LLUSD (2015) - Chapter 22 - Implant Abuntments An external hex was the first type of connection that was developed between an implant and the prosthetic component.*TrueFalseThe term "segmented" indicates the prosthetic component is a one-piece component.*TrueFalseThere are only two designs of internal connections between the implant and the prosthetic component.*TrueFalseThe name used for the pre-fabricated plastic or metal sleeve used in fabricating custom abutments is a "UCLA" abutment because it was developed at the University of California, Los Angeles.*TrueFalseAbutments can either be obtained from manufacturers in a variety of prefabricated forms or they can be custom fabricated by a dental laboratory.*TrueFalseWith a segmented prosthetic component, an abutment is attached to the implant using a screw and the definitive crown/prosthesis is then attached to the abutment.*TrueFalseA non-segmented prosthetic component is more expensive to fabricate than a segmented prosthetic component.*TrueFalseCustom abutments are usually fabricated using a pre-fabricated metal or plastic sleeve that attaches to the implant and can be customized in form by grinding and the addition of wax or resin.*TrueFalseThe primary reason for using a ceramic abutment is to optimize the esthetic result.*TrueFalseThere are two types of connections between an implant and the prosthetic component: external and internal.*TrueFalseWhen a non-segmented prosthetic component is being planned, the access hole to the screw that will attach the prosthesis to the implant should be located within the central groove area of a posterior tooth or the cingulum area of an anterior tooth.*TrueFalseCustom abutments permit the development of a wider range of emergence profiles than are available with prefabricated abutments.*TrueFalseWhen the interocclusal space is very limited (3-4 millimeters), the use of an intermediary abutment is usually the design of first choice.*TrueFalseThe prosthetic component has been described as "segmented" or "non-segmented."*TrueFalseWhen abutments are used in conjunction with implant single crowns or implant fixed partial dentures, the crown/prosthesis can either be cemented to the abutment or attached to the abutment via screws.*TrueFalseThere are prefabricated abutments available that can correct for a 60 degree angle variation between the long axis of an implant and the long axis of the crown.*TrueFalseIntermediary abutments are used to correct alignment differences between the long axes of the implant(s) and the crown/prosthesis.*TrueFalseThe prosthetic component is the term that has been proposed when describing the part(s) that attach to the implant.*TrueFalse
