Another alternative for replacing a missing tooth or teeth is a dental bridge. A bridge can be used to fill the space or gap. Gaps between teeth can cause the other teeth in the mouth to "drift," or come out of alignment, and can even cause problems with your bite. A bridge is a permanent, prosthetic tooth that is attached to adjoining teeth. This realistic-looking appliance fills the gap left by the missing tooth, stops your other teeth from drifting, and maintains the health and beauty of your smile.