Dental Crowns and Onlays
If you have a heavily damaged or decayed tooth, our dentists can help you choose the best solution. Crowns and onlays (sometimes called ‘caps’) are custom-fitted tooth prosthetics that function and look like natural, healthy teeth. They are usually fitted on teeth that are at risk of fracture (such as following a root canal) or too severely damaged or decayed to restore with a simple filling. These thin porcelain or resin shells are colour-matched to adjacent teeth and are usually bonded in place. For front teeth, veneers can sometimes be a less invasive alternative, but may only be a solution for those with slight tooth damage or discolouration.
Types of Dental Crowns
A dental crown is a tooth-shaped "cap" that is placed over a tooth to restore its shape and size, strength, and improve its appearance. When only very minimal tooth tissue remains, a post sometimes needs to be placed within the tooth to help retain the crown. They can be made from a variety of materials depending on the properties required. At Fourways we offer 4 different types of crown:
e.max - a very strong full porcelain material with superior aesthetics & very thin, thus less damage to underlying tooth
Porcelain-fused-to-metal - an average strength porcelain with decent aesthetics and a metal substructure to give added support
Zirconia - an extremely strong porcelain with superior resilience but poorer aesthetics
Gold - very strong in thin section thus minimally invasive for the underlying tooth
Dental onlays are an extremely conservative alternative to crowns for heavily damaged or decayed teeth. With modern porcelains & bonding materials, they are extremely aesthetic & just as long lasting as traditional crowns.
Superior Fit: They offer a conservative preparation that preserves as much healthy tooth as possible.
Tooth Colour: made from highly aesthetic e.max porcelain, they blend in well with existing & adjacent tooth structures
Tooth Structure Safeguard: They preserve the maximum amount of healthy tooth structure while restoring decayed or damaged areas, helping to ensure functional longevity.
Easier Tooth Cleaning: Because the fit is tailored at all edges and the preparation minimal, your tooth can be easier to clean than it would be with full coverage restorative alternatives such as a dental crown.
Strength and Stability: They are extremely stable restorative solutions for the treatment of decay. The superior fit and durable material make them a stable choice that can actually strengthen a damaged tooth.
Weak Tooth Protector: An onlay can protect the weak areas of the tooth. The procedure does not require the complete reshaping of the tooth.
The problematic tooth is trimmed and shaped for a proper crown/onlay fit
An impression is taken of your bite for crown/onlay fabrication by our lab technicians
The porcelain colour & shade is selected
A temporary crown/onlay is fitted until the lab makes the permanent one
Return after 2 weeks for final permanent crown/onlay fitting