cavity
1 of 1noun/ˈkæ.və.ti/
Forms:cavities
1
a hole in a tooth that is caused by decay
A cavity is a hole that forms in a tooth because of tooth damage. It occurs when bacteria in the mouth produce acids that destroy the tooth enamel, which is the hard outer layer of the tooth. If left untreated, cavities can lead to pain, infection, and even tooth loss. Regular brushing, flossing, and dental check-ups are essential in preventing cavities.
- The dentist found a small cavity on her molar during the routine checkup.
- He felt sharp sensitivity when drinking cold water and worried it might be a cavity.
- Regular fluoride toothpaste and sealants can help prevent cavities in children's back teeth.
- The filling replaced the cavity and restored the tooth's function.
- Untreated cavities can deepen and eventually require root canal treatment or extraction.
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2
a natural empty space or hollow area inside the body
- Air passes through the nasal cavity when breathing.
- The heart sits inside a chest cavity.
- Sound echoes in the vocal cavity.
- The doctor examined the ear cavity.
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