CIT Bone Grafting & Osseointegration Flashcards

What is osseointegration in the context of dental implantology?

Answer: The direct structural and functional connection between living bone and implant surface

Osseointegration, defined by Brånemark, is the direct contact between living bone and the implant surface at the microscopic level without intervening connective tissue.

Which bone graft source uses bone harvested from a different location in the same patient?

Answer: Autograft

An autograft uses the patient's own bone (e.g., from the chin, ramus, or iliac crest), making it the gold standard due to its osteogenic, osteoinductive, and osteoconductive properties.

Deproteinized bovine bone mineral (DBBM) used as a bone graft material is classified as a:

Answer: Xenograft

DBBM (e.g., Bio-Oss) is derived from bovine (cow) bone and is classified as a xenograft — a graft sourced from a different species.

Which property of a bone graft material describes its ability to provide a scaffold for new bone ingrowth?

Answer: Osteoconduction

Osteoconduction refers to the scaffold or lattice property that guides new bone growth by providing a physical framework for ingrowth of blood vessels and osteoprogenitor cells.

A sinus lift (sinus augmentation) procedure is performed primarily when:

Answer: Posterior maxillary bone height is insufficient for implant placement

A sinus lift elevates the Schneiderian membrane and places bone graft material in the maxillary sinus floor to create adequate bone height for posterior implants.

Which surface treatment of titanium implants has been shown to enhance osseointegration by increasing surface roughness?

Answer: Sand-blasting and acid-etching (SLA)

SLA (sand-blasted, large-grit, acid-etched) surface treatment creates a micro-rough topography that increases surface area and promotes bone cell attachment.