Extra Oral implants have a number of different indications for use, such as retaining cranio facial prosthesis’ and bone conductor hearing aids. The general placement procedure is similar in most extra oral cases and therefore an example for an auricular prosthesis will be used. The availability of bone as well as ideal placement for attachment of the prosthesis are considerations that need to be taken into account when dealing with extra oral implants. Case planning with the prosthesists making use of CT scans or other case planning devices, is highly recommended. At this stage the length of implant would be determined from the availability of bone.