Dental Implants Bone Grafting & Ridge Augmentation

Question 1

What makes autogenous bone grafts the gold standard compared to all other graft types?

Accepted Answer

They possess osteogenic, osteoinductive, and osteoconductive properties

Answer

They are more readily available in large quantities

Answer

They eliminate all risk of disease transmission

Answer

They require no donor site surgery

Question 2

Which bone graft classification describes material derived from bovine or porcine bone that has been processed to remove organic components?

Accepted Answer

Xenograft

Answer

Autograft

Answer

Allograft

Answer

Alloplast

Question 3

What is the primary mechanism by which Guided Bone Regeneration (GBR) achieves bone growth?

Accepted Answer

Using barrier membranes to exclude fast-proliferating soft tissue cells

Answer

Delivering antibiotics directly to the surgical site

Answer

Stimulating implant surface bioactivity

Answer

Increasing blood supply through vascular growth factors

Question 4

Which of the following bone graft materials is classified as an alloplast?

Accepted Answer

Hydroxyapatite

Answer

Demineralized freeze-dried bone allograft (DFDBA)

Answer

Bovine-derived bone mineral (Bio-Oss)

Answer

Iliac crest cancellous autograft

Question 5

The Schneiderian membrane must be carefully elevated and preserved during which dental implant procedure?

Accepted Answer

Maxillary sinus augmentation

Answer

Guided bone regeneration at extraction sites

Answer

Ridge splitting for horizontal augmentation

Answer

Mandibular nerve transposition

Question 6

Which intraoral donor site is most commonly used to harvest cortical block bone grafts for ridge augmentation?

Accepted Answer

Mandibular symphysis or ramus

Answer

Maxillary tuberosity

Answer

Iliac crest

Answer

Zygomatic arch

Question 7

Which sinus augmentation approach is preferred when residual alveolar bone height in the posterior maxilla is less than 4 mm?

Accepted Answer

Lateral window (Caldwell-Luc) approach

Answer

Osteotome (crestal) technique

Answer

Distraction osteogenesis

Answer

Ridge expansion technique