CCA Adhesives & Retention Systems 3

Question 1

In adhesive science applied to facial prosthetics, 'peel strength' specifically measures resistance to forces applied in which direction?

Accepted Answer

At an angle peeling the bond progressively from one edge

Answer

Parallel to the bonded surface (shear)

Answer

Perpendicular pull away from the surface (tensile)

Answer

Rotational torque around the bond center

Question 2

In a combination retention system for a midfacial prosthesis, which elements are most commonly integrated?

Accepted Answer

Osseointegrated implant bar-clip framework supplemented with adhesive at the prosthesis margins

Answer

Surgical sutures combined with neodymium magnetic clips

Answer

Liquid latex with double-sided foam tape along the entire border

Answer

Cyanoacrylate spot bonding combined with zinc oxide cement

Question 3

Which adhesive formulation performs BEST for patients in humid climates or those who perspire heavily during daily activities?

Accepted Answer

Moisture-resistant silicone-based adhesive

Answer

Water-soluble paste adhesive for easy removal

Answer

Standard latex-based medical adhesive

Answer

Epoxy-based permanent bonding adhesive

Question 4

When using a magnetic retention system for an auricular prosthesis on osseointegrated implants, the magnets are embedded in which components?

Accepted Answer

Both the implant abutment housings and the fitting surface of the prosthesis

Answer

The patient's peri-implant soft tissue only

Answer

Only the external visible surface of the prosthesis

Answer

A removable external headband interface worn over the prosthesis

Question 5

Which factor is the PRIMARY consideration when selecting between adhesive retention and implant-retained bar-clip retention for an auricular prosthesis?

Accepted Answer

Adequacy of remaining tissue for adhesive retention, patient dexterity, activity level, and preference

Answer

Patient age and life expectancy

Answer

The color complexity of the prosthesis

Answer

The manufacturer of the silicone material used in fabrication

Question 6

The term 'cohesive failure' in prosthetic adhesive bonding refers to:

Accepted Answer

Failure occurring within the adhesive layer itself rather than at either bonded interface

Answer

The adhesive failing to bond to the prosthesis or skin surface

Answer

The prosthesis material splitting along an internal plane

Answer

The skin surface tearing away from the underlying dermis

Question 7

When instructing a patient on the MOST critical daily practice to prevent cumulative skin complications with adhesive-retained prostheses, the anaplastologist should emphasize:

Accepted Answer

Completely remove all adhesive residue each day and inspect the skin for early signs of breakdown before reapplication

Answer

Apply fresh adhesive directly over any visible skin redness to accelerate healing

Answer

Use nail polish remover for the most thorough adhesive dissolution

Answer

Leave adhesive in place for extended periods to allow the skin to adapt and strengthen