Porcelain Inlays/Onlays

Inlays and onlays are alternative restorations to more traditional bonded composite resin fillings. They are fabricated in a laboratory outside the mouth. This not only ensures a custom fit but also aids in stress reduction within the tooth.

The materials which they are made of are various dental ceramics, which are well known for their combination of strength and natural-looking tooth aesthetics.

The strength properties of the materials used to make the restoration means that weakened teeth can be protected. For this reason inlays and onlays are often used to restore large defects and protect heavily restored teeth, or those under very heavy load.  

What is the difference between an inlay and onlay?
A inlay only replaces tooth structure within the centre of the tooth, whereas an onlay will also cover some aspect of the cusps/inclines of the tooth. Therefore an onlay is a larger coverage restoration. 
Unlike a crown, inlays and onlays only cover a portion of the tooth. This means that more natural tooth structure is maintained, ensuring a conservative approach with minimal tooth preparation required. 

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