Why Does It Hurt to Bite Down on One Tooth?

Pain When I Bite Down? Here Is What It Could Be:

If it hurts when you bite down on one tooth, it's usually a sign that something has changed within the tooth or the tissues supporting it. Unlike general tooth sensitivity, pain that's isolated to a single tooth often points to a specific problem that requires treatment.

The discomfort may be mild at first, but biting pain rarely resolves on its own. Identifying the cause early can often prevent more extensive dental treatment later.

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A Cracked Tooth Can Cause Pain Before You See Damage

Small cracks are one of the most common causes of pain when biting. These fractures are often too small to see in a mirror and may not appear on dental X-rays.

As you bite down, the crack can flex slightly, irritating the sensitive inner portion of the tooth. Many patients notice a sharp pain when they release their bite because the crack closes again, placing pressure on the nerve.

Cracked teeth are most common in heavily restored teeth, teeth that have experienced trauma or patients who grind and clench their teeth.

Inflammation Inside the Tooth Can Make Biting Painful

Each tooth contains a soft inner tissue called the pulp, which houses the tooth's nerve and blood vessels. If deep decay, a crack or previous dental work irritates the pulp, inflammation can develop. As pressure builds within the tooth, even normal biting forces may become uncomfortable.

Depending on the severity of the inflammation, treatment may involve replacing a filling, placing a crown or performing root canal therapy to remove the damaged tissue and preserve the tooth.

The Ligament Around the Tooth May Be Injured

Every tooth is supported by a thin ligament that acts as a shock absorber during chewing. This ligament can become inflamed if you've bitten something unexpectedly hard, experienced a blow to the mouth or developed an infection around the root of the tooth. Because the ligament becomes compressed every time you bite, even light pressure can produce significant discomfort.

The symptoms often feel very different from sensitivity to hot or cold, making a clinical examination important for determining the true source of the pain.

A High Filling or Crown Can Change Your Bite

If the pain began shortly after dental treatment, the bite may simply need a minor adjustment. A filling or crown that's even slightly higher than the surrounding teeth receives more pressure during chewing. Over time, this excessive force can inflame the supporting ligament and make the tooth sore whenever you bite down.

Fortunately, this is often corrected by making a small adjustment to the restoration, allowing your bite to function evenly again.

Early Treatment Helps Protect the Tooth

Pain when biting is your body's way of telling you that something isn't functioning normally. Whether the cause is a cracked tooth, an inflamed nerve or a bite that's out of balance, prompt treatment often prevents the problem from becoming more serious.

At Clearview Market Dental Care, we'll determine why one tooth hurts when you bite down and recommend treatment that's appropriate for the underlying cause.

Addressing the problem early gives you the best opportunity to relieve discomfort while preserving your natural tooth.