A cracked tooth may cause pain when chewing or releasing a bite, and sensitivity to hot or cold. Fine enamel lines and deeper cracks have different implications. A mirror or photograph cannot reliably show how far a crack extends.
A visible line is not the same as a functionally important crack
Some shallow enamel lines affect appearance only; a deeper crack may cause biting or temperature pain. A photograph cannot establish its depth. Even when pain comes and goes, explain what triggers it and whether releasing the bite changes it. Do not test the tooth with hard objects.
Examination, bite tests and imaging where appropriate help investigate the problem. Treatment depends on location and extent: a filling, crown, root canal treatment or extraction of an unmaintainable tooth may be considered. Not every crack needs root canal treatment, and a crown does not guarantee success in every case. Avoid loading the tooth until assessed; swelling or increasing, spontaneous pain needs earlier attention.
Why Do Tooth Cracks Occur?
Eating hard foods
Teeth grinding or clenching
Trauma or impact
Large fillings
Protect the tooth while arranging an examination
Avoid biting hard objects or foods with the affected tooth, and do not repeatedly test it by biting. Do not glue or file the tooth yourself.
Tell the dentist what triggers the pain and whether there was an injury. Assessment considers the crack's location, the bite and the tooth's vitality, with imaging when needed. Treatment depends on the crack's position and extent; not every crack needs root canal treatment or extraction.
If the pain stops, has the crack healed?
No. Reduced pain does not mean cracked tooth tissue has joined together. Have a suspected crack examined; increasing swelling or severe pain should not be left waiting.
