In the past, dentists could only treat cavities and tooth decays with silver and mercury fillings. Modern restorative dentistry has replaced these unsightly fillings with tooth-colored composite fillings made of porcelain or resin. These fillings are sealed to the surface of the tooth, creating a strong bond that prevents future decay.
However if the cavity of the prepared tooth is wide or big, porcelain inlays and onlays (also known as indirect fillings) are designed to fill these cavities and areas of damage in the teeth. However, while traditional fillings fit inside a cavity, inlays and onlays are placed on top of the tooth to build it up and add strength. While regular fillings are made of a soft material that is fitted inside of the tooth, inlays and onlays are molded in our laboratory from porcelain and cemented in place.