When you lose a tooth or teeth, it impacts your remaining teeth, which tend to “drift” out of position. This leads to crooked teeth, a change in your bite, possible gum disease and tooth decay, and the potential loss of more teeth. Fixed bridges are non-removable restorations made of one or more replacement teeth. They are anchored by one or more crowns on each side or are cemented to remaining teeth. Bridges can include up to four replacement teeth (with natural teeth on both sides of the gap to act as anchors) and look very natural.