Objective To evaluate the corrosion behavior of Gold alloy, Titanium alloy, Ni-Cr alloy and ti implant abutment in vitro.

At present, all methods exist in some problems, no matter the advanced clinical operate or spraying ceramic on dental implant neck and ceramic abutment etc.

To remove an abutment using forceps grasp the abutment with a definite purchase and apply a simultaneous twisting and pulling motion to release the abutment from the implant.