FAC Materials & Techniques 3

Question 1

Which cannula tip design is preferred to minimize the risk of intravascular injection compared to sharp needles?

Accepted Answer

Blunt-tip microcannula

Answer

Blunt-tip microcannulas deflect off vessel walls rather than piercing them, substantially reducing the likelihood of intravascular filler placement.

Question 2

The recommended injection depth for treating nasolabial folds with a high-G' HA filler is typically:

Accepted Answer

Subcutaneous

Answer

Nasolabial folds are best addressed subcutaneously, where the filler can volumize the underlying tissue without creating a visible ridge in the skin.

Question 3

When performing a thread lift with PCL (polycaprolactone) threads, the primary long-term advantage over PDO threads is:

Accepted Answer

Longer duration due to slower degradation (up to 2 years)

Answer

PCL degrades more slowly than PDO, maintaining its structural support and collagen-stimulating effect for up to 18–24 months.

Question 4

Lidocaine is commonly added to HA filler preparations to:

Accepted Answer

Reduce patient discomfort during injection

Answer

Pre-mixed lidocaine in HA formulations provides in-situ analgesia, improving patient comfort without affecting the filler's volumizing properties.

Question 5

The retrograde linear threading technique involves:

Accepted Answer

Depositing filler as the needle is withdrawn along the treatment path

Answer

In retrograde threading, product is released during needle withdrawal, creating an even column of filler along the desired plane.

(FAC) Facial Aesthetics Certification Practice Test