하치조신경 마취시 하악공으로의 접근을 위한 전산화단층촬영을 통한 방사선적 연구
The study by using the computerized tomography imaging in order to access to mandibular foramen while inferior alveolar nerve anesthesia
김지광, 구홍, 안진석, 국민석, 박홍주, 오희균, 조진형,
소속 상세정보
김지광 ( Kim Ji-Kwang ) - 전남대학교 치의학전문대학원 구강악안면외과학교실
구홍 ( Koo Hong ) - 전남대학교 치의학전문대학원 구강악안면외과학교실
안진석 ( An Jin-Suk ) - 전남대학교 치의학전문대학원 구강악안면외과학교실
국민석 ( Kook Min-Suk ) - 전남대학교 치의학전문대학원 구강악안면외과학교실
박홍주 ( Park Hong-Ju ) - 전남대학교 치의학전문대학원 구강악안면외과학교실
오희균 ( Oh Hee-Kyun ) - 전남대학교 치의학전문대학원 구강악안면외과학교실
조진형 ( Cho Jin-Hyoung ) - 전남대학교 치의학연구소
KMID : 0355620060320060566
Abstract
Purpose : This study was performed to provide an anatomical information of the mandibular ramus for the successful inferior alveolar nerve block. Three dimensional images were reconstructed from the computerized tomography (CT) and the anatomical evaluation of the mandibular ramus was done.
Materials and methods : Sixty-four patients who had been taken the facial CT scans from 2000, Jan to 2003, June was selected. The patients who had the anterior or posterior teeth misssing, edentulous ridge, and jaw fracture were excepted. In the occulusal plane, the lingual surface angle (LSA) between the mid-sagittal plane and the mandibular molar lingual surface from the 2nd premolar to the 2nd molar, the inner ramal surface angle (IRSA), the maximum inner ramal surface angle (MxIRSA), and the outer ramal surface angle (ORSA) to the-mid sagittal plane were measured. The inner ramal surface angle in the ligular tip level (IRSA-L) and the outer ramal surface angle in the ligular tip level (ORSA-L), the ramal length (RL), and the anterior ramal length (ARL) were also measured in the lingular tip level.
Results : In the lingular tip level, the mean IRSA-L and ORSA-L were 28.6±6.3.and 17.9±4.9.respectively. The larger was the IRSA, the larger was the ORSA. In the lingular tip level, the mean ramal length was 35.8±3.4 mm. The larger was the IRSA-L, the shorter was the ramal length. On the lingular tip level, the mean anterior ramal length from anterior ramus to lingular tip was 19.6±3.3 mm. when the ramal length was longer, the anterior ramal length was also longer. On the lingular tip level, there was positive correlation vetween the IRSA and the ORSA, negative correlation between the IRSA and the ramal length, and positive correlation between the ramal length and the lingular tip level to the anterior ramus. There was no statistical meaning of data between sex and age.
Conclusion : In the clinical view of the results so far achieved, if the direction of needle is closer to posterior it is able to contact bone on lingular tip when the internal surface of ramus is wided outer.
키워드
Computerized tomography (CT);ORSA;IRSA;LSA;RL;ARL
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