经过多年的实践证实龈下刮治是一种有效的牙周非手术治疗方法，早期的龈下刮治主要是用手工刮治器。

After years of practice, it was confirmed that subgingival scaling was an effective non-surgical periodontal therapy. In early, subgingival sealing was practiced with manual sealing.

youdao

经过多年的实践证实龈下刮治是一种有效的牙周非手术治疗方法，早期的龈下刮治主要是用手工刮治器。

After years of practice, it was confirmed that subgingival scaling was an effective non-surgical periodontal therapy. In early, subgingival sealing was practiced with manual sealing.

youdao