A comparative study of the deviation of the menton on posteroanterior cephalograms and three-dimensional computed tomography
이희진, 이승은, 이은주, 송인자, 강병철, 이재서, 임회정, 윤숙자,
소속 상세정보
이희진 ( Lee Hee-Jin ) - Chonnam National University School of Dentistry Dental Science Research Institute
이승은 ( Lee Sung-Eun ) - Chonnam National University School of Dentistry Dental Science Research Institute
이은주 ( Lee Eun-Joo ) - Chonnam National University School of Dentistry Department of Oral Anatomy
송인자 ( Song In-Ja ) - Kwangju Women’s University Department of Nursing
강병철 ( Kang Byung-Cheol ) - Chonnam National University School of Dentistry Department of Oral and Maxillofacial Radiology
이재서 ( Lee Jae-Seo ) - Chonnam National University School of Dentistry Department of Oral and Maxillofacial Radiology
임회정 ( Lim Hoi-Jeong ) - Chonnam National University School of Dentistry Department of Orthodontics
윤숙자 ( Yoon Suk-Ja ) - Chonnam National University School of Dentistry Department of Oral and Maxillofacial Radiology
Abstract
Purpose: Facial asymmetry has been measured by the severity of deviation of the menton (Me) on posteroanterior (PA) cephalograms and three-dimensional (3D) computed tomography (CT). This study aimed to compare PA cephalograms and 3D CT regarding the severity of Me deviation and the direction of the Me.
Materials and Methods: PA cephalograms and 3D CT images of 35 patients who underwent orthognathic surgery (19 males and 16 females, with an average age of 22.1±3.3 years) were retrospectively reviewed in this study. By measuring the distance and direction of the Me from the midfacial reference line and the midsagittal plane in the cephalograms and 3D CT, respectively, the x-coordinates (x1 and x2) of the Me were obtained in each image. The difference between the x-coordinates was calculated and statistical analysis was performed to compare the severity of Me deviation and the direction of the Me in the two imaging modalities.
Results: A statistically significant difference in the severity of Me deviation was found between the two imaging modalities (Δx=2.45±2.03 mm, p<0.05) using the one-sample t-test. Statistically significant agreement was observed in the presence of deviation (k=0.64, p<0.05) and in the severity of Me deviation (k=0.27, p<0.05). A difference in the direction of the Me was detected in three patients (8.6%). The severity of the Me deviation was found to vary according to the imaging modality in 16 patients (45.7%).
Conclusion: The measurement of Me deviation may be different between PA cephalograms and 3D CT in some patients.
키워드
Facial Asymmetry; Anatomic Landmarks; Tomography; X-Ray Computed
원문 및 링크아웃 정보
등재저널 정보