CAJ | 학술논문

目的探讨提高Le Fort Ⅰ型截骨术的安全性和准确性的方法.方法对84例上颌正颌手术患者术前行锥型束CT(conebeam computed tomography,CBCT)扫描,提取不同的影像资料,测量定位上颌Le Fort Ⅰ型截骨区域重要解剖结构位置.结果 84例中,术前检查发现上颌窦严重发育不全3例,其各骨壁距离测量值远小于正常值;上颌第3磨牙高位阻生11例;上颌窦分隔8例,鼻中隔偏曲4例;上颌窦囊肿3例.该成像技术对正颌手术患者上颌骨翼腭管位置关系,上颌骨各骨壁的厚度,上颌窦分隔,上颌窦内潜伏病变,上颌高位阻生牙的定位,翼上颌联合情况,以及鼻中隔偏曲情况均有良好的显示,为上颌正颌手术方案设计提供了放射学的颌骨评估基础,可指导Le Fort Ⅰ型截骨的定位设计.结论 CBCT可为上颌Le Fort Ⅰ截骨提供更精准的结构解剖影像,从而提高手术的准确性与安全性.
목적 탐토제고Le Fort Ⅰ형절골술적안전성화준학성적방법.방법 대84례상합정합수술환자술전행추형속CT(conebeam computed tomography,CBCT)소묘,제취불동적영상자료,측량정위상합Le Fort Ⅰ형절골구역중요해부결구위치.결과 84례중,술전검사발현상합두엄중발육불전3례,기각골벽거리측량치원소우정상치;상합제3마아고위조생11례;상합두분격8례,비중격편곡4례;상합두낭종3례.해성상기술대정합수술환자상합골익악관위치관계,상합골각골벽적후도,상합두분격,상합두내잠복병변,상합고위조생아적정위,익상합연합정황,이급비중격편곡정황균유량호적현시,위상합정합수술방안설계제공료방사학적합골평고기출,가지도Le Fort Ⅰ형절골적정위설계.결론 CBCT가위상합Le Fort Ⅰ절골제공경정준적결구해부영상,종이제고수술적준학성여안전성.
Objective To improve the accuracy and safety of the Le Fort Ⅰ osteotomy. Methods Eighty-four patients underwent CBCT scan before maxillary orthognathic surgery. The anatomic structures of maxilla were marked and measured. Results In 84 cases, there were 3 cases with severe hypoplasia of maxillary sinus, 11 cases with impacted third molar, 8 cases with separation in maxillary sinus, 4 cases with the deviation of nasal septum, and 3 cases with cysts in maxillary sinus. Form CBCT images, the position of the pterygopalatine canal, the thickness of maxillary wall, hidden lesion of maxillary sinus, the location of Impacted molar, the deviation of nasal septum, and other anatomic structure could be accurately localized. CBCT could provide sufficient and valuable information in diagnosis and design for Le Fort Ⅰ osteotomy. Conclusions CBCT imaging technology could provide precise anatomic images for Le Fort Ⅰ osteotomy. It improves the accuracy and safety of the Le Fort Ⅰ osteotomy.