Crowns
Crowns are made of precious metal alloy or porcelain or a combination of them both.
- Porcelain bonded crowns (Lava)
- Gold crowns
- Full ceramic crowns
We have all seen the unsightly black line that appears when the gum receeds away from crown margins. This darkness in the root next to the crown is due to light being reflected from the metal shell which forms the core of most modern crowns. It is this shell that provides the strength of the crown and porcelain is then bonded onto it to provide as aesthetic result as possible. The dullness often seen in crowns is due to the need to put an opaqueing layer to hide the metal core. Light hits this layer and does not reflect well leaving a life-less visual impression. An exception to this is the use of high quality gold metal cores where the yellow gold can mimic the natural colour of the dentine and provide warmth to the finished crown, especially when the adjacent teeth are darker.