Assessments of inclinations of the mandibular fossa by computed tomography in an Asian population |
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Authors: | Cheng-Kuan?Wu Jui-Ting?Hsu Yen-Wen?Shen Jin-Hua?Chen Wu-Chung?Shen Email author" target="_blank">Lih-Jyh?FuhEmail author |
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Institution: | (1) School of Dentistry, College of Medicine, China Medical University, 91 Hsueh-Shih Road, Taichung, 40402, Taiwan;(2) Department of Dentistry, China Medical University and Hospital, Taichung, Taiwan;(3) Graduate Institute of Biostatistics and Biostatistics Center, China Medical University, Taichung, 404, Taiwan;(4) Department of Radiology, China Medical University Hospital, Taichung, Taiwan; |
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Abstract: | This study aims to evaluate the inclinations of right and left sides the mandibular fossa in Asian population using computed
tomography (CT) images and determine its effects according to the parameters of gender, age, and asymmetry. CT images of the
heads of 198 Asian subjects 95 females aged 44.2 ± 20.7 years, range 11–88 years; and 103 males aged 44.5 ± 19.7 years, range
15–98 years] were selected. The following eight parameters characterizing the inclinations of the mandibular fossa were measured
by medical imaging software: anterior and posterior inclinations on the left and right sides on a sagittal view, and medial
and lateral inclinations on the left and right sides on a coronal view. The anterior inclination was significant steeper in
males than in females on both the left and right sides. A moderate positive correlation was found between age and anterior
inclinations on the left and right sides. None of the other parameters were significantly affected by age or gender. None
of the parameters differed significantly between the right and left sides of the mandibular fossa in males, females, or all
subjects. The anterior inclination of the mandibular fossa was affected by aging and gender becoming steeper in Asians males
than females. Besides, there were no asymmetry in the right and left side inclinations of the mandibular fossa. |
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