IMPLANT FOR ARTIFICIAL TOOTH

摘要

PURPOSE:To improve the install work and the fixing efficiencies by engaging the abutment engaging part of a fixture with the engaging recess part of an abutment, and fastening those parts on the upper part of a shaft cylinder of the fixture to be united in a body from a screw hole of the abutment by means of an abutment screw. CONSTITUTION:A fixture 1 is so constructed that a fixture thread part 5 which has an included angle of thread of 42 to 47 and has plural valleylike notches 4 on the circumference of the ridge is formed on the outer peripheral surface of a shaft cylinder 2 for forming an inner screw part 3. A star abutment engaging part 6 is formed on the upper part of the shaft cylinder 2. On the other hand, an abutment 11 is so constructed that a connecting short leg cylinder part 15 wherein an engaging recess part 14 having its shape corresponding to that of the abutment engaging part 6 is formed is connected to the lower end of a bottomed cylinder 12 having a screw hole 13 at the base. The abutment engaging part 6 and the engaging recess part 14 are engaged with each other to be placed and supported, and fastened to be united in a body from a screw hole 13 to the inner screw part 3 by an abutment screw.