This paper presents a match of X-ray teeth films using image processing based on special features of teeth.This method will help the dental doctors to match simply a pair of teeth using the special features of the teeth films.Teeth’s pictures are scanned and adjusted by a scanner and a computer, respectively, as well as then they are convertedinto binary code and decoded to the direction code (chain code). The chain code of each picture is compared with thestatistical chain code. Therefore, the percentage of the same chain code is approximately 90% (i.e. matching samepatterns) for the comparison of one root to one root (7 times) and two roots to two roots (7 times) while the percentageof the same chain code is reduced at relatively below 50% (i.e. matching different patterns) for comparison of one rootto two roots (2 times).