Three-dimensional soft tissue analysis for the evaluation of facial asymmetry in normal occlusion individuals
황현식, Yuan Dong-Hui, Jeong Kweon-Heui, 엄기수, 조진형, 윤숙자,
소속 상세정보
황현식 ( Hwang Hyeon-Shik ) - Chonnam National University School of Dentistry Dental Science Research Institute Department of Orthodontics
( Yuan Dong-Hui ) - Chonnam National University School of Dentistry Department of Orthodontics
( Jeong Kweon-Heui ) - Chonnam National University School of Dentistry
엄기수 ( Uhm Gi-Soo ) - Chonnam National University School of Dentistry
조진형 ( Cho Jin-Hyoung ) - Chonnam National University School of Dentistry Department of Orthodontics
윤숙자 ( Yoon Sook-Ja ) - Chonnam National University School of Dentistry Department of Oral and Maxillofacial Radiology
KMID : 0361920120420020056
Abstract
Objective: To identify the right and left difference of the facial soft tissue landmarks three-dimensionally from the subjects of normal occlusion individuals.
Materials and Methods: Cone-beam computed tomography (CT) scans were obtained in 48 normal occlusion adults (24 men, 24 women), and reconstructed into 3-dimensional (3D) models by using a 3D image soft ware. 3D position of 27 soft tissue landmarks, 9 midline and 9 pairs of bilateral landmarks, were identifi ed in 3D coordination system, and their right and left differences were calculated and analyzed.
Results: The right and left difference values derived from the study ranged from 0.6 to 4.6 mm indicating a high variability according to the landmarks. In general, the values showed a tendency to increase according to the lower and lateral positioning of the landmarks in the face. Overall diff erences were determined not only by transverse differences but also by sagittal and vertical differences, indicating that 3D evaluation would be essential in the facial soft tissue analysis.
Conclusions: Means and standard deviations of the right and left difference of facial soft tissue landmarks derived from this study can be used as the diagnostic standard values for the evaluation of facial asymmetry.
키워드
Th ree-dimensional;Soft tissue;Facial asymmetry;Cone-beam CT
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