Porcelain Onlays

When 50% or more of a tooth is already fililing, it is a good idea to cover the entire biting surface so that you minimize the risk of fracture. When possible, it is a good idea to do a porcelain onlay as opposed to a full crown. The outer surface of the porcelain onlay will replace the biting surface, and the underside will fit like a jigsaw piece onto your tooth. The benefit is that the edges of the porcelain onlay are typically above the gums which reduces the chance of gingivitis. With the edges of the porcelain onlay higher up on the tooth and more accessible, it is easier to brush and prevent new cavities. Also, since more of your tooth is preserved, the chance of affecting the nerve and needing a root canal is diminished.