A crown is also placed on top of an implant to provide replacement tooth for normal oral function. Porcelain or ceramic crowns can be matched to the color of your natural teeth. Other materials include gold and metal alloys. These alloys are generally stronger than porcelain and may be recommended for back teeth. Porcelain fused to metal is often used because it is both a strong material and attractive in its appearance.
A bridge is placed in a space where a single tooth or teeth are missing and is attached onto a neighbouring tooth / teeth or implants. These teeth, called abutments, serve as anchors for the bridge. A replacement tooth, called a pontic, is attached to the crowns that cover the abutment. As with crowns, you have a choice of materials for a bridge. Your dentist can help you decide which is best for you, based on the location of the missing tooth (or teeth), its function, aesthetic considerations and cost.