What Causes Tori in the Mouth and Should You Be Concerned?

Oral tori are common, benign bony growths that can develop in the mouth. These formations consist of extra bone covered by normal gum tissue, and while they may seem unusual, they are typically harmless. Many individuals discover them during routine dental examinations. Understanding these growths can help alleviate concerns about their nature.

Understanding Oral Tori

Oral tori are bony outgrowths that can appear in various parts of the oral cavity. They are slow-growing and generally painless, often remaining asymptomatic. Their size and shape can vary significantly among individuals, ranging from small, barely noticeable bumps to larger protrusions.

There are three primary types of oral tori, named for their typical locations. Torus palatinus is a bony growth found on the midline of the hard palate, which is the roof of the mouth. These can be flat, nodular, spindle-shaped, or lobular. Torus mandibularis refers to bony growths that develop on the inner side of the lower jaw, beneath the tongue, usually near the premolars and molars. These often occur bilaterally, meaning on both sides of the jaw. A third type, buccal exostoses, forms on the outer surfaces of the upper or lower jaw, typically in the premolar and molar areas.

Key Factors in Tori Development

The development of oral tori is often attributed to a combination of genetic and environmental factors. Genetics plays a significant role, with research suggesting that tori tend to run in families, indicating a hereditary predisposition. Additionally, individuals with higher bone density may be more prone to developing oral tori.

Environmental influences, particularly mechanical stress on the jaw and teeth, are also considered major contributors. Chronic teeth grinding, known as bruxism, and jaw clenching can exert pressure on the jawbone, stimulating excess bone growth. Chewing habits, such as chewing on hard foods, may also contribute to their formation.

Stress may indirectly influence tori development through its association with bruxism and lifestyle habits. Chronic stress can affect bone remodeling. Nutritional factors, such as deficiencies in vitamin D and calcium, have also been linked to tori formation, as these nutrients are important for bone growth. A diet high in certain components, like saltwater fish, has been observed in populations with higher prevalence of tori, suggesting a dietary connection.

When Tori Require Attention

While oral tori are generally harmless and do not require treatment, certain situations may necessitate professional evaluation or intervention. Tori can become problematic if they interfere with the placement or fit of dental prosthetics, such as dentures, crowns, or braces. Large tori can obstruct the movement of the tongue, potentially leading to difficulties with speech, chewing, or swallowing.

The soft tissue covering tori can be thin and fragile, making them susceptible to irritation or ulceration from accidental biting, trauma during eating, or even during dental cleanings. If such irritation occurs, it can cause discomfort and increase the risk of infection. Tori located near teeth can make proper oral hygiene challenging, leading to plaque buildup and a higher risk of gum disease or tooth decay. In these cases, surgical removal may be considered to alleviate symptoms or facilitate other dental procedures.