Journal of Prosthetic Dentistry

A method of locating the abutment screw access channel with cone-beam computed tomography and a 3D-printed drilling guide


      In managing loose abutment screws, locating precisely the position of the screw access channel is difficult. This technique describes the use of cone-beam computed tomography (CBCT) and surgical guide planning software to locate the screw access channel with the intention of retrieving a loosened cement-retained implant-supported prosthesis. The method minimizes damage to the abutment crown assembly.
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