LLUSD (2015) - Chapter 25 - The Use of Implants For Orthodontic Anchorage The concept of using implants for orthodontic anchorage is relatively new, having been introduced after endosseous root form implants became popular in the 1980's.*TrueFalseWhen Roberts used ramus implants to move molars anteriorly and close a missing mandibular molar space mandibular molar space, the rate of movement per month increased after the first two months.*TrueFalseRoot form implants work well for orthodontic anchorage because they are incapable of movement in the bone.*TrueFalseAnimal studies have shown that root form implants can resist 3 Newton orthodontic forces and 10 Newton orthopedic forces without failing.*TrueFalseWhen root form implants are used for orthodontic anchorage to close an edentulous space, the teeth being moved into the space have been found to move at a rate of about 1.5 millimeters per month.*TrueFalseRoot form implants need to have at least 50% of their surface in direct contact with bone to resist the orthodontic forces placed upon them when they are used for anchorage.*TrueFalseRoot form implants have been used to intrude teeth, extrude teeth, but have not been used to simultaneously intrude one tooth while extruding another tooth.*TrueFalseRoot form implants have been used as anchorage for the purpose of palatal expansion.*TrueFalse
