Assessment of anterior-posterior jaw relationships in Korean adults using the nasion true vertical plane in cone-beam computed tomography images
박영주, 조영석, Mah James, 안장훈,
소속 상세정보
박영주 ( Park Young-Ju ) - Hallym University College of Medicine Kangnam Sacred Heart Hospital Department of Oral and Maxillofacial Surgery
조영석 ( Cho Young-Serk ) - Hallym University Kangnam Sacred Heart Hospital Department of Orthodontics
( Mah James ) - University of Nevada Las Vegas School of Dentistry Graduate School of Orthodontics
안장훈 ( Ahn Jang-Hoon ) - Hallym University Kangnam Sacred Heart Hospital Department of Orthodontics
KMID : 0361920160460030163
Abstract
Objective: The aims of this study were to investigate a simple method for assessing anterior-posterior jaw relationships via cone-beam computed tomography (CBCT) images taken in the natural head position (NHP) relative to the nasion true vertical plane (NTVP), and measure normative data in Korean adults with normal profiles.
Methods: Subjects were selected from patients presenting for third molar extraction and evaluated as having normal profiles by three examiners. The CBCT images of 80 subjects (39 males, 41 females) were taken in the NHP according to Solow and Tallgren’s method. Linear measurements of the A-point, B-point, and Pog were calculated relative to the NTVP. Student’s t-test was used to assess sexual differences in these measurements.
Results: The mean linear measurements of the A-point, B-point, and Pog relative to the NTVP were 0.18 mm (standard deviation [SD], 4.77 mm), ?4.00 mm (SD, 6.62 mm), and ?2.49 mm (SD, 7.14 mm) respectively in Korean males, and 1.48 mm (SD, 4.21 mm), ?4.07 mm (SD, 6.70 mm) and ?2.91 mm (SD, 7.25 mm) in Korean females respectively. There were no statistically significant differences between Korean males and females (p < 0.05).
Conclusions: Three-dimensional CBCT analysis using the NTVP is a simple and reliable method for assessing anterior-posterior skeletal relationships.
키워드
Natural head position; Nasion true vertical plane; Cone-beam computed tomography; Jaw relation
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