What Are Dentin Tubules?

The tooth is not a solid piece of body tissue. Rather, it has layers of tissues that serve unique functions. One of these layers, called dentin, lies right under the enamel surface. Tubules that pass through the dentin help you feel sensation in your teeth. While they are a part of normal tooth function, issues can arise.

What Are Dentin Tubules?

Dentin tubules are microscopic channels that radiate from the underside of the enamel surface to the inside of the tooth, called the pulp. They get their name because they travel through the dentin. Dentin is the major structural component and middle layer of the tooth, supporting the brittle enamel on the exterior. It is less mineralized than the enamel and forms the bulk of the tooth.

These small, hollow canals in the dentin carry sensations from the outside of the tooth to the inside. This process is often blamed for the sensitivity patients feel when the enamel is worn down. The tubules transmit hot and cold sensation and sticky and acidic stimuli (food) can affect the unprotected parts of the tooth, which stimulates the nerves and cells inside the tooth, causing discomfort, states the American Dental Association.

Managing Dentinal Hypersensitivity

People with tooth sensitivity should consult with their dental professional to assure the pain or sensation is due to exposed dentin on their tooth surfaces and not a more serious dental disease or condition. If found to be dentinal sensitivity alone, patients can help relieve the discomfort with over-the-counter products that are effective with continued use. For example, Colgate Sensitive Prevent & Repair toothpaste provides 24/7 sensitivity protection with continued use and twice daily brushing.

Take good care of your oral health to protect your dentin tubules and reduce your risk of painful hypersensitivity before it becomes an issue. Remember to follow proper daily care and to keep regular appointments with your dental hygienist.

This article is intended to promote understanding of and knowledge about general oral health topics. It is not intended to be a substitute for professional advice, diagnosis or treatment. Always seek the advice of your dentist or other qualified healthcare provider with any questions you may have regarding a medical condition or treatment.

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What Are The Different Parts Of A Tooth?

Each tooth has several distinct parts; here is an overview of each part:

  • Enamel – this is the outer and hardest part of the tooth that has the most mineralized tissue in the body. It can be damaged by decay if teeth are not cared for properly.

  • Dentin – this is the layer of the tooth under the enamel. If decay makes it through the enamel, it next attacks the dentin — where millions of tiny tubes lead directly to the dental pulp.

  • Pulp – this is the soft tissue found in the center of all teeth, where the nerve tissue and blood vessels are located. If tooth decay reaches the pulp, you usually feel pain and may require a root canal procedure.