David got braces for his lower teeth.
大卫帮下面的牙齿装了牙套。
Make sure that your tongue touches the back of the lower teeth.
一定要使你的舌头接触下齿的背面。
Make sure that your tongue touches the back of the lower teeth.
下颔的下降赖臼齿与舌骨肌、颏舌骨肌和颈阔肌。
Use index fingers to guide floss between contacts of the lower teeth.
使用食指之间的指导下排牙齿接触的牙线。
The lower jaw is broad enough for the lower teeth to be straight and even.
下颌宽阔，足够排列所有的下部牙齿。
Please move the brush downwards on the upper teeth and upwards on the lower teeth.
刷上颌时牙刷当背上挪动，刷下颌时牙刷当背下移静。
Upper teeth - to meet tightly outside lower teeth in form or scissor bite accepted.
上牙-将下牙紧密包住，接受剪状咬合。
The second method is to move upper and lower teeth by archwire lingually and bucally.
二是利用上下颌的正畸弓丝移动上下牙齿向颊、舌方向；
I'll place your new teeth in the wax form to be sure that they fit with your lower teeth.
我会给您试戴蜡的假牙，看看是不是与您的下牙适合。
He took his lower lip between his teeth for a moment, and then let it go.
他的牙齿咬住了了嘴唇，过了一会儿才松开。
Having the lower jaw or teeth projecting beyond the upper; underhung.
下门牙或下颌突出的下颌或牙突出超过上颌或牙的；
Having the lower jaw or teeth projecting beyond the upper; underhung.
下门牙或下颌突出的下颌或牙突出超过上颌或牙的；
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