LLUSD - Chapter 13 - Grafting Alveolar Defects Prior To Implant Placement Grafted bone must have functional stress restored to avoid rapid resorption.*TrueFalseXenogenic grafts are harvested from a cadaver donor.*TrueFalseMovement of a semi-permeable membrane after placement has not been found to compromise bone regeneration.*TrueFalseAutogenous bone remains the "gold standard" for grafting alveolar defects.*TrueFalseThe geometry and size of the alveolar defect helps to determine the harvest site.*TrueFalseThere 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.*TrueFalseBoth guided tissue regeneration (GTR) and block grafts require overcorrection of the defect.*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.*TrueFalse
