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Background: The determination of age and sex is crucial for establishing human identity. Themandible is an accessible and durable bone that is very useful in this respect.Aim: To assess the efficacy of measuring the mandible ramus length in the identification of ageand sex in a group of Egyptians.Subjects and Methods: The length of the ramus of the mandible was measured in lateralcraniofacial scans of 213 individuals (99 males and 114 females) with an age range of 7-58 yearsusing cone-beam computerized tomography (CBCT).Results: Sexual dimorphism was not observed until age of 17 years in this sample. There wasnot found any significant differences in the length of the ramus of the mandible between malesand females in the age range of 7 to less than 17 years (P-value = 0.2495). There was a significantdifference between males and females for the mean length of the ramus in the age range of 17 to 58years (P-value < 0.0000). It predicts sex with an accuracy of 67%. There was a positive correlationbetween and (age) and loge (ramus length) (r=0.73, P-value < 0.0001 for females and r=0.85,P-value his or her mandible ramus length.Conclusion: The mandibular ramus length is valuable in age estimation and less valuable insex determination. Computerized tomography examination is a safe and an accurate procedurewith minimal radiation exposure, and provides valuable precise information regarding mandiblemeasurements.

Mandibular Ramus linear measurements as an Indicator of Chronological Age and Sex in Egyptian Population