We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Comparison of mandibular arch forms of Korean and Vietnamese patients by using facial axis points on three-dimensional models.
- Authors
Kil-jun Lee; Vu Thi Thu Trang; Bayome, Mohamed; Jae Hyun Park; Yong Kim; Yoon-Ah Kook
- Abstract
Objective: This study was aimed at comparing the mandibular arch forms of Korean and Vietnamese patients by using facial axis (FA) points on three- dimensional (3D) models. Methods: Mandibular casts of 68 Korean (Class 1 malocclusion, 30; Class 11 malocclusion, 38) and 78 Vietnamese (Class 1 malocclusion, 41; Class 11 malocclusion, 37) patients were scanned in their occluded positions and grouped according to arch form (tapered, ovoid, and square). The FA point of each tooth was digitized on the 3D mandibular models. The measurements and frequency distributions of the arch forms were compared between the ethnic groups. Results: The Vietnamese patients had significantly greater intercanine depth and intercanine and intermolar width-to-depth ratios than the Korean patients (p < 0.05). The frequency distributions of the arch forms were also significantly different (p = 0.038), but no sexual dimorphism was found. Conclusions: Vietnamese people tend to have deeper and wider arches than Korean people. The three arch forms are evenly distributed in Korean people, but Vietnamese people frequently have square arches. Clinicians should identify the correct arch form of an ethnic group before initiating orthodontic treatment.
- Subjects
MANDIBULAR condyle; KOREANS; VIETNAMESE people; FACIAL abnormality patients; THREE-dimensional imaging; MEDICAL imaging systems; ORTHODONTICS; COMPARATIVE studies; SEXUAL dimorphism; DISEASES
- Publication
Korean Journal of Orthodontics, 2013, Vol 43, Issue 6, p288
- ISSN
2234-7518
- Publication type
Article
- DOI
10.4041/kjod.2013.43.6.288