Anthropometric study on the human permanent mandibular canine tooth

ABSTRACT

A morphometric study on the human mandibular canine was carried out for establishing the sexual dimorphism in the various parameters of the mandibular canine tooth and for determination of the sex identify utilizing these mandibular canine parameters. The study included 320 adult individuals from Assiut medical students belonging to both sexes, their ages ranged between 19 and 23 years and had fully erupted healthy and non worn mandibular permanent canines. The mesiodistal mandibular crown width as well as the mandibular canine arch width was measured and the data collected was computerized and analyzed statistically. The results showed that the mean value of the mandibular mesiodistal crown width was 6.938 mm [ +/- 0.608] in male subjects and 5.952 mm [0.640] in females with sexual difference 0.986 mm and the percentage dimorphism was 6.56. The sexual dimorphism in the mandibular canine crown width was found to be significant. Also, the mandibular canine arch width exhibited such sexual dimorphism with a mean value 29.707 mm [ +/- 1.973] in males and 29.471 mm [ +/- 1.837] in females. The sex difference in the mandibular canine arch width was found to be significant. Higher correlations were found in both sexes between mandibular canine separation width and mandibular canine crown width. The mean value of the calculated mandibular canine index [MCI] was found to be 0.233% [ +/- 0.0179] in males and 0.2021 [ +/- 0.0117] in females and the sexual difference in the MCI was found to be significant. The standard MCI was calculated and was found to be 0.2148. Sex identity was determined using this standard MCI with an accuracy 86.88% in females