Sharp Tooth Tongue Trauma

When a Tooth is Hurting more than Your Smile

Have you ever noticed a spot or ulcer on the side of your tongue that is sore and just won’t heal? One common cause is tongue trauma from a sharp or broken tooth. While it may seem like a minor irritation, repeated rubbing against the tongue can cause pain, difficulty eating, speaking, and even persistent ulcers.

What are the Causes?

Your tongue is covered by delicate tissue that can be easily injured. A chipped tooth, fractured filling, sharp cavity edge, or rough dental restoration can repeatedly rub against the tongue, creating a traumatic ulcer or sore. Local trauma from sharp teeth is one of the most common causes of oral ulceration and tongue injuries. People who grind their teeth, clench their jaws, or have crowded or broken teeth may be at greater risk because these conditions can create sharp edges that continually irritate the tongue.

What does it look like?

Symptoms may include:

• Pain or tenderness on the tongue.
• A red, white or yellow ulcer surrounded by redness.
• A sore spot that repeatedly reopens.
• Difficulty eating spicy, acidic or hot foods.
• Discomfort when talking or swallowing.

The sides of the tongue are particularly vulnerable because they sit close to the teeth throughout the day.

Can this heal on its own?

In many cases, yes, it can but only if the source of the irritation is removed. Studies have found that traumatic ulcers caused by sharp teeth often heal within 3 weeks once the offending tooth or restoration has been smoothed or repaired. However, if the trauma continues, the ulcer may persist and become increasingly painful. Any ulcer that lasts longer than three weeks should be assessed immediately by a dentist or GP.

Helpful Tips

• Check for chipped, cracked or rough teeth.
• Rinse with warm salt water to help keep the area clean.
• Avoid spicy, acidic, or very hot foods until the area heals.
• Maintain good oral hygiene to reduce the risk of infection.
• Schedule a dental appointment to identify and remove the source of trauma.

Your dentist may smooth the sharp edge, repair a filling, or recommend further treatment depending on the cause.