Cracked Tooth: Signs, Treatment Options and What Happens If You Wait

A cracked tooth doesn’t always announce itself with dramatic pain. Sometimes it’s a sharp twinge when you bite down. Sometimes it’s cold sensitivity that comes and goes.

The problem is that cracks are easy to dismiss — and easy to delay. A crack that’s manageable today can become a much bigger issue in a few months. Here’s what you need to know.

Types of Tooth Cracks

Not all cracks are the same. The type determines how serious it is and what treatment is needed.

• Craze lines are tiny, surface-level cracks in the outer enamel that develop from normal wear. They don’t cause pain and rarely require treatment, though they can affect appearance.
• A fractured cusp refers to a piece of the tooth’s chewing surface breaking off, usually around a filling. Because it usually doesn’t affect the inner tooth, pain tends to be mild. A crown typically resolves it.
• A cracked tooth begins at the chewing surface and extends downward toward the root, which is commonly referred to as cracked tooth syndrome. The extent of the crack determines whether the tooth is restorable.
• A split tooth occurs when the crack has divided the tooth into two distinct segments. Partial or full extraction is usually required at this stage.
• A vertical root fracture starts at the root and works upward. These are often symptom-free for a long time, which makes them difficult to detect early. They’re typically discovered when the surrounding bone or gum becomes infected.

Symptoms of a Cracked Tooth

Cracked tooth symptoms can be inconsistent, which is part of why people put off getting them checked.

Pain when biting or chewing is the most common complaint — particularly when you release pressure rather than apply it. This is a hallmark sign of cracked tooth syndrome. The crack flexes under load and sends a sharp signal when it springs back.

Temperature sensitivity is also common, especially to cold. Unlike a cavity, where discomfort tends to linger, a cracked tooth often causes pain that passes quickly.

In more advanced cases, the gum around the affected tooth may become swollen or tender — a sign the crack has allowed bacteria to reach the inner structure of the tooth or root.

If you’re noticing any of these, even intermittently, get it assessed. Intermittent doesn’t mean stable.

What Causes a Cracked Tooth

• Teeth grinding (bruxism) is one of the leading causes. Repeated excessive force — especially during sleep — places sustained pressure on teeth that eventually compromises their structure. Many people don’t know they grind until a crack is found at a dental check-up.
• Large existing fillings weaken the remaining tooth structure over time, making those teeth more prone to fracturing.
• Chewing hard foods — ice, hard lollies, unpopped popcorn kernels — can cause sudden fractures, particularly in teeth already under stress.
• Trauma from a fall or direct impact can crack a tooth immediately or create structural weakness that develops into a crack later.
• Age is also a factor. Teeth become more brittle with age, and cracks are more common in people over 40.

Treatment Options for a Cracked Tooth

Treatment depends on the type of crack, how far it has extended, and whether the pulp is involved.

Dental bonding is suitable for minor surface cracks or chips when the tooth structure is still intact. Composite resin matching the tooth colour is placed and shaped to restore appearance and function.

A dental crown is the most common treatment for cracked tooth syndrome. It covers the entire tooth, holds it together, and prevents the crack from widening — recommended when the crack is significant but hasn’t reached the pulp.

Root canal treatment is needed when the crack has extended into the pulp. The tooth is treated by removing the damaged pulp, cleaning and sealing the canal, and placing a crown over it. It allows the tooth to be kept rather than removed.

Tooth extraction is the last resort — when a crack is too severe to restore, such as a split tooth or vertical root fracture with major bone loss, a dental implant or bridge can be used afterwards to replace the tooth.

The earlier a crack is assessed, the more treatment options remain available.

What Happens If You Wait

A crack progresses. Gradually in some cases, suddenly in others.

A hairline crack in a tooth that reaches the pulp will cause infection. What was a straightforward crown case becomes a root canal — or an extraction.

Without treatment, an infection can extend to the surrounding bone and adjacent teeth, leading to greater damage and more involved treatment.

There’s also a practical cost to waiting. Early treatment is less involved than treatment for a deteriorated tooth. A fractured cusp caught early is manageable. A split tooth is not.

If symptoms come and go, that’s still reason enough to have it reviewed. Early assessment gives you the most options.

Frequently Asked Questions About Cracked Teeth

Do cracked teeth heal without treatment?

No. Tooth enamel cannot regenerate. A crack will not close or repair itself — without treatment, it will remain or worsen. The only way to stop it progressing is through professional dental care.

How is a cracked tooth diagnosed?

Some tooth cracks cannot be seen visually and require more than symptoms to confirm. A dental examination may include a bite test, special dye to highlight the fracture, or X-rays to assess how far it extends.

Is a chipped tooth the same as a cracked tooth? Not exactly. A chipped tooth involves a piece of enamel breaking away — a physical loss of structure. A cracked tooth has an intact surface but a fracture running through it. Both need assessment, but they often require different treatments.

Can a cracked tooth be saved?

In many cases, yes — particularly when the crack hasn’t reached the pulp or root. Crowns and root canal treatment can preserve the tooth. The sooner it’s treated, the better the chance of keeping it.

What happens if a cracked tooth gets infected? Bacteria entering through the crack can reach the pulp and cause an abscess. This leads to significant pain, swelling, and potential spread to surrounding tissue. Root canal treatment or extraction is typically required at that point.

Cracked Tooth Treatment in Canley Heights

If you’ve noticed tooth pain when biting or sensitivity that keeps coming back, have it reviewed before it progresses.

At Canley Heights Dental Care, we see patients from Canley Heights, Canley Vale, Cabramatta, Fairfield, and Wakeley. We’ll assess the crack, explain what’s happening, and walk you through your options.

Call us on (02) 9199 9678 or book online. Find us at 1/229 Canley Vale Road, Canley Heights.