图 2. Collagen组拔牙牙槽嵴保存术治疗过程.

Fig 2 Process of tooth extraction and alveolar ridge preservation in Collagen group

A：术前；B：微创拔牙后彻底清创；C：填入异种移植物骨替代物平齐牙槽嵴顶；D：覆盖Bio-Oss^® Collagen；E：交叉褥式及间断缝合创口。