The application relates to the technical field of
dental instruments, in particular to a loosening-preventing
implant abutment based on a built-in conical driving multi-flap expansion mechanism, which comprises a positioning component, a contact component is slidably installed at the top end of the positioning component, a crown bolt is threadedly inserted into the top end of the contact component, the contact component comprises a matching device and a connecting device, the matching device is fixedly installed at the bottom end center of the connecting device, the matching device comprises a guide vertical block, a crown bottom
abutment, a first anti-falling bottom plate, a hexagonal rod, a guide
conical surface, a connecting center plate, a first reset spring, a first positioning hole, a positioning bolt, a movable cross bar, a supporting vertical frame, a contact circular arc plate, a second reset spring, a positioning cavity, a second anti-falling bottom plate and a connecting vertical rod, the guide vertical blocks are symmetrically fixedly installed at the bottom of the outer ring of the crown bottom
abutment, and the guide vertical blocks are annularly distributed. Through the arrangement of the contact component and the positioning component, the purpose of synchronous strengthening restriction and guide positioning installation of the
implant dental abutment is achieved.