Provide a dental block by which, when a gap is formed between the gum and a dental abutment due to recession of the gum after fixing a dental prosthesis by using a dental implant system, a cutting process can be easily performed on a new dental abutment for covering the gap part.A dental block is constituted by a block body 1 having a one surface 1a being a plane an engagement portion 2 to be inserted in and engaged with a dental implant fixture F, the engagement portion 2 having a bolt through hole 2a and being formed in the one surface 1a of the block body 1 a ring-shaped abutment surface 3 to be abutted against a top surface on the oral cavity inner side of the dental implant fixture F, the ring-shaped abutment surface 3 being positioned more inside the block body 1 than the one surface 1a, being formed from an end portion 2b positioned at the most oral cavity inner side of the engagement portion 2 to surround the end portion 2b, and being parallel to the one surface 1a of the block body 1 and a diameter-enlarged portion 4 having a tapered shape whose diameter increases from the ring-shaped abutment surface 3 toward the one surface 1a of the block body 1.
