Wang Y P
West China University of Medical Sciences, Chengdu.
Zhonghua Kou Qiang Yi Xue Za Zhi. 1991 Jan;26(1):21-3, 62.
Forty rabbits were used to study the rapid maxillary expansion. The widths of the dental arch and the base arch were measured. The histologic changes of the palatal medius suture tissue and periodontal tissue of the anchorage teeth after various degree of rapid maxillary expansion were observed. The result indicated that the width of dental arch and base arch were increased by expansion force. The increasing width of the dental arch almost were caused by the expansion of the medius suture chiefly. The stronger the force, the more the expansion of the palatal medius sutures, but this kind of force might cause the damage of the anchorage tooth periodontal tissue and delay the repairing and remodeling response of the tissue. The medius suture tissue has stronger endurance to the heavy expansion force.
选用40只兔子来研究上颌快速扩弓。测量牙弓和基骨弓的宽度。观察不同程度上颌快速扩弓后腭中缝组织及支抗牙牙周组织的组织学变化。结果表明，扩弓力可使牙弓和基骨弓宽度增加。牙弓宽度增加主要是腭中缝扩展所致。力量越强，腭中缝扩展越多，但这种力量可能会导致支抗牙牙周组织损伤，延迟组织的修复和改建反应。腭中缝组织对较大的扩弓力有较强的耐受性。
