It's very important to make a space maintainer if the second deciduous molar is lost too soon.

假如第二颗乳牙过早脱落，那摸装上间隙保持器是件要紧的事。

youdao

Objective:To observe the clinical application and effect of the transparent pressure- swage space maintainer.

目的：探讨透明压模式缺隙保持器的临床应用及效果。

youdao

Objective:To observe the clinical application and effect of the transparent pressure- swage space maintainer.

目的：探讨透明压模式缺隙保持器的临床应用及效果。

youdao