Patent ID: 8491301

Claim:
A guide block for a dental implant procedure, the guide block comprising: a main body having a through-hole; and a pair of connecting rings extending in one direction from the main body, the pair of connecting rings having round inner peripheral surfaces, wherein projecting ends project from the main body at opposite ends of the through-hole up to a first height, wherein each of the projecting ends comprises four outer peripheral surfaces; and wherein in a plan view shape of each of the projecting ends, two opposite surfaces of the four outer peripheral surfaces of the projecting ends are formed in a circular arc having a curvature corresponding to a curvature of the round inner peripheral surfaces of the connecting rings, and two other outer peripheral surfaces of the four outer peripheral surfaces are formed as straight outer peripheral surfaces, wherein the pair of connecting rings are separated from each other by a distance corresponding to a thickness of the main body, and a thickness of each of the pair of connecting rings is greater than the first height, and wherein the pair of connecting rings have coupling grooves facing each other and having depths corresponding to the first height.