Actually Joel, you have nicely demonstrated the inherent difficulty of removing the anyridge abutment screw from the abutment , after it has disengaged the implant internal threads. The friction fit of the 1.2mm hex driver is dependant on the condition of the hex driver ( has it worn and it will with use ) and that of the hex in the abutment screw ( which has been torqued , and so some deformation to the hex head) . Yes you push down as you turn it out. Clinically what you have demonstrated with the oversized model actually occurs, the screw is not lifted out. This is an unnecessary dilemma the further the implant is positioned in the mouth, particularly when the patients degree of opening is limited. It is a prosthetic handling annoyance. And yes the removal driver is simple to use , to overcome the friction fit of the 5 degree cold weld. Fortunately , Megagen offers many more abutment connection designs.
Actually Joel, you have nicely demonstrated the inherent difficulty of removing the anyridge abutment screw from the abutment , after it has disengaged the implant internal threads. The friction fit of the 1.2mm hex driver is dependant on the condition of the hex driver ( has it worn and it will with use ) and that of the hex in the abutment screw ( which has been torqued , and so some deformation to the hex head) . Yes you push down as you turn it out. Clinically what you have demonstrated with the oversized model actually occurs, the screw is not lifted out. This is an unnecessary dilemma the further the implant is positioned in the mouth, particularly when the patients degree of opening is limited. It is a prosthetic handling annoyance. And yes the removal driver is simple to use , to overcome the friction fit of the 5 degree cold weld. Fortunately , Megagen offers many more abutment connection designs.
if use finger pressure does not work, can we use the torque wrench?
İt is very useful video👍
Great TIP!