Orthodontic procedure. Animation showing a procedure to treat teeth that have become misaligned due to the loss of a tooth. First a fixed brace is used to bring the teeth back into their proper positions, then the missing tooth is replaced with a bridge. In a bridge the artificial tooth is fitted to two crowns that cover the teeth either side of the gap.HD master is flattened onto a black background, as seen in this preview. The original file has a transparent alpha channel and is available as the HD master of clip K003 3767.