结果快速扩弓方法能有效地打开腭中缝。
Results The mid-palatal suture could be opened effectively with rapid maxillary expansion.
测量每个实验步骤结束时腭中缝的宽度。
The breadth of the rat palatal suture after each experiment phases was measured.
目的：本研究比较了两脚和四脚腭快速扩张器在打开腭中缝和牙齿扩张的效果。
Objective:The purpose of this study was to determine the difference, if any, between midpalatal suture separation and dental expansion produced between 2-points or the 4-points group.
方法测量11例骨性下颌前突伴偏斜患者治疗前模型，将上颌腭中缝作为中线标准，测量牙弓两侧同名牙接触点到腭中缝的距离，观测牙弓的对称性。
Methods Measurement of 11 dental models was performed, midline of palate was defined as central line, the distance of every contact point to the midline was measured in each side.
方法测量11例骨性下颌前突伴偏斜患者治疗前模型，将上颌腭中缝作为中线标准，测量牙弓两侧同名牙接触点到腭中缝的距离，观测牙弓的对称性。
Methods Measurement of 11 dental models was performed, midline of palate was defined as central line, the distance of every contact point to the midline was measured in each side.
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