| dc.description.abstract | Abstract:-Determining of age is essential in
forensic and medico legal practices. Most
dimorphic bone of the skull is mandible.
Therefore, in sex estimation, mandible plays a
dominant role. Since the measurements of the
mandible vary with the ethnicity, it is
important to evaluate the measurements of
the mandible which are important in
determining gender for a Sri Lankan
population. The aim of this study was to
determine the gender using measurements of
mandible taken from orthopantomogram and
cephalogram. This prospective cross sectional
study was conducted among 116 SriLankan
Sinhala patients (female 93, male 23) who
underwent both orthopantomography (OPG)
and lateral cephalometric examination at
National Dental Teaching Hospital, Colombo
07. Maximum and minimum ramus breadth,
condylar height, projective height, ramus
height, coronoid height, biogonial width were
taken from the OPG image and gonial angle
was taken from the lateral cephalometry using
left mandible of the patient. According to the
statistical analysis, mean values of maximum
ramus breadth, minimum ramus breadth,
condylar height, projective height, ramus
height, coronoid height, biogonial width of
males were higher than females. Mean value of
gonial angle of males were lower than females.
Projective height was the most significant
predictor in determining gender (P=0.000).
Among the sample, 67.2% predicted the
gender accurately using the prediction model
found in the present study. 67.7% were
predicted as females and 60.9% were
predicted as males accurately. In conclusion,
the most reliable measurement of the
mandible is projective height in determining
the gender of a Sinhala population in SriLanka. | en_US |
