Crowns and bridges dental treatment use prosthetic devices to get back your smile. These are not removable as they are cemented onto the teeth and can be removed only by a dental specialist. Apart from strengthening a damaged tooth, a crown is as well used to shape, align and improve the appearance of your teeth. Bridges on the other hand are recommended if you’re missing more than one tooth. They are used to replace a missing tooth or teeth as they cemented to the natural teeth or implants surrounding the empty space. The crowns and bridges last for a lifetime.