Age and sex determination are crucial in the biological identification of the remaining skeleton, especially in forensic circumstances. This study's main important focus is to gauge the dimension such as distance, width, size, and structure of the cranial bone. It still becomes most laborious when the body has been reduced to a skeleton. Between men and women: In men, the height or width of the nasal bone is higher than in women. The cranial capacity is higher in females as compared to males. The main task of this examination was sex estimation through the geometric morphometric analysis of the frontal bone. Occurred distinction in structure and magnitude through the glabellar region. The parameters of different components are used to determine sex, i.e., nasal aperture, etc.; Multi-Detector Computed Tomography (MDCT) helps in sex determination. MDCT plays a vital role in identifying age, sex, and determination using scans of various cranial bone parts. Computed tomography provides good image acquisition, greater spatial resolution, and excellent accuracy. This study's focus on forensics is to estimate the measurements such as length, width, etc. Glabella separated the female and male skulls with reasonable accuracy. For sex determination, mastoid size, nasal height measurements, and various anthropometric methods are used. Some studies indicate a distinguished purpose that also helps to determine the sex from the remaining skeleton. The main motive of this study is to present sex using a piriform aperture from a fragmented skull. The mean value of nasal height, nasal width, and nasal index is higher in men than women. The growth nasal septum is monitored in paediatrics for one year because the paediatrics gradually develop nasal septum during one year. In forensic circumstances, there is only one anatomical structure to determine sex and ages better. The lower region of the face is more different than the upper section of the face. In the Gastrointestinal intestinal period, nose length rises from 3.3 mm to roughly 16 weeks. At different ages, nose parameter is identified using MRI and magnetic resonance imaging; nasal structure and size are constant or growing after 35-year man and women. After a period of 45-year, thickness in the soft tissue of craniofacial.