Compared to fillings which just cover a small portion of a tooth, a crown or cap encases the entire visible portion of a tooth. In effect, the crown acts as the tooth’s new outer surface.
It is used when a tooth is badly decayed or broken to such an extent that fillings aren’t able to repair the problem. The crown is able to provide a protective shell around the damaged or decayed tooth to strengthen it, as well as to improve the appearance of the tooth.
It can also help to restore a tooth to its original shape, commonly used for teeth that are broken. While crowns come in different materials, the most common crowns typically have some mixture of porcelain in them to give them a look and feel, similar to a natural tooth.
How it is done
The first visit involves Dr Ang reshaping the tooth and taking moulds to create the crown. A portion of the tooth will have to be removed for the crown to fit properly. The mould will be sent to a dental laboratory to be made into a permanent crown. Before sending you home, she will then provide you with a temporary crown to cover your tooth in between the visits. The fabrication typically takes 1 week.
When you return, the permanent crown from the dental laboratory is fitted after removal of the temporary crown and finally cemented in place. Comfortable bite and colour match are done before the final cementation stage.
Bridge is literally to bridge the gap created by 1 or more missing teeth. It is usually made up of 2 or more crowns on either sides of the gap.