LLUSD (2015) - Chapter 6 - Implant Single Crowns Implants that support single crowns have a higher success rate than implants that support other types of prostheses (when the maxillary and mandibular data are combined).*TrueFalseImplant single crowns have been used for longer time periods than other types of prostheses.*TrueFalseThe average implant loss rate associated with implants that support single crowns is 6%.*TrueFalseThe most common complication associated with implant single crowns is the development of a dehiscence prior to stage 2 surgery.*TrueFalseCrowns made for single anterior implants should not extend lateral to the implant by a dimension greater than 2 times the diameter of the implant.*TrueFalseThe mandibular first molar has been the most common site for single implants to fracture.*TrueFalseWhen placing a single implant that will support a posterior single crown, developing a perpendicular relationship between the long axis of the implant and the occlusal plane has been proposed as a means of minimizing the chances of adverse loading.*TrueFalseWhen a single implant is being used to replace a single missing molar, an article discussing load factor control emphasized the importance of controlling the occlusion so it is not heavy and the authors recommended light centric occlusal contact.*TrueFalseIn one study, reducing the incisal guidance on an implant single crown did not affect the forces and moments placed on the implant.*TrueFalseWhen there is a missing mandibular first molar and the mesiodistal dimension of the edentulous space is 14 millimeters, an implant with a 4 millimeter diameter will likely be subjected to overload.*TrueFalseMethods of compensating for the potential overload of 4 millimeter diameter molar implants include narrowing the occlusal table of the crown and placing 2 implants to support one crown.*TrueFalseSingle implants should be centered mesiodistally in the edentulous space.*TrueFalsePlacing an implant in such a manner that it contacts the periodontal ligament space of adjacent teeth has not been problematic as long as the implant does not touch the adjacent root.*TrueFalseWhen an implant is placed so it is lingual to the faciolingual center or adjacent teeth, there will either be deficiencies in the cervical crown contour or the crown will have to overlap the facial soft tissue.*TrueFalseAchieving ideal soft tissue form and interdental papilla height is a highly predictable process.*TrueFalseTo minimize the effect of soft tissue recession in esthetic areas, one study recommended waiting 3 months after abutment connection surgery before making the definitive impression.*TrueFalse
