PURPOSE: To provide the bar for forming an abutment tooth provided with a flange, the outer flank of which is formed as a non-cutting part region, in the part corresponding to the gingiva side of a cutting part region so as to prevent the formation of cutting flaws in the part of the gingiva corresponding to the circumference of the shoulder forming region of the abutment tooth at the time of forming the shoulder of the abutment tooth.

CONSTITUTION: This bar 10 for forming the flanged abutment tooth is formed with the flange part 13 which is formed to the outside diameter larger than the outside side of the cutting region and the outer surface side of which is formed as the non-cutting part region in the part corresponding to the gingiva side of the cutting part region.