Introduction:-Gender determination is one of the important parameters in the forensic science. The forensic odontologist is to identify the sex from whatever human dental remains are presented as a specimen. No two teeth have similar morphology and the purpose of this study was to investigate whether sexual dimorphism can be established by odontometric study of permanent maxillary canines’ teeth as well as canine arch width. Morphology of individual teeth is unique and is determined by genetic factor. Aim and objective:- • To identify role of maxillary canines in sex determination. • To find out maxillary canines index & sexual dimorphism methods for sex determination. • To review the findings in light of available literature. Material & methods:-The study was carried out on 100 objects 50 males and 50 females selected from NIMS medical college Jaipur (raj) belong to northern central region of India for role of maxillary canine in sex determination. The mesiodistal dimension of permanent maxillary canines was measured with the help of verniercalliper. Results:-The mesiodistal dimensions of the right and left maxillary canines were significantly different in male greater then female. Permanent maxillary canine exhibited larger mean values of mesiodistal dimension in males compared to females in northern central region of India Conclusion- The results of the present study showed that maxillary canines exhibiting significant sexual dimorphism and can be used for sex determination in individual as well as in group such as in mass disasters like earthquakes, floods.