Osseointegration & Healing Flashcards
6 cards from real Dental Implants practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Osseointegration & Healing flashcards as text
Osseointegration was first scientifically described by which researcher?
Answer: Per-Ingvar Brånemark
Professor Per-Ingvar Brånemark discovered osseointegration in the 1950s when titanium chambers could not be removed from rabbit bone, leading to modern implant dentistry.
Osseointegration is best defined as:
Answer: Direct structural and functional connection between living bone and the implant surface without intervening connective tissue
True osseointegration requires direct bone-to-implant contact at the light microscope level without any fibrous tissue at the interface.
The healing time for osseointegration in dense cortical bone (Type I) compared to softer bone (Type IV) is typically:
Answer: Longer in Type I due to reduced vascularity
Dense cortical bone (Type I) has lower vascularity and blood supply, requiring longer healing time (up to 6 months) compared to more vascular cancellous bone.
Which cell type is primarily responsible for new bone apposition on the implant surface during osseointegration?
Answer: Osteoblasts
Osteoblasts are bone-forming cells that migrate to the implant surface and deposit osteoid matrix that eventually mineralizes into bone.
Micro-movement threshold that compromises osseointegration is generally accepted to be:
Answer: Less than 150 microns
Micro-movements exceeding 150 microns at the implant-bone interface disrupt healing and promote fibrous tissue encapsulation instead of osseointegration.
Secondary stability (biological stability) in implant healing refers to:
Answer: Bone apposition and remodeling that increases stability over time
Secondary stability develops as osseointegration progresses — new bone formation increases the bone-to-implant contact area and overall implant firmness.