正常颧骨体的螺旋CT三维测量及其临床意义  

3D spiral CT measurement of zygomatic body in normal adult and its clinical significance

作　　者：赵亮亮[1] 洪流[1] 侯振亚[2] 

机构地区：[1]北京大学口腔医学院修复科,硕士生北京100081 [2]北京大学第一医院医学影像科,副主任医师副教授北京100034

出　　处：《口腔颌面修复学杂志》2005年第2期145-147,共3页Chinese Journal of Prosthodontics

摘　　要：目的:为临床上颌骨大型缺损后颧颊翼种植体义颌修复的种植床提供影像解剖学资料。方法:通过对50例正常单侧颧骨体(男性26例,女性24例)螺旋CT三维重建影像的观察和测量,测量颧骨体的高度和四个不同高度层面骨质前后径和内外径即粗度。结果:颧骨体最小高度是21.67mm、最大为37.31mm、平均高度为26.22mm。颧骨体1/4高度层面的前后径最小,平均为9.15mm;最高层面的内外径最小,平均为10.73mm;3/4高层面的前后径和内外径最大,均值分别为12.32mm和15.25mm。所有观察对象前后径和内外径的最小测量值分别为6.15mm和6.54mm。结论:在上颌骨大型缺损腔周围,颧骨体是唯一骨量丰厚的种植床,而上颌骨缺损腔周围其他骨质均非常薄,远远不能满足普通种植的条件。颧骨体的高度大于粗度,呈长柱形,在口内颧区垂直向上植入种植体比在缺损腔内近于水平向植入种植体更能利用其丰厚骨量,最适宜于颧区种植。一般颧区种植采用直径4mm、长度20mm的种植体是可行的,也是安全可靠的。Objective: To provide the image anatomic data of implant site of zy go-buccal flange ossointegrated implant obturator for patients with large defect of maxillary. Methods: 50 cases of (male 26,female 24) normal unilateral zygoma tic body were measured with 3D spiral CT image, measuring the height of zygomati c boby; catching the anterior-posterior and medio-lateral dimensions of bone at different sections which were also called the circumference of zygomatic boby. R esults: The minimal height of the zygomatic body was 21.67mm; the maximal 37.31m m with average of 26.22mm. The least average anterior-posterior dimension was at 1/4 height section with an average value of 9.15mm. And the minimal medio-later al dimension was at upmost section with an average value of 10.73mm. The average anterior-posterior and medio-lateral dimensions of 3/4 height section were 12.3 2mm and 15.25mm, which were the largest values. The least anterior-posterior dim ension of all observed objections showed a value of 6.15mm. And the least medio- lateral dimension was 6.54mm. Conclusions: Zygomatic body is the only implant s ite around the maxillary defect cavity with abundant bone volume. No other areas reach the requirement of common implant. The value of zygomatic body height is much bigger than that of circumference. And it is the most suitable site for zyg omatic-area implant. Implant in zygomatic area perpendicularly to occlusal plane can make more use of zygomatic bone-volume than implant nearly horizontally in defect cavity. The diameter of implant in zygomatic area can be 4mm; the length can reach 20mm or longer.

关 键 词：颧骨体 颧区 骨内种植体 螺旋CT 三维测量 冠状位 

分 类 号：R816.98[医药卫生—放射医学]