RPI卡环可以减轻对基牙损伤,错误的原因是 ( )A.舌侧对抗臂与I型杆有较强的交互作用,对基牙扭力小 B.鞍基受载下沉后,邻面板随之下沉,不产...

作者: tihaiku 人气: - 评论: 0
问题 RPI卡环可以减轻对基牙损伤,错误的原因是 ( )
选项 A.舌侧对抗臂与I型杆有较强的交互作用,对基牙扭力小 B.鞍基受载下沉后,邻面板随之下沉,不产生对基牙的扭力 C.鞍基受载下沉后,I型杆离开基牙牙面,不产生对基牙的扭力 D.近中支托对基牙的扭力小 E.I型杆与基牙接触面积小,对基牙损伤小
答案 A
解析

相关内容:卡环,基牙,损伤,错误,原因,舌侧,对抗,作用,扭力,鞍基,受载,面板

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  • 位置: 第 85 行
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