▎ 摘　　要

NOVELTY - Use of graphene oxide in improving the density of 3D printing ceramic paste. USE - The graphene oxide is useful in improving the density of 3D printing ceramic paste. ADVANTAGE - The ceramic slurry has excellent mechanical property and osteogenic vascular biological activity, high material printing precision, and stable quality. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) 3-D printing graphene oxide-hydroxyl apatite based biological ceramic slurry; and (2) preparation method of the 3 D printing graphene oxide-hydroxy apatite-based biological ceramic slurry.