We must use double abutments when the bone of premolar is re- duced. But molar can be selected as abutment even if its bone level was absorbed seriously.
磨牙可以适当放宽基牙选择的适应症，对于牙槽骨吸收至根分歧甚至更低的磨牙在保证牙周卫生、控制炎症的基础上仍可考虑作为固定桥的基牙。
We must use double abutments when the bone of premolar is re- duced. But molar can be selected as abutment even if its bone level was absorbed seriously.
磨牙可以适当放宽基牙选择的适应症，对于牙槽骨吸收至根分歧甚至更低的磨牙在保证牙周卫生、控制炎症的基础上仍可考虑作为固定桥的基牙。
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