LLUSD (2015) - Chapter 7 - Implant Fixed Partial Dentures Implant fixed partial dentures were found to provide a significantly better quality of life for patients than removable partial dentures.*TrueFalseMaxillary implant loss with fixed partial dentures was greater than mandibular implant loss.*TrueFalseProsthesis screw fractures occurred more frequently than fractures of the esthetic material used to veneer the occlusal surface.*TrueFalseImplant loss in the maxilla exceeded 10%.*TrueFalseImplant fractures have occurred more frequently with implant fixed partial dentures than with complete arch prostheses.*TrueFalseImplant fractures occur more frequently in the maxilla than the mandible.*TrueFalseWith 4 millimeter diameter implants, the area of occlusal contact (occlusal table width) should not be offset (extend lateral to the implant) by a distance greater than 4 millimeters with posterior implant fixed partial dentures.*TrueFalseIt is recommended that at least 3 implants be used to support fixed partial dentures.*TrueFalseWhen 2 implants are used to support a fixed partial denture, it was recommended that the dimensions of the occlusal surface and cuspal inclinations on the prosthesis be reduced.*TrueFalseMore loose screws and metal component fractures occurred clinically when fixed partial dentures were supported by 2 implants.*TrueFalseThere was no difference in the incidence of prosthesis failure when fixed partial dentures were supported by 2 implants as opposed to prostheses supported by more than 2 implants.*TrueFalseMore implant fractures occurred with prostheses supported by 2 implants than with prostheses supported by more than 2 implants.*TrueFalseWhen placing 3 or more implants for a fixed partial denture, it is biomechanically advantageous to offset one of the implants to the facial or lingual rather than place all of the implants in a straight line.*TrueFalseCompressive forces and bending moments tended to be lower when an offset arrangement (one implant positioned to the facial or lingual of the other implants) of 3 implants was compared with an in-line arrangement.*TrueFalseIt has been commonly recommended that 4 millimeter diameter implants be placed so there is 7 millimeters between the centers of adjacent implants, thereby preserving 3 millimeters of bone between the implants.*TrueFalseIn a clinical study, preserving at least 3 millimeters of bone between adjacent implants minimized crestal bone loss.*TrueFalseUsing wider diameter implants (5 or 6 millimeters) is a method that has been used to compensate for the presence of factors that may produce a biomechanical overload.*TrueFalseDisease present in adjacent natural teeth should be treated before implants are placed since the disease could lead to implant loss.*TrueFalseBarium impregnated resin is used to make the prosthetic teeth in a radiographic template visible on the radiograph.*TrueFalseThe preferred surgical template design is one that overlays the teeth and does not depend on soft tissue contact for positional stability.*TrueFalseA prospective clinical study determined that gingival recession rarely occurs around implants as long as the tissue is handled carefully during the surgical uncovery process.*TrueFalseThere are no advantages to making an implant level impression as opposed to placing an abutment and making an abutment level impression.*TrueFalseBefore pouring an impression, an elastomeric material is placed around the analogs that will replicate the soft tissue*TrueFalse
