Cracked tooth: diagnosis and treatment
The clinic treats many cases of cracked teeth, with the main aim of keeping the natural tooth and avoiding invasive treatment when possible. Finding a crack early and treating it properly are key to preventing further damage. Each case starts with a thorough assessment of the tooth and a treatment plan adapted to the patient.
Under the direction of Dr Haim Aseriel, the team pays close attention to diagnosis. Hairline cracks are hard to see in a routine exam, so diagnosis relies, as needed, on specific bite tests, dye, magnification and X-rays. Accurate diagnosis matters because untreated cracks can lead to pulp inflammation, infection or even loss of the tooth. A cracked tooth does not heal like a broken bone, and the crack can spread over time.
What is a crack in a tooth, and what does it look like?
A cracked tooth is a fracture or split that forms in the outer enamel, sometimes reaches the dentin and, in severe cases, the pulp. Cracks can result from excessive chewing pressure (especially on hard foods), trauma to the mouth, sudden temperature changes in the mouth, clenching and grinding (bruxism), and extensive dental work that has weakened the tooth.
What a cracked tooth looks like
A crack can range from a fine, almost invisible line to a deep, visible split. Often it cannot be seen in a simple visual exam. Patients usually come in because of sudden pain when chewing, tooth sensitivity to hot or cold, discomfort with certain foods, or pain that is hard to pin down. A special dye can help highlight the crack and assess its extent.
A change in tooth color
A crack may cause the tooth to change color, especially when it lets bacteria into the inner structure, which can show as dark or gray lines on the tooth.
What to do until your visit
- Avoid chewing on the side of the cracked tooth.
- Avoid hard foods, such as ice or hard kernels.
- Contact the clinic promptly if you have pain or swelling; urgent cases are seen the same day, during opening hours.
Five types of cracks in teeth
Dentists distinguish several types of cracks, each with its own features and treatment. Understanding the differences helps choose a precise treatment that aims to keep the tooth in the long term. The American Association of Endodontists (AAE) describes five main types:
1. Craze lines
Superficial cracks in the outer enamel only. They are very common in adults and usually cause no pain or functional problem. They are mainly a cosmetic issue and generally need no treatment unless they affect the appearance of the tooth or get worse.
2. Fractured cusp
Part of the chewing surface (a cusp) breaks off, usually around an existing filling. It is common in teeth with large fillings. It rarely affects the pulp, so pain is usually mild. Treatment is usually a new filling or a crown.
3. Cracked tooth
A crack running from the chewing surface down toward the root, without splitting the tooth in two. It can cause pain when chewing or with temperature changes and may spread gradually. If it has reached the pulp, treatment includes a root canal and a crown to protect the tooth; a crack that has spread below the gumline usually requires extraction.
4. Split tooth
An advanced vertical crack in which the tooth has separated into two parts. In most cases the whole tooth cannot be saved, and partial or complete extraction is needed.
5. Vertical root fracture
These cracks start in the root and progress upward. They are hard to diagnose and often found only when infection develops around the root. Treatment is often extraction, though the tooth can sometimes be kept with endodontic surgery to remove the fractured part of the root.
Cracked tooth pain and cracked tooth syndrome
When a crack goes past the enamel into the dentin, it exposes the dentinal tubules, tiny channels connected to the pulp and its nerve fibers. Hot, cold, sweet or acidic stimuli can then reach the sensitive nerves directly and cause sharp pain.
When you chew, the tooth flexes slightly and the crack opens and closes, putting mechanical pressure on the pulp. This typical pattern, sharp pain on biting or on releasing the bite that is hard to locate, is often called cracked tooth syndrome. In advanced cases, bacteria can enter through the crack and cause inflammation or infection.
This explains why crack pain often comes and goes, sometimes sharp and sometimes barely noticeable.
A cracked front tooth vs a cracked molar
A crack can appear in any tooth, but cracks in front teeth differ from those in molars in depth, cause, diagnosis and treatment, as the table below sums up.
In the clinic's video (in Hebrew), Dr Aseriel presents the two options for a broken front tooth: composite bonding or a porcelain veneer.
Cracked molars typically cause sharp pain when chewing that disappears as soon as the pressure is released, sensitivity to cold or heat, and sometimes to sweets. If not treated in time, they can progress to pulp inflammation.
| Criterion | Cracked front tooth | Cracked molar |
|---|---|---|
| Depth | More superficial, often cosmetic | Deeper, real functional problems |
| Usual cause | Trauma, such as a blow or a fall | Strong chewing forces, large fillings, bruxism |
| Diagnosis | Easier to see | Harder to detect |
| Treatment | Composite (tooth-colored resin) | Crown, sometimes a root canal first |
Cracked tooth treatment: options by depth
Treatment depends on the depth of the crack, where it is in the tooth and the symptoms.
Superficial cracks
For cracks limited to the outer enamel, polishing or a composite restoration keeps most of the natural tooth while restoring appearance and function. For cosmetic cracks in front teeth, porcelain veneers are an aesthetic, durable option.
A crack into the dentin
When the crack goes deeper into the dentin, or there are symptoms such as temperature sensitivity or pain when chewing, more extensive treatment is considered. An onlay or inlay may then be the preferred option: it supports the damaged tooth and keeps the crack from progressing. An onlay covers the chewing surface and reduces the load on it.
