PROBLEM TO BE SOLVED: To provide a dental implant which has a simple structure, is easily manufactured, and makes an operation and adjustment of a screw locking device easy.SOLUTION: An abutment screw 5 is inserted into an abutment 3, which is threaded to a fixture 2. A lock screw 7 for preventing loosening of the abutment screw 5 is threaded into the abutment 3 as a screw having a direction opposite to the abutment screw 5, and the abutment screw 5 is threaded with its head part suppressed by the lock screw 7. The screw pitch of the lock screw 7 of the abutment 3 is different from the screw pitch of the abutment screw 5 threaded into the fixture 2.
