Implant Design & Fabrication Flashcards
7 cards from real CIT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Implant Design & Fabrication flashcards as text
Which implant surface treatment increases surface roughness to promote osseointegration by creating a microtopography that enhances osteoblast attachment?
Answer: Acid etching with HCl/H2SO4
Acid etching with HCl/H2SO4 creates a micro-rough surface topography that significantly enhances osteoblast adhesion and osseointegration.
A tapered implant body design is primarily chosen over a parallel-walled design in which clinical scenario?
Answer: Extraction sockets with divergent walls
Tapered implants conform well to the natural shape of extraction sockets, allowing better primary stability when socket walls diverge apically.
What is the primary function of the implant neck (collar) design in reducing crestal bone loss?
Answer: Providing a rough microgrooved surface to engage cortical bone
Microgrooved or roughened implant necks engage cortical bone and help maintain crestal bone levels by reducing stress concentrations.
Hydroxyapatite (HA) coating on dental implants is applied primarily to:
Answer: Accelerate early bone-to-implant contact and osseointegration
HA coatings are bioactive and mimic natural bone mineral, accelerating early osseointegration by promoting direct bone apposition.
In a platform-switching design, the prosthetic abutment diameter is smaller than the implant platform diameter. This configuration primarily:
Answer: Shifts the microgap away from the crestal bone to reduce bone resorption
Platform switching moves the implant-abutment junction inward, repositioning biological width establishment away from crestal bone and reducing resorption.
Which threading pattern provides the highest insertion torque and primary stability by maximizing bone compression during placement?
Answer: Square threads with aggressive pitch
Square threads have a flat load-bearing surface that distributes compressive forces broadly, generating high insertion torque and excellent primary stability.
When fabricating a custom implant abutment using CAD/CAM technology, which material offers the best combination of esthetics and mechanical strength for an anterior single-tooth restoration?
Answer: Zirconia (Y-TZP)
Zirconia abutments provide excellent tooth-colored esthetics while offering high flexural strength suitable for anterior restorations with acceptable esthetic demands.