我國(guó)錯(cuò)畸形的遺傳因素約占錯(cuò)畸形病因的()
A.40.00% B.29.40% C.25.00% D.91.20% E.48.87%
墊厚度將上下前牙離開多少最為適宜()
A.3.0mm B.5.0mm C.0.5~1.0mm D.0.3~0.5mm E.1.5~2.0mm