New approach for vertical bone regeneration using <i>in situ</i> gelling and sustained BMP‐2 releasing poly(phosphazene) hydrogel system on peri‐implant site with critical defect in a canine modelBo‐Bae Seo, Soo‐Chang Song, Hyuck Choi et al.|Journal of Biomedical Materials Research Part B Applied Biomaterials|2017Cited by 21