覆<img src="/Image1/01/01d49297e72826a3fa953b302f66ca78.jpg" />的定义是（）<br>A:牙尖交错<img src="/Image1/01/01d49297e72826a3fa953b302f66ca78.jpg" />时，上下前牙发生重叠关系<br>B:牙尖交错<img src="/Image1/01/01d49297e72826a3fa953b302f66ca78.jpg" />时，上颌牙盖过下颌牙唇颊面间的水平距离<br>C:牙尖交错时<img src="/Image1/01/01d49297e72826a3fa953b302f66ca78.jpg" />，上颌牙盖过下颌牙唇颊面间的垂直距离<br>D:牙尖交错<img src="/Image1/01/01d49297e72826a3fa953b302f66ca78.jpg" />时，上颌牙盖过下颌牙舌面间的水平距离<br>E:前伸运动时，下前牙切缘超过上前牙切缘的水平距离