The crown is the part of a tooth covered by enamel. Anatomists separate the anatomical crown, which runs down to the cementoenamel junction, from the clinical crown, the part actually visible above the gum. Crown shape differs by tooth type, from the cutting edge of an incisor to the cusps and fissures of a molar.
| Location | Part of each tooth above the cementoenamel junction, normally projecting into the oral cavity |
|---|---|
| Parts |
|
Provides the biting and chewing surface of the tooth and meets the opposing teeth in the bite.
Pits and fissures on crowns trap plaque and are where most childhood decay starts, which is why sealants are placed on them. Crowns fracture in trauma or when weakened by large fillings, and badly damaged teeth are often restored with an artificial crown. As gums recede with age, the clinical crown lengthens and exposes the root.
Incomplete fracture of a crown, often in a heavily filled molar, causing sharp pain on biting and on release.
Decay beginning in the grooves of the chewing surfaces, especially of molars, where plaque is hard to clean.
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