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Abstract

The present study investigates the distance between the mandibular inferior alveolar canal and the apex of the first and second permanent molars and the mandibular buccal cortex in CBCT images. This study was conducted on 100 radiographs. After recording demographic information, all parameters of the inferior alveolar canal were recorded in CBCT. Independent t-tests and Mann-Whitney tests were used to compare the studied variables. Investigating the age and gender of the subjects revealed that the distance from the root apex of tooth 6 to the buccal cortex of the mandible trunk was significantly higher in males than in females (5.44 vs. 4.2 mm) (especially in those under 40 years of age). The distance from the root apex of tooth 7 to the buccal cortex of the mandible trunk was significantly higher in males than in females (6.61 vs. 5.3 mm). Additionally, in all the subjects studied, only the distance from the canal to the mesial root apex of tooth 6 had an inverse and significant relationship with age (r= -0.2 and P=0.046). The mandibular inferior alveolar canal may be an appropriate criterion for determining the age and gender of individuals and can be used to identify age and gender in forensic medicine and other cases. However, further and more detailed investigation in this area is needed to achieve the diagnostic accuracy of various parameters. A more detailed investigation in future studies is needed in this regard.

Keywords: CBCT, Mandibular inferior alveolar canal, First and second molar apex, Mandibular buccal cortex