Tooth enamel is the strongest tissue in the human body, capable of withstanding colossal chewing loads. However, even it has a limit of strength. Microscopic damages, which we often ignore or simply do not notice, can undermine the health of a tooth from the inside for years, leading to its sudden loss. One of these hidden threats is a crack.
What Is a Crack in a Tooth and Why It Goes Unnoticed
A crack in a tooth is a structural split of the enamel or deeper layers (dentin and root), which does not always lead to an immediate breaking off of the wall. The main trickery of this pathology lies in its visual invisibility.
Most microcracks in the early stages cannot be detected with the naked eye in a mirror. They can be so thin that even an X-ray misses them (unless the beam passes strictly parallel to the plane of the split). In addition, at first, the defect does not manifest itself physically in any way: the tooth looks intact, the gum is not inflamed, and there is no pain. As a result, a person continues to live a normal life while the crack slowly deepens.
Main Causes of Cracks
Teeth crack not only from extreme injuries. Most often, it is the result of everyday habits and hidden processes. Hard food and bad habits, bruxism, sudden temperature changes, and large fillings can trigger the appearance of cracks.
Symptoms That Should Alert You
Although a crack is difficult to see, over time it begins to give off hidden signals. The so-called “cracked tooth syndrome” can manifest as:
- pain when biting down;
- a rapidly passing acute reaction to cold, hot, sweet, or sour;
- an aching pain or discomfort without an apparent reason.
Why a Crack Is Dangerous If Left Untreated
Without timely intervention by a dentist, a crack will never heal on its own — under the influence of chewing pressure, it will only grow.
- Infection of the nerve. As soon as the crack deepens to the dentin and reaches the pulp (nerve), bacteria rush inside the tooth. Acute pulpitis develops, turning into periodontitis (inflammation of the tissues around the root).
- Tooth split. A crack can reach the subgingival part and split the tooth into two unconnected halves.
- Tooth loss. If the split line goes deep under the gum and affects the root of the tooth, it becomes impossible to save it. Such a tooth must be removed, followed by expensive implantation.
How a Dentist Detects Hidden Cracks
Since a conventional visual examination with a mirror is often insufficient, modern clinics use a comprehensive diagnostics of the oral cavity:
- Dental microscope — multiple magnification of targeted light allows the doctor to see the smallest enamel cracks at the earliest stage.
- Special dyes (markers) — a safe pigment is applied to the tooth, which penetrates into the microcracks and colors their lines, making the defect visible.
- Bite test — the patient is asked to bite down on a special plastic instrument with different cusps of the tooth to localize the pain.
- Transillumination — shining a powerful beam of light through the tooth — at the border of the crack, the light refracts, exposing the hidden split.
- CBCT (Cone-beam computed tomography) — a three-dimensional 3D image that helps assess the condition of the root and the bone tissue around it.
What Treatment Methods Help Save the Tooth
The treatment tactics depend entirely on how deep the process has gone. The main goal of the doctor is to “bind” the walls of the tooth together to prevent further divergence of the crack.
- Grinding and strengthening (for superficial microcracks). If only the enamel is damaged, the doctor can grind down the defect and perform deep fluoridation or remineralization.
- Artistic restoration (composite materials). The crack is prepared and filled with a durable light-cured material.
- Crown or veneers on teeth. If the crack is deep but the nerve is not affected, the tooth is ground down and covered with a crown (ceramic or zirconium dioxide). The doctor may recommend putting veneers on the teeth. Sometimes it is enough to install a single veneer.
- Endodontic treatment + crown. If the crack has reached the pulp, the nerve is first removed, the canals are filled, and then the tooth is definitely strengthened with a crown.
If the crack crosses the floor of the tooth cavity or goes deep along the root along its axis — the tooth, unfortunately, cannot be saved; it will have to be removed. But only a consultation with a dentist will help determine the degree of destruction.
A crack in a tooth is a ticking time bomb. It can show no symptoms for years, and then, at one point, lead to the complete loss of a tooth during a regular dinner. The best way to protect yourself from such a scenario is regular preventive visits to the dentist. It is especially important to visit a clinic if you have large old fillings or if you are prone to grinding your teeth. Attentive attitude to hidden symptoms and early diagnosis allow to manage with minimal treatment and not to choose dental prostheses for adentia afterwards.
