Clinical review required: A broken tooth can involve enamel, dentine, pulp, root or supporting tissues. Treatment and urgency depend on fracture depth, symptoms, restorability, age, trauma history and whether the tooth was displaced.
What is a broken tooth?
A broken tooth has lost or separated tooth structure. The damage ranges from a small enamel corner to a deep crown-root fracture beneath the gum. Some breaks are obvious; others are hidden beneath an old filling or extend into the root. Appearance alone cannot show whether the pulp, root or periodontal ligament is injured.
Common causes
Falls, sport, collisions, biting hard objects and accidents can fracture healthy teeth. Large fillings, decay, root-canal treatment, grinding, acid erosion and age-related cracks can weaken structure. A tooth may also break because an unsupported cusp flexes around a restoration. Finding the cause helps prevent repeat failure.
Types of fracture
Clinicians distinguish enamel fracture, enamel-dentine fracture, crown fracture with pulp exposure, crown-root fracture and root fracture. A cusp fracture around a filling differs from a traumatic front-tooth injury. The classification guides emergency care, pulp protection, stabilisation and restoration.
Symptoms
A broken tooth may feel sharp, look shorter or trap food. Cold, sweet or air sensitivity suggests exposed dentine, while spontaneous or lingering pain can indicate pulpal inflammation. Pain on biting or release can accompany a crack. Swelling, a gum spot, bad taste or fever may signal infection. Absence of pain does not prove that the pulp is healthy.
When is it an emergency?
Seek prompt care for a new traumatic fracture, visible red or bleeding pulp, tooth displacement, uncontrolled pain or a sharp edge cutting tissue. Facial swelling, fever, difficulty breathing or swallowing, eye involvement and uncontrolled bleeding require urgent assessment. Trauma can also cause jaw, head or neck injury that needs medical care.
What to do immediately
Rinse gently with clean water, control bleeding with light pressure and use a cold pack over the face if swollen. Find the fragment and keep it moist in milk or saline; it may sometimes be reattached. Do not scrub it, use household glue or repeatedly test the tooth. Choose soft foods and avoid biting on the area.
How diagnosis is made
The dentist records how and when the break occurred, symptoms, previous restorations and medical risk. Examination includes magnification, illumination, bite and percussion tests, mobility, gum probing and pulp sensibility tests. Radiographs assess roots and surrounding tissues. Early pulp tests can be inconclusive after trauma, so follow-up is important.
Small enamel fractures
A minor rough edge may be smoothed or restored with composite. The aim is to preserve healthy enamel and natural contour. Polishing alone is unsuitable if the chip changes contact, appearance or exposes dentine. Photographs and bite assessment help determine whether the defect is stable or part of a larger crack.
Enamel-dentine fractures
Exposed dentine should be protected to reduce sensitivity and bacterial passage. Direct composite is frequently used; an intact fragment may be reattached in suitable cases. The choice depends on fragment fit, hydration, bite, remaining enamel and expected repairability. Continued pulp monitoring is needed after trauma.
Fracture with pulp exposure
A red or bleeding spot can mean the living pulp is exposed. In suitable permanent teeth, vital pulp treatment such as partial pulpotomy may preserve vitality, especially when treated promptly and the remaining pulp is healthy. Root-canal treatment is not automatically required. Age, root development, contamination, symptoms and restorability guide the decision.
Broken cusps and large fillings
A cusp can fracture while the central filling remains. Treatment ranges from direct bonded repair to an onlay or crown that covers vulnerable cusps. If the break extends deeply below the gum, crown lengthening, orthodontic extrusion or extraction may be discussed. Removing all remaining restoration before deciding can reveal hidden damage.
Crown-root fractures
These extend below the gum and may create a mobile fragment. Assessment determines how far the line travels, whether the root and pulp are involved and whether a sound margin can be created. Options can include fragment removal, pulp therapy, orthodontic or surgical exposure, restoration or extraction. Prognosis is case-specific.
Root fractures
A fracture within the root may follow trauma and can be accompanied by displacement or mobility. Some horizontal root fractures can heal when repositioned and flexibly splinted. Vertical root fractures often have a poorer prognosis because bacteria track along the fracture. CBCT may help selected uncertain cases but does not detect every crack.
Composite bonding
Composite can replace missing structure conservatively and is repairable. It is technique-sensitive and can stain, wear or chip. Layering and finishing should restore contour without creating a heavy bite contact. Large load-bearing defects may need cuspal coverage rather than repeated small repairs.
Onlays and crowns
An onlay covers weakened cusps while preserving more tooth than some full crowns. A crown surrounds the remaining clinical tooth and may protect extensively damaged structure. Neither treatment guarantees that a deep crack will stop. Preparation removes tissue, and the margin must remain cleanable and rest on sound structure.
Root-canal treatment
Root-canal treatment is indicated when the pulp is irreversibly inflamed, necrotic or infected—not simply because structure is missing. The tooth then needs an appropriate final seal and often cuspal protection. Root treatment cannot make an unrestorable fracture restorable or reunite a split root.
Extraction and replacement
Extraction may be appropriate when the tooth is split, the fracture is inaccessible, decay leaves insufficient sound tissue or combined periodontal and endodontic prognosis is hopeless. Replacement choices include implant, bridge, removable prosthesis, orthodontic closure or monitoring. Discuss them before extraction when timing affects socket or aesthetic planning.
Children and young permanent teeth
Preserving pulp vitality supports continued root development in immature permanent teeth. Trauma follow-up should monitor colour, symptoms, pulp response, root development and surrounding tissues. A negative early sensibility test does not alone prove pulp death. Growth also affects long-term restorative and implant choices.
Aftercare
Avoid loading the repaired tooth until cleared and follow any splint or soft-diet instruction. Brush gently and keep margins clean. Report increasing pain, swelling, movement, colour change or a lost restoration. Attend scheduled reviews because trauma complications can develop after initial comfort returns.
Preventing another fracture
Use a properly fitted sports mouthguard, avoid chewing ice and non-food objects, and treat active decay. Review large failing restorations and manage erosion or dry mouth. A night guard may protect restorations from some consequences of grinding but does not cure bruxism or guarantee that teeth will not fracture.
Treatment abroad
Request pre- and post-treatment radiographs, trauma classification, pulp findings, restoration material and a follow-up schedule. Clarify who manages pulp necrosis, debonding or fracture progression after travel. Same-day crowns can be appropriate, but speed should not replace diagnosis or review.
Questions to ask
- Which tissues are involved?
- Is the pulp exposed or likely to recover?
- Is there enough sound tooth for a durable restoration?
- Can the fragment be reattached?
- Would composite, onlay or crown preserve more structure?
- What follow-up tests are needed?
Frequently asked questions
Can a broken tooth heal itself?
Lost enamel and dentine do not regrow. Pulp and supporting tissues can sometimes heal after appropriate protection and monitoring.
Can I glue the fragment back?
No. Household adhesives are unsafe and interfere with professional bonding. Keep the fragment moist and bring it to a dentist.
Does every broken tooth need a crown?
No. Small and moderate defects may be restored directly, while deep or load-bearing damage may require cuspal coverage.
Why does it not hurt?
The fracture may be shallow, or the pulp may no longer respond. Examination is still necessary.
Sources and clinical review references
- IADT guidelines for fractures and luxations.
- Vital pulp treatment for traumatised permanent teeth.
- Pulpotomy for complicated crown fractures.
- Outcomes after uncomplicated and complicated crown fractures.
Editorial review note: Evidence reviewed 22 July 2026. Named clinician review is required before indexation.