What are onlays and inlays?
Porcelain inlays and onlays are porcelain fillings that unlike the old unsightly metal fillings, they cannot be seen when you smile or laugh. Only we and you will know that they’re there. They’re pearly white like the teeth they fill, so if you are looking to get rid of those old ugly amalgam fillings, this may be your chance.
How do inlays differ from onlays?
An inlay is smaller than an onlay. As its name suggests, it lies within the tooth cusps (the small bumps on the top tooth surface). Inlays fill smaller cavities.An onlay extends over the top of one or more cusps, filling a larger cavity that involves a side tooth surface as well as the top.
Tooth enamel and dental porcelain are both translucent and react with light in similar ways. A translucent substance allows light to travel through it. The light that enters tooth enamel is reflected back off the tooth layer below, the dentin, which is yellow. Light entering porcelain is reflected back off the dental cement used to attach it to the tooth. In both cases, the result is the pearly-white shine we associate with healthy and beautiful teeth.