A.0~3歲B.7~9歲C.12~15歲D.18~20歲
A.GBRB.上頜竇提升術(shù)C.Onlay植骨D.牽張成骨術(shù)
A.牙槽骨快速吸收B.牙周炎進(jìn)展加劇C.牙發(fā)育不全D.頜骨發(fā)育不良