【单选题】【消耗次数：1】
面部各部分之间比例协调时表现为（）
①
当下颌姿势位时，上颌切牙切缘在下唇下缘下约1mm，下颌前牙切缘与下唇上缘平齐
②
露出切牙1/2
③
口角对着上颌尖牙的远中部分或第一磨牙的近中部分
④
口角对着上颌尖牙的近中
⑤
以上都对
参考答案：
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相关题目
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病例一远中移动上颌磨牙的支抗设计作用是（）
①
防止磨牙远中移动的反作用力，导致上颌双尖牙舌倾
②
防止磨牙远中移动的反作用力，导致上颌前牙舌倾
③
防止磨牙远中移动的反作用力，导致上颌前牙唇倾
④
防止磨牙远中移动的反作用力，导致上颌双尖牙唇倾
⑤
防止磨牙远中移动的反作用力，导致上颌磨牙唇倾
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关于上颌牙齿牙体长轴近远中倾斜情况的描述中不正确的是
①
上颌侧切牙牙体长轴与中线相交角度大于中切牙（）
②
上颌尖牙牙体长轴与中线相交所成角度大于中切牙，小于侧切牙
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从双尖牙起近中倾斜程度逐渐减小
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第一磨牙几与中线平行
⑤
第二、三磨牙近中倾斜程度逐渐加大
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