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目的 :探讨 32只猴活体上颌犬齿口内摄片的最佳投照方法。方法 :32只猴均采用 X线中心线与矢状面夹角呈 6 0°～ 75°投照条件不变的情况下 ,X线中心线分别再向足侧倾斜 5 0°方法行 4只猴 8次照片 ;向足侧倾斜 70°方法 6只猴 12次照片及向足侧倾斜 85°方法 2 2只猴 44次照片。结果 :采用 5 0°方法 ,获取一类片 0 % ,二类片 2 5 % ,三类片 75 % ;采用 70°方法 ,获取一类片 0 % ,二类片 83% ,三类片 17% ;采用 85°方法 ,获取一类片 82 % ,二类片 18%。 5 0°投照方法获取的影像结果最差 ,85°投照方法获取的影像效果最好 ,三种方法统计学相差显著 (P<0 .0 0 1)。结论 :拍摄猴犬齿片时应根据其解剖特点 ,加大投照角度到 85°,可得到满意的效果。
Objective: To explore the optimal method of in vivo imaging of maxillary canines in 32 monkeys. Methods: 32 monkeys were used X-ray center line and the sagittal angle was 6 0 ° ~ 75 ° shooting conditions unchanged case, the X-ray centerline and then to the foot tilt 5 0 ° approach 4 8 photos of the monkey; 70 ° tilting to the foot Methods 12 photos of 6 monkeys and a tilt of 85 ° to the foot Side 2 2 monkeys 44 photos. Results: 50% of the first category, 25% of the second category and 75% of the third category were obtained by using the method of 50 °. The first category was 0%, the second category was 83% and the third category was 17 %; Using 85 ° method, access to a class of 82%, second class 18%. The images obtained by the 5 0 ° projection method had the worst results, and the images obtained by the 85 ° projection method had the best results. There was a significant difference between the three methods (P <0. 001). Conclusion: The filming of canine fangs should be based on its anatomical characteristics, increase the vote angle to 85 °, can be satisfied with the results.