LLUSD (2015) - Chapter 13 - Grafting Alveolar Defects Prior To Implant Placement There is sound scientific data showing that osseointegration ocurrs between implants and alternative bone filling materials (that is materials other than autogenous bone) such as freeze-dried demineralized bone or other substitutes.*TrueFalseXenogenic grafts are harvested from a cadaver donor.*TrueFalseBoth guided tissue regeneration (GTR) and block grafts require overcorrection of the defect.*TrueFalseAutogenous bone remains the "gold standard" for grafting alveolar defects.*TrueFalseThe geometry and size of the alveolar defect helps to determine the harvest site.*TrueFalseGrafted bone must have functional stress restored to avoid rapid resorption.*TrueFalseIt has been proposed that the minimum dimensions of the remaining maxillary alveolar process should be a faciolingual dimension of 5 millimeters and a height of 10 millimeters.*TrueFalseMovement of a semi-permeable membrane after placement has not been found to compromise bone regeneration.*TrueFalse
