For each patient, teeth of one side were experimental group, and the other side was the control group.

治疗过程由一名口腔内科医生承担。 尽可能选每名患者一侧牙齿作实验组，另一侧作对照组。

youdao

For each patient, teeth of one side were experimental group, and the other side was the control group.

治疗过程由一名口腔内科医生承担。 尽可能选每名患者一侧牙齿作实验组，另一侧作对照组。

youdao