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本文研究了快速扩弓(rapid palatal expansion,RPE)后猫腭中缝的矿化模式。以10只1岁龄成年猫作为实验组,2只作为对照组。实验组的处理包括用固定式快速螺簧主动加力25天,每3～4天旋转加力一圈,保持60天,复发60天,然后定期拍摄标准化上颌X线咬合片以测量腭中缝宽度及中缝前部和后部的光密度,以及腭中缝的X线阻射区和透射区的面积变化。实验结果采用非参数检验进行统计分析。结果显示,实验组中共9只猫腭中缝被扩开。在主动加力阶段,X线透射区(即非矿化组织)的面积增加了12倍,并且前腭中缝的光密度比后部增大了50％,证明腭中缝前部形
This article studies the mineralization pattern of the cat's palate after rapid palatal expansion (RPE). Ten adult 1-year-old cats were used as the experimental group and two as the control group. The experimental group consisted of active force with a fixed quick coil spring for 25 days, rotating for 3 to 4 days every 3 circles for 60 days and relapse for 60 days. Then, the standardized maxillary X-ray films were taken regularly to measure the width of the mid-palatal slit And the optical density of the anterior and posterior portions of the mid-seams, as well as the area change of the X-ray and transmissive regions of the mid-palatal slit. Experimental results using non-parametric test for statistical analysis. The results showed that in the experimental group, a total of 9 cat palate suture was expanded. In the active energizing phase, the area of the X-ray transmission zone (ie, non-mineralized tissue) increased by 12 times, and the optical density of the anterior palatal incision increased by 50% compared with the posterior, demonstrating that the anterior palatal