Torus Palatinus and Mandibularis: The Bony Bumps That Aren't a Problem

Dental Problems and Symptoms · 8 min read

Torus Palatinus and Mandibularis: The Bony Bumps That Aren't a Problem

Reviewed January 14, 2025
Written by
1PleasantonDentist Editorial Team, Editorial team
Reviewed by
Editorial team

Image: Latrobebohs · BY-SA 3.0 · Source

A hard bump on the roof of your mouth or inner jaw is often a completely normal, benign bone growth. Here's what these common structures actually are.

What Is a Torus Palatinus?

A torus palatinus is a bony growth located on the midline of the hard palate, the roof of the mouth, varying in size and shape from a small, subtle bump to a larger, more pronounced ridge.

What Is a Torus Mandibularis?

A torus mandibularis is a similar type of bony growth, but located on the inner surface of the lower jaw, typically near the premolar teeth, and can occur on one or both sides.

Are These Growths Cancerous?

No, these are benign, non-cancerous bone growths, made of normal, dense bone tissue that has simply grown in excess in these specific locations, unrelated to any malignant process.

Why Do These Growths Develop?

The exact cause isn't fully understood, though a combination of genetic factors and possibly some environmental or functional factors, such as bite forces, have been proposed as contributing to their development, and they're often noted to run in families.

Are Tori Common?

Yes, these are considered relatively common findings, appearing in a meaningful portion of the general population, with tori palatinus and tori mandibularis each having their own typical prevalence patterns across different populations studied.

Do Tori Cause Any Symptoms?

Most tori don't cause any pain or functional problems on their own, and many people go years without ever noticing them until a dentist points one out during a routine exam, or until the growth becomes large enough to be noticed independently.

Can Tori Ever Cause Problems?

In some cases, particularly if they grow quite large, tori can make wearing a denture more challenging, since the growth can interfere with proper denture fit, and the overlying tissue covering a torus is sometimes more prone to irritation from sharp or hard foods given its thinner covering compared to surrounding areas.

Do Tori Need to Be Removed?

Generally, no, most tori don't require any treatment unless they're causing a specific functional problem, most commonly interference with denture fit, or in rare cases, significant size causing other issues, making removal a situational decision rather than a routine recommendation.

How Are Tori Removed If Needed?

This is a minor surgical procedure performed under local anesthesia, involving removal of the excess bone growth, with recovery generally similar to other minor oral surgical procedures involving bone.

Can Tori Grow Larger Over Time?

Yes, in some individuals, tori can gradually increase in size over years, which is part of why your dentist monitors them during routine checkups, even though most don't require any active intervention despite this gradual growth.

Should You Mention a Newly Noticed Bump to Your Dentist Even If You Suspect It's a Torus?

Yes, having any new growth in your mouth evaluated by your dentist is always a reasonable step, both for your own peace of mind and to confirm the diagnosis is genuinely a benign torus rather than something else requiring different evaluation.

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