot on your tooth. Is it a problem? Dental caries, the disease that causes tooth decay and cavities, is among the most widespread oral health conditions. But the good news is they're largely preventable and treatable with the right care. Let's explore what dental caries are, how to recognize them, and how to prevent them to keep your teeth healthy.

Key Takeaways

  • Early detection through regular dental check-ups help identify and address dental caries before they progress
  • Prevention is key. Effective preventive measures include regular brushing and flossing. limiting sugary foods, and using fluoride products
  • Timely treatment can address cavities promptly, prevent more serious dental issues, and preserve tooth form and function
  • Healthy lifestyle choices and good habits play a crucial role in preventing dental caries. These include eating a balanced diet and good oral hygiene practices

Table of Contents

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This blog has been reviewed and approved by Dr Robert Lee, a dental professional of 35 years

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Key Takeaways

What Are Dental Caries?

“Dental Caries” is the medical term for tooth decay or cavities. Caries occur when harmful bacteria in your mouth feed on sugars and starches from the foods and drinks you consume. Those bacteria produce acids that gradually weaken (or demineralize) tooth enamel. Over time, this process can lead to holes or cavities in your teeth.

Dental Caries Signs and Symptoms

Early-stage tooth decay doesn’t usually cause noticeable symptoms. However, as decay progresses, symptoms include:

  • Tooth Sensitivity: Discomfort or pain when consuming hot, cold, or sweet foods and beverages
  • Early Sign - White Spots: The first sign of caries can be a chalky white spot on the tooth where minerals have been lost.
  • Progression to Cavities: As decay progresses, these spots may become light brown and eventually develop into visible dark spots, pits, or holes on the surface of your teeth.
  • Toothache: Persistent pain in a tooth that worsens when chewing or touching the tooth
  • Swelling or Abscess: In advanced cases, an infection can cause swelling in the face or jaw. A pocket of pus and abscess may form.

If you notice any of these symptoms, promptly consult a dentist or dental hygienist to prevent further damage.

Treatment Options

Woman patient getting their teeth examined in a dentist’s office image

Regular dental visits are crucial for the early detection and treatment of dental caries. Treatment for dental caries depends on the severity of the tooth decay.

  • Fluoride Treatments: Fluoride can help remineralize tooth enamel and help reverse minor decay
  • Fillings: A dentist removes the decayed portion of the tooth and fills it with composite resin, amalgam, or porcelain restoration
  • Crowns: If a large portion of the tooth is decayed, a crown may be placed over the tooth to restore its shape and function
  • Root Canals: When decay reaches the soft tissue inside the tooth, called the pulp, a root canal may be necessary to remove the infected tissue, seal and save the tooth
  • Tooth Extraction: In severe cases where the tooth cannot be saved, extracting the tooth may be the last resort

Preventing Dental Caries

  • Brush Regularly: Brushing with fluoride toothpaste at least twice a day strengthens tooth enamel and helps prevent cavities
  • Floss Daily: Helps remove food particles and plaque between your teeth that your toothbrush can’t reach
  • Limit Sugary Foods and Drinks: Reduce the amount of sugary snacks and beverages you consume because they contribute to acid production by bacteria
  • Use Fluoride Products: Fluoride strengthens tooth enamel and prevents tooth decay
  • Regular Check-ups: See your dentist and dental hygienist regularly for professional cleanings and exams. This helps issues to be diagnosed and addressed early, helping to prevent serious problems down the road
  • Consider Sealants: Protective coatings applied to the chewing surfaces of back teeth, they help prevent cavities on teeth that are harder to brush effectively

Summary

Dental caries, commonly known as cavities, are a common yet preventable dental issue caused by the interaction of bacteria and sugars in the mouth. Dental caries is the disease process caused by the interaction of bacteria and sugars that results in tooth decay. Recognizing early signs, such as tooth sensitivity or pain and noticing holes or pits in a tooth, is an important step in stopping damage. Treatment options vary depending on the severity of the tooth decay. These range from fluoride treatments to remineralize the tooth’s enamel to fillings and root canals for advanced decay. Tooth extraction may be warranted for the most severe cases. Practicing good oral hygiene through regular brushing and flossing as well as limiting sugary substances are the best ways to significantly reduce dental caries.

Avoid Cavities, Tooth Decay and Tartar with Oral-B

Man brushing his teeth in front of a mirror image

Keep your teeth clean and cavity-free. Things like tooth decay and tartar happen when plaque forms on teeth as a sticky film. Plaque contains bacteria that feed on sugar from food and drinks. As these bacteria metabolize sugar, they release acids that can erode tooth enamel. This can lead to cavities and other problems. But help is just a toothbrush away. Here are a few suggestions to help establish a regular, effective routine.

There is a connection between oral health and systemic health. That’s why Oral-B, in partnership with Crest, is committed to championing oral health for all, conducting research and creating products to help with a wide range of oral health conditions. Oral-B products are scientifically proven to protect teeth and gums from the leading causes of tooth decay, gum disease, and tooth loss.

FAQs

  • Can dental caries be reversed?
  • What do dental caries look like?
  • What is the difference between caries and cavities?
  • Is there a way to assess my risk of getting dental caries?
  • Can I get a vaccine for dental caries?

Sources

Table of Contents

  • What Are Dental Caries?
  • Dental Caries Signs and Symptoms
  • Treatment Options
  • Preventing Dental Caries
  • Summary
  • Avoid Cavities, Tooth Decay and Tartar with Oral-B

  • FAQs
  • Sources
drlee-image

This blog has been reviewed and approved by Dr Robert Lee, a dental professional of 35 years

LEARN MORE >

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