正畸治疗前后数字化头影测量图像SN重叠方法的研究

Study on the method that digital projection of correctituding abnormality measure the image superposition

目的验证数字化头影测量图像SN重叠方法的可靠性。方法对10例正畸患者的数字化头影测量图像进行了前颅底解剖结构重叠法、SN线重叠法和Ba-N线重叠法中Gn点位移的比较;并对正畸治疗前后两次测量和采用重叠法直接测量的SNA角、1-SN角和中切牙点与SN线距离变化的比较。结果1)前颅底解剖结构重叠法和SN线重叠法测量的Gn点位移的差异无统计学意义;2)两次测量和采用重叠法直接测量测得的SNA角、1-SN角和中切牙点与SN线距离变化的差异亦无统计学意义。结论在数字化头影重叠的过程中,重叠后的图像未改变原有图像资料的真实性和有效性,重叠后的图像能真实反映正畸临床治疗的效果。

Objective To verify the digital projection of the reliability of image superposition. Methods To compare 10 cases＇ image superposition via the application of image-disposed software. Results There was no significance between SN superposition and digital projection method. Conclusion The superposed image reveals the statistical significance and the correctituding abnormality effectiveness.