Normal range of facial asymmetry in spherical coordinates: a CBCT study
윤숙자, Wang Rui-Feng, 나희자, Palomo Juan Martin,
소속 상세정보
윤숙자 ( Yoon Suk-Ja ) - Chonnam National University School of Dentistry Department of Oral and Maxillofacial Radiology
( Wang Rui-Feng ) - University of Michigan School of Dentistry Department of Biologic and Material Sciences
나희자 ( Na Hee-Ja ) - Honam University Department of Dental Hygiene
( Palomo Juan Martin ) - Case Western Reserve University School of Dental Medicine Department of Orthodontics
KMID : 1024020130430010031
Abstract
Purpose: This study aimed to measure the bilateral differences of facial lines in spherical coordinates from faces within a normal range of asymmetry utilizing cone-beam computed tomography (CBCT). Materials and Methods: CBCT scans from 22 females with normal symmetric-looking faces (mean age 24 years and 8 months) were selected for the study. The average menton deviation was 1.01±0.66 mm. The spherical coordinates, length, and midsagittal and coronal inclination angles of the ramal and mandibular lines were calculated from CBCT. The bilateral differences in the facial lines were determined. Results: All of the study subjects had minimal bilateral differences of facial lines. The normal range of facial asymmetry of the ramal and mandibular lines was obtained in spherical coordinates. Conclusion: The normal range of facial asymmetry in the spherical coordinate system in this study should be useful as a reference for diagnosing facial asymmetry.
키워드
Cone-Beam Computed Tomography; Imaging; Three-Dimensional; Facial Asymmetry
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