Cracked
Teeth

The most common causes include repetitive stress from grinding or clenching, large existing fillings that leave thin walls of tooth structure, and sudden impact from biting something unexpectedly hard. Temperature cycling — repeatedly consuming very hot then very cold foods — can also weaken enamel over time. In many cases there is no single event; small structural weaknesses accumulate gradually until the tooth eventually gives way.

In most cases, yes. The ability to save a cracked tooth depends on how far the crack extends and in which direction. Cracks confined to the crown of the tooth, above the gumline, are generally restorable with a veneer or crown. If the crack extends into the root or splits the tooth vertically through the root, extraction may be necessary. Early assessment significantly increases the chance of a predictable repair.

The decision depends on how much healthy tooth structure remains after the crack is addressed. When the damage is limited to the visible front surface and the underlying structure is sound, a veneer can restore shape and strength. When a large portion of the tooth is compromised — for example, if a deep crack wraps around from the biting surface or the tooth has already been heavily filled — a crown provides full-coverage protection and a more predictable long-term outcome.

Some cracks cannot be predicted or prevented, but several measures reduce the risk significantly. If you grind or clench your teeth, a custom night guard protects tooth surfaces from excessive load. Avoiding habits such as chewing ice, biting nails, or opening packaging with your teeth reduces surface stress. Regular dental reviews allow early detection of structural weakening, including teeth with old large fillings that may benefit from a crown before fracture occurs.

Unlike bone, tooth structure does not regenerate or heal once it is cracked. A superficial craze line in the enamel may remain stable indefinitely without treatment, but a true crack that extends into the dentine will not close or repair itself. Without treatment, it is likely to deepen over time, especially under regular biting forces. The sooner a crack is assessed, the more conservative and predictable the repair tends to be.

It depends on the symptoms. A crack with no pain or sensitivity can usually wait for a scheduled appointment within a few days. However, if you are experiencing sharp pain when biting, throbbing or spontaneous pain, swelling, or a visible piece of tooth has broken away, it should be treated as an urgent concern. Our Gold Coast practice offers same-day emergency assessments for patients in acute discomfort to stabilise the tooth and prevent further damage.

Not always. Some cracks cause sharp pain when biting or releasing pressure, while others produce sensitivity to temperature. Superficial cracks on the outer enamel may cause no symptoms at all. The absence of pain does not mean a crack is harmless. Cracks can deepen over time, and early assessment is the most reliable way to prevent the problem from progressing to a point that requires more complex treatment.

Craze lines are hairline cracks confined to the outer enamel surface. They are extremely common, usually cause no symptoms, and rarely require treatment beyond monitoring. A fracture extends deeper, into dentine or beyond, and typically causes symptoms such as pain on biting, temperature sensitivity, or a visible break. The distinction matters because the treatment approach differs significantly.

If a crack extends into the pulp, the inner chamber containing the nerve and blood supply, inflammation or infection can develop. This typically causes more persistent or spontaneous pain. In these cases, root canal treatment is usually required before a crown is placed. Root canal treatment removes the inflamed or infected tissue, relieves symptoms, and allows the tooth to be preserved with a crown long-term.

During your appointment at our Southport clinic, your dentist will walk you through each diagnostic step so you understand what is being assessed. The process is straightforward and typically takes around 20 minutes. It may include transillumination, where a light is passed through the tooth to reveal hidden fracture lines, and bite tests using a small cushion to pinpoint where the discomfort originates. X-rays are taken when deeper involvement is suspected. In some cases, an old filling needs to be removed before the full extent of the crack becomes visible.

An untreated crack can progress in several ways. It may deepen under biting pressure until it reaches the nerve, causing persistent pain and requiring root canal treatment. In some cases, the crack can extend below the gumline or split the tooth vertically, at which point the tooth may no longer be restorable and extraction becomes necessary. Bacteria can also enter through the crack and cause infection. Early intervention preserves more tooth structure and keeps treatment simpler.

The cost depends on the type and extent of the fracture and the treatment required. Simple composite bonding for a small chip may start from a few hundred dollars, while a porcelain crown for a deeper crack is a larger investment. We provide a detailed treatment plan with all fees outlined after your initial assessment, so there are no surprises. Your health fund rebate will also be confirmed before treatment begins.