Bridges
This is a laboratory made restoration used to fill a gap in the mouth where there is a missing tooth. This procedure involves placing crowns on the teeth at either side of the gap and joining them together with a false tooth in the space. This whole structure is called a bridge and is cemented into place.
Another option is an adhesive bridge. These have wings that are bonded to the back of the supported teeth with very little drilling involved.
Animation Demo.
» More Information on bridges (doc)