Composite White Fillings
Kelowna Dental Centre restores teeth using a plastic tooth coloured filling — also called a “composite” or “white” filling — is a relatively new class of dental-restoration material. In its early forms, it was prone to breaking. But the material has been greatly improved in recent years. Made of acrylic resin and fine glass particles, it can be custom mixed to very closely match your natural tooth colour.
Dentists today use composite materials over the old standard – silver coloured materials (“amalgam”). The mixture of several metals (that may include silver, copper, and tin and almost always includes mercury) have a distinct disadvantage; the material expands and contracts to temperature at a rate twice that of tooth enamel and dentin and considerably more than composite fillings. Imagine a bottle of beer or pop left in the freezer and you get the picture. What this means over time is fractured, broken teeth.
Other advantages of composite fillings include:
- Patients want their restored teeth to look natural
- Composite is strong enough to fill small to midsize cavities
- Won’t corrode or darken over time
- Can adhesively bond to the tooth, adding strength
- Requires less removal of healthy tooth structure during the drilling phase, in most cases
- Conducts less heat and cold initially, reducing potential sensitivity
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