Porcelain or ceramic crowns are the most sought after, due to the fact that the color can be matched to the natural color of your tooth. Otherwise, gold/metal alloys and acrylic crowns are available.
Dental Bridges and Crowns are used to cover one or more missing teeth in order to prevent surrounding teeth from moving or rotating, which can impact your bite negatively, resulting in joints pain. Bridges are fixed to your natural teeth or implants and like crowns, come in materials such as porcelain and ceramic.
Traditionally, the dentists reduce the size of the teeth needing a Dental Crown or Dental Bridge and take an impression, which is sent to a dental lab. Meanwhile, a temporary crown or bridge is used until the permanent crowns are ready.