정상교합과 골격성 III급 부정교합 환자의 하악소설의 위치와 하악관의 주행 및 협측 피질골의 두께에 관한 연구
The study on the location of the mandibular lingula, the anatomical course of the mandibular canal, and the thickness of the buccal cortical bone in normal occlusion and skeletal Class III malocclusion patients
성기웅, 김재범, 이상윤, 이영규, 김종식, 변수환, 이정우, 이진용, 방강미, 김성민, 김명진, 이종호,
소속 상세정보
성기웅 ( Sung Ki-Woong ) - 서울대학교 치의학대학원 구강악안면외과학교실
김재범 ( Kim Jae-Bum ) - 서울대학교 치의학대학원 구강악안면외과학교실
이상윤 ( Lee Sang-Yoon ) - 서울대학교 치의학대학원 구강악안면외과학교실
이영규 ( Lee Young-Kyu ) - 서울대학교 치의학대학원 구강악안면외과학교실
김종식 ( Kim Jong-Sik ) - 서울대학교 치의학대학원 구강악안면외과학교실
변수환 ( Byun Soo-Hwan ) - 서울대학교 치의학대학원 구강악안면외과학교실
이정우 ( Lee Jung-Woo ) - 경희대학교 치과병원 구강악안면외과
이진용 ( Lee Jin-Yong ) - 서울대학교 치의학대학원 구강악안면외과학교실
방강미 ( Bang Kang-Mi ) - 서울대학교 치의학대학원 구강악안면외과학교실
김성민 ( Kim Soung-Min ) - 서울대학교 치의학대학원 구강악안면외과학교실
김명진 ( Kim Myung-Jin ) - 서울대학교 치의학대학원 구강악안면외과학교실
이종호 ( Lee Jong-Ho ) - 서울대학교 치의학대학원 구강악안면외과학교실
KMID : 1025720130320020025
Abstract
Purpose: This study was performed to analyze and compare the location of the mandibular lingula, the anatomical position of the mandibular canal, and the thickness of the buccal cortical bone in normal occlusion and skeletal Class III malocclusion patients.
Materials and Methods: Sixty patients who visited Seoul National University Dental Hospital and took Computed Tomography (CT) image from March, 2008 to September, 2011, were selected and divided into Angle classification I and III. Using the three dimensional imaging software(Simplantⓡ version 14.0, Materialise, Leuven, Belgium), the location of the mandibular lingula, the anatomical position of the mandibular canal, and the buccal cortical bone thickness were analysed. Measurements were statistically analyzed by Independent samples T-test.
Results: In the comparison between two group, there were statistically significant differences in the height of the mandibular lingula from the occlusal plane (7.80±2.49 mm in Class I patient group and 10.03±3.31 mm in Class III patients group), and the ratio of the antero-posterior length of ramus of mandible to the length between the mandibular canal and the anterior point of the plane that was paralleled with the occlusal plane and contained the #46 CEJ in the ramus of mandible between Class I and Class III patient group. Other values in the rest of the measuring points did not show statistically significant difference.
Conclusions: In our study, Classs III patients had higher mandibular lingula than Class I patients. Therefore, incision and osteotomy lines have to be considered under theses anatomical findings during mandibular surgery.
키워드
Mandibular canal; Skeletal Class III malocclusion; Mandibular lingula; Inferior alveolar nerve; Buccal cortex bone
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