CAJ | 학술논문

目的利用锥形束CT测量下颌切牙管(mandibular incisive canal,MIC),了解其形态和特点,为临床提供参考.方法观察2011年1月至2013年1月50名成人健康志愿者的锥形束CT图像,测量分析MIC的检出率、管径、长度及其与颌骨的关系.结果在50例(100侧)锥形束CT图像中:MIC的检出率为100％(100/100),清晰率为71％(71/100);MIC的管径面积(唇舌径×垂直径)从起点至终点逐渐变小(左侧起点2.17 mm× 2.22 mm,终点0.82 mm× 0.92 mm;右侧起点2.14 mm×2.08 mm,终点0.87 mm×0.86 mm);MIC左右侧平均长度分别为17.84和17.73 mm;MIC在下颌骨唇舌向偏唇侧;在垂直方向MIC距下颌骨下缘较近,MIC到根尖的距离在尖牙最小.结论锥形束CT对MIC有良好的检出率和清晰率;MIC在下颌骨的走行中偏向唇侧和下颌骨下缘.
목적 이용추형속CT측량하합절아관(mandibular incisive canal,MIC),료해기형태화특점,위림상제공삼고.방법 관찰2011년1월지2013년1월50명성인건강지원자적추형속CT도상,측량분석MIC적검출솔、관경、장도급기여합골적관계.결과 재50례(100측)추형속CT도상중:MIC적검출솔위100％(100/100),청석솔위71％(71/100);MIC적관경면적(진설경×수직경)종기점지종점축점변소(좌측기점2.17 mm× 2.22 mm,종점0.82 mm× 0.92 mm;우측기점2.14 mm×2.08 mm,종점0.87 mm×0.86 mm);MIC좌우측평균장도분별위17.84화17.73 mm;MIC재하합골진설향편진측;재수직방향MIC거하합골하연교근,MIC도근첨적거리재첨아최소.결론 추형속CT대MIC유량호적검출솔화청석솔;MIC재하합골적주행중편향진측화하합골하연.
Objective To investigate the mandibular incisive canal (MIC)with cone-beam computed tomography (CBCT).Methods Fifty adults were selected and CBCT was taken.The CBCT data were reconstructed to evaluate the visibility,shape,diameter,length of the MIC and its relationship with mandible.Results MIC could be identified in 100％(100/100) of CBCT with good clarity in 71％ (71/100).The diameters (horizontal diameter versus vertical diameter) of MIC became smaller from origin to end (left origin of MIC was 2.17 mm×2.22 mm,left end was 0.82 mm×0.92 mm;right origin of MIC was 2.14 mm× 2.08 mm,right end was 0.87 mm×0.86 mm).The left and right mean length of MIC was 17.84 mm and 17.73 mm respectively.In bucca-lingual direction,MIC was close to buccal cortical border,and in vertical direction,MIC was close to lower margin of mandible.The distance from MIC to apex of root was shortest in canine.Conclusions CBCT can identify MIC with high visibility and prominent clarity.In the interforaminal region of mandible,MIC was close to buccal and lower margin of mandible.