A crack that reaches the pulp
When the crack has reached the pulp or caused an infection, a root canal becomes necessary, followed by a full crown to protect the tooth.
How is a cracked tooth repaired?
Repair starts with an accurate picture of the crack, through a careful clinical exam and X-rays. The plan is then based on the position of the crack, its depth and its effect on the health and function of the tooth. Superficial cracks can often be treated with a conservative composite restoration, matched to the natural shade of the tooth.
For more significant cracks, especially in back teeth that carry heavy chewing loads, a dental crown is usually the preferred solution. The tooth is gently shaped to receive the crown; the clinic makes metal-free zirconia crowns and E-MAX crowns, designed from a digital scan of the prepared tooth (Shining 3D Aoralscan 3 intraoral scanner, no impression paste) and made in the clinic's lab, often the same day, to fit your bite precisely.
When the crack has reached the pulp, a root canal is done first, under local anesthesia, to remove the damaged tissue and prevent infection. The tooth is then reinforced and protected with a crown. After treatment you receive advice on brushing, diet and follow-up visits: even a restored tooth can crack again if it is exposed to abnormal forces.
Examination, treatment plan and price quote
detailed and personalized
During the consultation, Dr Haim Aseriel examines your teeth, explains all the options and gives you a transparent price quote, with no obligation. The clinic is at 12 HaTnufa Street, Jerusalem.
Does a cracked tooth have to be extracted?
Extracting a cracked tooth is not necessarily the first or only option: the decision depends on where the crack is, how deep it goes and how it affects the structure of the tooth.
The clinic's approach is conservative. Many cracks, especially superficial or horizontal ones limited to the crown, can be treated with composite restorations, onlays or full crowns, without extraction.
Sometimes, however, extraction becomes necessary. Deep vertical cracks that extend below the gumline and into the root are a major challenge: these areas cannot be treated and can become a focus of infection. Cracks that split the tooth into two separate parts also usually require extraction, as the pieces cannot be reliably joined. The decision is made only after examining all options with you. If the tooth must be removed, replacement options include dental implants, fixed bridges or partial dentures.
How to prevent cracks in teeth
Good daily oral hygiene and regular dental visits are the basis of crack prevention. Brush twice a day with fluoride toothpaste and clean between your teeth daily. Check-ups catch cracks early, when treatment is simpler; how often you need them depends on your oral health and personal risk, every six months for many people and more or less often for others, as your dentist advises.
01
Avoid harmful habits
Chewing ice, eating very hard foods or opening packages with your teeth increases the risk of cracks. Avoid going straight from very hot to very cold drinks, as sudden temperature changes make tooth structure expand and contract. A small crack found early can be treated with broken tooth repair before it spreads.
02
Wear a night guard
A night guard protects the teeth of people who grind them, but does not cure the grinding itself. Grinding at night puts significant pressure on the teeth and increases the risk of cracks and fractures. A custom night guard protects against wear and spreads the forces.
03
Watch acidic foods
Cutting down on acidic foods and drinks helps, as they can weaken enamel and increase sensitivity. Rinse with water after acidic food and wait a while before brushing so as not to damage softened enamel.
A cracked tooth needs prompt attention
When a crack is suspected, see a dentist soon to assess the tooth and propose suitable treatment, from conservative fillings to crowns and, when needed, a root canal. At the clinic, at 12 HaTnufa Street in Talpiot, south Jerusalem, the options, their advantages and drawbacks are explained in English, and you receive a detailed written quote after the consultation. For sudden severe pain, see emergency dentist; opening hours: Sun 8:00–19:00 · Mon 9:00–19:00 · Tue–Wed 9:00–21:00 · Thu 8:30–21:00 · Fri 8:00–14:00.
Cracked tooth: frequently asked questions
A cracked tooth is a fracture or split that starts in the outer enamel layer, sometimes reaches the dentin underneath and, in severe cases, extends to the pulp of the tooth.
When a crack goes past the enamel into the dentin, it exposes the dentinal tubules, tiny channels connected to the pulp and its nerve fibers. Hot, cold, sweet or acidic stimuli can then reach the sensitive nerves and cause sharp pain. When you chew, the crack opens and closes slightly, which also puts pressure on the pulp.
No. A cracked tooth does not heal on its own the way a broken bone does. According to the American Association of Endodontists (AAE), a crack can spread over time, so early diagnosis and treatment improve the chance of keeping the tooth.
Cracked tooth repair depends on the depth and position of the crack. Superficial cracks can often be treated with a conservative tooth-colored composite restoration. Deeper cracks, especially in back teeth that carry heavy chewing loads, are usually treated with a crown, and if the crack has reached the pulp a root canal is needed first.
Not necessarily. The decision depends on where the crack is, how deep it goes and how it affects the structure of the tooth. Many cracks limited to the crown can be treated with a composite restoration, an onlay or a crown. A crack that has spread below the gumline, or that has split the tooth in two, usually requires extraction.
Sources
- American Association of Endodontists, Cracked Teeth – View the page
- Fee PA et al., Cochrane Database of Systematic Reviews, 2020 – View the study
