A root cavity, also known as root decay or root caries, is tooth decay that affects the root of the tooth, the part usually hidden beneath the gum line. Unlike cavities in the crown of the tooth, root cavities develop when the gums recede, exposing the tooth root to bacteria and acids in the mouth.
Causes of Root Cavities
Several factors contribute to the formation of root cavities:
- Gum recession: This is the primary cause. Gum recession can result from gum disease (periodontitis), aggressive brushing, or genetics. [This is supported by several sources, including the provided text stating that root cavities “attack the hidden part of the tooth, the root…They are likely to occur when the gum has receded.”]
- Bacteria and acid: Once the root is exposed, bacteria and acids from plaque can easily attack the dentin, the softer tissue of the tooth root, leading to decay.
Symptoms of Root Cavities
Root cavities may not always present obvious symptoms in their early stages. However, potential signs include:
- Sensitivity to temperature: Experiencing pain or discomfort when consuming hot or cold foods and drinks.
- Brown or black discoloration: Noticeable staining near the gum line.
- Toothache: A persistent or intermittent ache in the affected tooth.
Treatment of Root Cavities
Treatment for root cavities depends on the severity of the decay:
- Filling: For early-stage cavities, the dentist will remove the decayed area and fill it with a dental material, similar to the treatment of cavities in the crown of the tooth. [This is confirmed by several sources that mention filling as a common treatment.]
- Root canal: If the decay has reached the pulp (the inner part of the tooth containing nerves and blood vessels), a root canal may be necessary to remove the infected pulp and prevent further damage. [Healthline supports this, stating that if decay reaches the pulp, a root canal may be needed.]
Prevention of Root Cavities
Preventive measures focus on maintaining good oral hygiene and preventing gum recession:
- Gentle brushing: Brush your teeth twice daily with a fluoride toothpaste using gentle, circular motions.
- Flossing: Regular flossing helps remove plaque and food particles from between your teeth and beneath the gum line.
- Regular dental checkups: Visiting your dentist for routine checkups and cleanings helps detect and treat cavities in their early stages. [Colgate recommends these preventive measures.]
- Treating gum disease: Prompt treatment of gum disease prevents further gum recession.
