Patent ID: 8272131

Claim:
A method of manufacturing a fixture of a dental implant, the method comprising: cutting the fixture of the dental implant to form a male screw portion of the fixture; forming a fixed groove in the male screw portion of the fixture to surround a portion of the male screw portion in a circumferential direction of the male screw portion, wherein a protection jig comprising a body portion having a combination hole inserted and fixed in the male screw portion of the fixture; and at least one fixed protrusion formed in an internal side of the combination hole so as to be inserted in the fixed groove of the fixture and fixed therein; performing jig fixing in such a way that the protection jig is inserted in a ring-shaped male screw portion to surround a portion of the male screw portion of the fixture in a circumferential direction of the protection jig; performing surface processing on the male screw portion of the fixture to increase a surface roughness; and performing jig removal in such a way that the protection jig fixed on the male screw portion is removed from the male screw portion of the fixture.