CIT CIT Bone Grafting & Osseointegration 4

Question 1

Which growth factor found in platelet-rich plasma (PRP) is most directly responsible for stimulating osteoblast proliferation at a graft site?

Accepted Answer

PDGF (Platelet-Derived Growth Factor)

Answer

PDGF is the primary mitogen in PRP that directly stimulates osteoblast proliferation and recruitment to the graft site.

Question 2

A patient presents with a severely atrophic maxilla requiring vertical bone augmentation. Which technique is most appropriate for gaining more than 5 mm of vertical height?

Accepted Answer

Distraction osteogenesis

Answer

Distraction osteogenesis can achieve vertical gains exceeding 5 mm by slowly separating bone segments to stimulate new bone formation in the distraction gap.

Question 3

What is the primary advantage of using a cross-linked collagen membrane over a non-cross-linked one in GBR procedures?

Accepted Answer

Prolonged resorption time allowing longer barrier function

Answer

Cross-linking extends the collagen membrane's resorption time, maintaining the barrier function longer during the critical bone maturation phase.

Question 4

During sinus lift surgery, the Schneiderian membrane is perforated. Which of the following is the BEST immediate management strategy?

Accepted Answer

Repair with a collagen membrane patch and continue the procedure if perforation is small

Answer

Small perforations can be managed with a resorbable collagen membrane patch that acts as a scaffold, allowing the procedure to continue safely.

Question 5

In the context of implant osseointegration, what does the Implant Stability Quotient (ISQ) measure?

Accepted Answer

Resonance frequency of the implant-bone interface via an electromagnetic transducer

Answer

ISQ uses resonance frequency analysis (RFA) to quantify implant stability non-invasively on a scale of 1–100.

(CIT) Certified Implantology Technician Practice Test

(CIT) Certified Implantology Technician Practice Test

CIT CIT Bone Grafting & Osseointegration 4