What Are Mandibular Tori?

Using your tongue, feel the inside of your lower jaw in the area where the roots of your lower teeth are located. Now feel the middle roof of your mouth. Do you feel any hard bumps? There is no need to worry. These bumps are most likely harmless growths of extra bone called tori.

According to the Journal of Clinical and Diagnostic Research, tori (or torus if it is a single bump) are harmless growths of bone within the mouth. They are simply defined as hills of bone covered by normal gum tissue and are considered to be ordinary and completely healthy. They can present on one side of the mouth, but are most likely to be found bilaterally. Three places patients are most likely to have them are: mandibular lingual tori according to Dentistry Today, which are located on the tongue side of the lower jaw; maxillary tori, which are found on the roof of the mouth and are also called tori palatini; and the cheek side of upper molars, also known as buccal exostoses.

Where Do They Come From?

Tori are slow-growing and can vary in size. Many people have them in their mouth but do not even realize they are there until they are examined and pointed out by a dental professional. Tori appear to be ethnically and genetically related, and according to the Journal of Gerontology, tori are more common in males. Some dental professionals theorize that patients who clench their jaw and grind their teeth have a higher incidence of tori. Others state injuries or trauma to the face and jaw create a greater incidence of tori.

How Are They Treated?

Most of the time tori do not interfere with daily eating, drinking or speaking. Dental professionals generally monitor the size and shape of tori, but do not recommend treatment of the areas unless they begin to interfere with routine oral home care or basic daily functions. In the event that tori grow to a point where they touch in the middle of the mouth, or the patient needs braces or a removable denture, a dental professional may recommend the removal of tori. The process of tori removal is done through outpatient surgery in the dental setting.

Can They Be Painful?

Sometimes bony growths of tori can become inflamed if a patient scrapes the tori when eating, or a dental professional may abrade a tori when taking dental X-rays. In this instance it is important to cleanse the injured area with a germ-killing fluoride toothpaste or rinse, such as Colgate Total® Clean Mint Toothpaste or Colgate Total® Advanced Pro-Shield™ Mouthwash, to decrease bacterial counts while the area is healing.

When patients notice a torus, they may be concerned that it is a sign of oral cancer. Tori are not cancerous, nor do they evolve into cancer. If you notice any suspicious or concerning areas in your mouth, it is best to refer your question to a dental professional.

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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.