A bridge replaces one or more missing teeth and is usually hung on natural teeth at each end (anchor or support teeth) with a crown.
If a bridge only hangs on an anchor and has a free floating joint, one speaks of an extension bridge.
Normally the intermediary touches a bridge gum. But sometimes you make a bridge at the back of the mouth, where the middle part is only a connecting rod of metal free of the gums, which is called a gliding bridge. A third form of bridge replacement is a so-called support bridge, which is made for patients with loose teeth due to paradox.