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http://dx.doi.org/10.5933/JKAPD.2021.48.1.64

Assessment of the Position of the Mandibular Foramen and Mandibular Lingula in Children and Adolescents using CBCT  

Lee, Jihye (Department of Pediatric Dentistry, School of Dentistry, Chonnam National University)
Choi, Namki (Department of Pediatric Dentistry, School of Dentistry, Chonnam National University)
Kim, Byunggee (Department of Pediatric Dentistry, School of Dentistry, Chonnam National University)
Kim, Seonmi (Department of Pediatric Dentistry, School of Dentistry, Chonnam National University)
Publication Information
Journal of the korean academy of Pediatric Dentistry / v.48, no.1, 2021 , pp. 64-76 More about this Journal
Abstract
The purpose of this study is to evaluate the position of the mandibular foramen and location and morphological characteristics of the mandibular lingula using Cone-Beam Computed Tomography (CBCT). Mandibular CBCT images of children aged 6 - 16 years were collected. A total of 180 patients were divided into 3 groups, 6 - 7, 10 - 11 and 15 - 16 years, with 30 male and female patients per group. Either side of the ramus was analyzed. The shortest distances from the anterior, posterior, superior and inferior border of the ramus to the mandibular lingula were measured. The shortest distance between the mandibular lingula and the mandibular foramen was also measured. The vertical distance from the mandibular lingula and the mandibular foramen to the occlusal plane was measured. The shapes of the mandibular lingula was classified into 4 types according to the criteria. The distances of the mandibular lingula from the anteroposterior and vertical reference points of the ramus increased in all directions with age. The distance between the mandibular lingula and the mandibular foramen also increased with age. The location of the mandibular lingula and the mandibular foramen in relation to the occlusal plane moved upwards with age. The most common shape of the mandibular lingula was triangular, followed by nodular, truncated and assimilated, and there was no difference in the shape according to age. It is recommended that the horizontal insertion point of the anesthesia from the anterior border of the ramus increased to 17 mm, 18 mm, and 19 mm according to the age groups. It is also suggested that the vertical insertion point increased by 2 - 3 mm, 5 - 6 mm and 9 - 10 mm above the occlusal plane according to the age groups.
Keywords
Mandibular foramen; Madibular lingula; Cone-beam computed tomography;
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