A crown completely covers or "caps" a damaged tooth. This can help in strengthening a damaged tooth, as well as improve its appearance, shape or alignment. Crowns can also be placed on implants. Porcelain or ceramic crowns are matched to the colour of your own teeth. Other materials include gold and metal alloys, acrylic and ceramic. These alloys are generally stronger than porcelain and may be recommended for back teeth. Porcelain bonded to metal is often used because it is both strong and aesthetically pleasing. 

Your dentist may recommend a crown for the following reasons:

  • When there isn't enough of the tooth structure remaining to do a filling 

  • To strengthen a weak tooth to prevent it from fracturing 

  • To restore a fractured tooth 

  • To attach a bridge 

  • To cover a dental implant 

  • To cover a discoloured or poorly shaped tooth 

  • To cover a tooth that has had a root canal treatment


A bridge may be recommended if you are missing a few teeth. The bridge fills the space where the teeth are missing and is cemented to the natural teeth next to the empty space. These teeth serve as the anchors for the bridge. Your dentist will decide which material to use, based on which tooth is missing, as well as its function, aesthetic considerations and cost.

How long do crowns & bridges last

Crowns and bridges can last a lifetime, however, they do sometimes come loose and need re-cementing. To ensure the longevity of your crown or bridge, good oral hygiene and daily flossing is imperative.