How long do crowns last?

Doctor's Answers 1

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Dr Steven Soo

Prosthodontist

Crowns should last approximately 10 years if maintained well and not abused (i.e. biting very hard things). Therefore, it is important to take good care of them so that they can last as long as possible. Refer to this question for tips on how to care for your dental crowns and bridges.

Like everything, they will be subject to some wear and tear and will require replacement eventually. Here are some cases when it will be necessary to replace the dental crowns with new ones:

  • Cracked or broken crown
  • Excessive wear resulting in holes (perforation) found on the crown
  • Recurrent tooth decay underneath the crown
  • Gum recession resulting in the edge of the crown being visible (eg. dark line)

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A tooth may become discoloured for reasons other than a dead/infected nerve. After a traumatic injury, the nerve (which is still alive) may lay down scar tissue internally, causing the tooth to become more yellow over time. Other causes of discolouration include external staining from: Dietary sources Tobacco stains Fluorosis Abnormal enamel development/maturation Deposition of tetracycline antibiotics within the tooth Before the nerve dies completely, the internal bleeding from the nerve tissue stains the tooth a dark grey or brown colour.

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Answered By

Dr Jaclyn Toh

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Is there such a thing as a dental implant specialist in Singapore?

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