Two paralel horizontal lines crossing the crowns of the lower teeth (specify material)(Colombia)
Horizontal line below all extracted teeth
Mark the missing teeth with a "X". Place a horizontal line between the outline of the teeth and the numerals designating teeth replaced by the CD.
Ex: Man CD (acrylic, gold, or chrome-cobalt)
(The U.S. Navy, 1999)
Rp (Removable prosthesis) - Libya
T (denture tooth/ primary code must be X to indicate missing tooth) - WinID3 system