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Old discoloured
and broken fillings

If it impacts on your comfort, well-being, and enjoyment of life, it could just be time to do something about it.
And a lot can be done.

Read on To Discover…

and much more…

Old worn out fillings can impart significant discoloration to a tooth. This becomes even more evident if there is bacteria leaking around the filling. Corrosion by-products of a silver filling placed near the front of the mouth can leave the tooth bluish or even black in colour. The simple replacement of this material with a new modern tooth coloured material can restore a tooth to its original beauty.

Smile Makeovers

Watch how we blend art and science to design ideal smiles.
This process can be used to address a wide range of aesthetic issues including old discoloured and broken fillings.

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Have you been thinking about investing in cosmetic dental treatment?
Submit your request for a complimentary e-consultation here.
Describe your issues, upload one or more photos and we will outline some treatment options that will help you achieve the smile you’re after.

Why replace old fillings?

Dark old fillings impart an displeasing dark colour to the tooth structure surrounding them, and for many people, this is a good enough reason to replace them. However, there are other reasons to consider replacing them.

Bacteria removal.

As a white filling becomes ‘unglued’ from the tooth surface, bacteria can leak in around it. At the start of this process, you will see a brown line around the filling. In time these stain producing bacteria will surround the filling to further discolour the tooth. Eventually, they will destroy tooth structure as decay.

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Fracture removal.

Old amalgam fillings that have been in place for longer than ten years should often be looked at for replacement. This is because the statistics suggest the likelihood of fractures being involved with the remaining tooth structure that surrounds the fillings after this time is quite high. To make matters worse, it’s very difficult to diagnose such fractures as they will rarely show up on x-rays, and they only cause symptoms when they are about to completely break through – very often too late for the tooth.

What do we replace old fillings with?

The material that we restore a tooth with is dependant on the amount of tooth structure that remains after all old filling material, decay and fractures are removed. The rigidity of the remaining structure and whether it can support itself, or if it needs further protection is what we try to assess.
There are three basic options:

Composite resin

If 60% or more of your tooth structure remains, composite resin is generally a very durable and long lasting restoration option. It has been shown that when there is more than 40% of your tooth structure lost, 90% of its strength is lost.


If only 40% or less of the tooth structure remains, there will not be enough structure to support an inlay / onlay, and a crown is a better option. The crown is produced in a very similar fashion to the inlay / onlay but it more completely encapsulates the remaining structure. Therefore it provides a greater splinting effect.

Porcelain Inlays and Onlays

If only 40% to 60% of your tooth structure remains, they would be better protected with Porcelain inlays or onlays. These are much stronger that Composite resin restorations. They are produced in a laboratory and take two visits to complete. At the first visit, an impression is taken of the prepared tooth which is sent to lab. A temporary inlay / onlay is placed to protect your tooth until the next visit. At the second visit, the temporary restoration is readily removed, and the new porcelain restoration is bonded into place.


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