论文部分内容阅读
Objective Platelet-rich plasma(PRP)is a rich source of autologous growth factors.PRP was first applicated in the treatment of periodontal intra-bony defects in 2000 with combination of DFDBA.Now there are many clinical studies focusing on this field.However,the long-term treatment outcomes of PRP are still not clear.The aim of this study is to evaluate long-term outcomes of PRP combined with bovine porous bone mineral(BPBM)in the treatment of periodontal intra-bony defects.