Crowns are custom-made and are cemented into place, providing you with a functional and natural "tooth-like" cover over your own tooth. Crowns can be made of metal or ceramic fused to metal, or even completely ceramic (tooth coloured porcelain). The strength and durability available with modern materials, have reduced need for metal substructures previously necessary to strengthen crowns. These all ceramic materials allow us to achieve exceptional aesthetic results and avoids the "metal margins" seen after the gum recedes over time.
The tooth is prepared. A crown is made and fitted to the tooth.
Dental crowns differ from veneers in that they cover all surfaces of the tooth, where veneers cover a part of it.
Crowns are used to:
What are the processes involved in having a crown?
A thorough assessment, including a dental x-ray, will determine the suitability for a crown. You shall have an opportunity to discuss the procedure and ask any questions.
The tooth is numbed using local anaesthetic, and then it is prepared and shaped to make appropriate space for the crown. An impression of this is sent to the ceramist, along with your dentist’s instructions for constructing your crown. At this time, a provisional crown will be placed by your dentist to protect your tooth, provide function and give aesthetic appeal whist the ceramist is hand-crafting your permanent crown.
This visit can be expected to last just over an hour. We will work with you to ensure appointments are as convenient as possible with your schedule.
What Types of crowns are used for restorative treatments?
There are a number of materials available with different properties. Your dentist will discuss which is the most suitable option for you.
Porcelain Bonded to Metal
This crown material combination allows for a duality of purpose that supports with both beauty and strength. By bonding tooth coloured porcelain to a metal sub-structure, the crown has acceptable durability and appearance. It is preferable to use a precious metal for its biocompatibility with your gums. This biocompatibility reduces the chances of inflammation. Additionally, corrosion is less likely with precious metals. Occasionally, if the gum around a crown recedes, a black line may appear (the metal in the crown being exposed) and create a less attractive appearance to your smile.
This crown material offers a very natural aesthetic appearance attained through its unique processing, achieving a translucency and opalescence that begs comparisons to nature. It can chemically bond with your tooth enamel, is strong and achieves a much more natural look. It is particularly useful for front teeth.
This historic crown material has been used in restorative treatments for decades and is especially effective on back teeth, due to its durability and the fact that gold’s wear characteristics are similar to natural tooth enamel. Able to be formed using material less than 1mm thick, gold preserves more of your tooth’s structure as it needs minimal tooth preparation, so it’s rather conservative.
A metal crown, covered in porcelain, is considered by many as traditional. But in certain light, this can make the tooth look dull and lifeless. An alternative is for the crown to be made of solid porcelain. This will give a more natural look to the tooth.
BDS (Hons.) MJDF RCS (Eng), MClinDent (FRP Lond) FICOI, MSc (Dental Implantology)
BDS (Lond) MJDF RCS (Eng)