CCA Implant-Retained Prosthetics 3

Question 1

For an orbital prosthesis retained by implants, which is the typical minimum number of implants placed to provide adequate multi-point retention?

Accepted Answer

3

Answer

Three implants are typically placed for orbital prostheses to distribute retention forces and provide stable multi-point attachment.

Question 2

What surface treatment on modern craniofacial titanium implants enhances osseointegration by increasing surface roughness?

Accepted Answer

Acid-etching or sandblasting (SLA surface)

Answer

Sandblasted, large-grit, acid-etched (SLA) surfaces increase microroughness, promoting bone cell attachment and accelerating osseointegration.

Question 3

During abutment connection to an osseointegrated craniofacial implant, why is a torque-controlled wrench used?

Accepted Answer

To avoid stripping the abutment screw and over-compressing peri-implant bone

Answer

A calibrated torque wrench prevents abutment screw stripping and protects peri-implant bone from excessive compressive stress during tightening.

Question 4

Which imaging modality is MOST appropriate for pre-surgical assessment of bone volume and architecture at a proposed nasal implant site?

Accepted Answer

Cone-beam computed tomography (CBCT)

Answer

CBCT provides three-dimensional visualization of bone volume, thickness, and proximity to critical structures at craniofacial implant sites.

Question 5

A silicone auricular prosthesis retained by implants shows lateral displacement during mastication. What is the MOST likely cause?

Accepted Answer

Insufficient number of retention points or bar rigidity

Answer

Lateral displacement during function indicates inadequate retention stability, often due to too few implants or a flexible retention system unable to resist lateral forces.

(CCA) Certified Clinical Anaplastologist Practice Test

(CCA) Certified Clinical Anaplastologist Practice Test

CCA Implant-Retained Prosthetics 3