Cracked Tooth Treatment

A tooth crack is a break in the continuity of the tooth — typically appearing as a fine line visible on the enamel surface. Cracks can also extend into the dentin, which is the inner layer of the tooth beneath the enamel. They develop as a result of enamel wear or excessive force placed on the tooth. Front teeth are the most commonly affected, as their enamel is thinner and therefore more vulnerable.

The main signs that a tooth has cracked include:

• Fine vertical lines on the tooth surface
• Discoloration of the tooth
• Localized sensitivity (and occasionally pain)
• A rough or uneven texture on the tooth surface

Telling a tooth crack apart from cavities is actually quite straightforward. A crack may cause the tooth to look yellowed or dull — and only if the dentin has been reached. Tooth decay, by contrast, presents as either a visible pit or a noticeably dark spot. As for distinguishing between a crack in the enamel versus a deeper fracture, the presence of pain is the key indicator. When only the outer enamel layer is affected, there is almost never any pain. However, if the crack has penetrated deeper into the dentin or pulp, the pain can be quite pronounced.

Cracks vary widely in size — from a few millimeters to much larger — depending on factors including the patient’s age, the amount of pressure applied to the tooth, lifestyle habits, and even genetics. Interestingly, cracks are sometimes invisible to the naked eye, particularly when they are hairline-thin or located in hard-to-see areas, such as the inner surface of a tooth.

Tooth cracks are generally classified into two main categories:

Surface cracks. These are confined to the enamel layer and are painless. They may be visible or barely noticeable to the eye. In most cases, surface cracks cause no discomfort beyond a cosmetic concern and do not require urgent treatment.

Deep cracks. These extend into the dentin and sometimes reach the pulp. They are most commonly associated with significant sensitivity and pain, and typically require dental treatment — including, in many cases, a filling or more involved restoration.

Tooth cracks in children and adults differ due to the distinct nature of dental development at different life stages. Children’s enamel is thinner and their teeth are still forming, making them more susceptible to cracking. In adults, teeth are more prone to natural wear and gradual deterioration over time.

When a child’s tooth cracks, it is often the result of trauma, falls, poor oral hygiene, or an unbalanced diet. When an adult’s tooth cracks, stress or bruxism (involuntary teeth grinding) are frequent culprits.

It’s worth understanding that existing cracks do not heal on their own — teeth cannot repair cracks by themselves. However, leaving cracks untreated can lead to a range of complications.

Short-term consequences typically include discomfort and pain, difficulty chewing, and a risk of infection — particularly when deep cracks reach the dentin. Long-term consequences can include tooth decay, bite problems, and in advanced cases of deep, untreated cracks, complete tooth loss.

The consequences differ between children and adults, shaped by a range of factors including age, oral hygiene, and immune health. In children, an untreated crack combined with poor hygiene can lead to malocclusion and infections. In adults, the same crack is less likely to cause bite problems, but will typically result in decay and an overall deterioration of the tooth’s condition.

Preventing cracks in children involves teaching proper, consistent oral hygiene, limiting sugary and highly acidic foods, ensuring the diet is rich in calcium, attending regular dental check-ups, and using mouthguards during contact sports.

Preventing cracks in adults similarly requires consistent oral hygiene, avoiding excessively hard foods, and addressing bruxism — the habit of involuntary teeth grinding — before it causes further damage.