A bridge is used to save the space of a missing tooth while maintaining the integrity of your smile. If the tooth is not replaced then a series of complications can occur. First, your teeth can begin to shift as each tooth supports each other. Another problem is your bite can change creating discomfort in chewing, jaw pain and headaches. As well, when the tooth has nothing to bite against, the tooth will extrude leading to problems for it and the surrounding teeth. Bridges use the adjacent natural teeth for support. A bridge is designed by your dentist but is fabricated in a dental lab and usually requires a minimal of 2 appointments to complete. Nowadays, many people are opting for dental implants to avoid the prepping of adjacent teeth as is required for bridges.