Implant abutment

A dental implant abutment that is coupled to a fixture that becomes an artificial tooth root by being implanted to an alveolar bone, the implant abutment comprising:

• a main body having an internal space and an upper hole, a lower hole and a side hole;
• a first rotating member located in the internal space of the main body which is able to rotate within the main body with respect to a first rotational axis, and which has a first gear portion and a separation-prevention protrusion on an upper end portion thereof, and is operably connected with a lower male screw portion sized to extend downwardly through the body lower hole and screw coupled to the fixture;
• a second rotating member located in the body side hole and internal space of the main body which is able to rotate with respect to a second rotational axis which crosses the first rotational axis, and which has a second gear portion that engages the first gear portion of the first rotating member whereby rotation of the second rotating member causes rotation of the first rotating member, and a separation-prevention groove which receives the separation-prevention protrusion of the first rotating member;
• and
• a stopper member that is coupled to the main body and limits movement of the second rotating member so that the separation-prevention protrusion is within the separation-prevention groove.