Implant-Retained Prosthetics Flashcards

Which clinical finding indicates that osseointegration has been achieved and a craniofacial implant is ready for loading?

Answer: Absence of pain on lateral pressure and resonance frequency analysis (ISQ ≥ 60)

Successful osseointegration is confirmed by a stable, immobile implant with no pain on loading and an implant stability quotient (ISQ) of 60 or higher on resonance frequency analysis.

What is the recommended daily hygiene protocol for maintaining peri-implant skin health around percutaneous craniofacial implants?

Answer: Gentle cleaning with a soft brush and mild soap or chlorhexidine, followed by thorough drying

Daily gentle cleansing with a soft brush and appropriate antiseptic solution, followed by complete drying, minimizes biofilm and reduces peri-implant skin reactions.

A locator attachment system used in implant-retained facial prosthetics consists of a nylon retention cap that clicks onto a:

Answer: Locator abutment with a divergence-compensating design

The locator system uses a nylon cap that engages a specially contoured locator abutment capable of accommodating implant angulation divergence up to approximately 40 degrees.

When fabricating a bar for implant-retained auricular prosthetics using CAD/CAM, which material is most commonly milled for the bar framework?

Answer: Pure commercially pure titanium or titanium alloy (Ti-6Al-4V)

Titanium and its alloys are the most commonly milled bar materials due to biocompatibility, corrosion resistance, and favorable strength-to-weight ratio in CAD/CAM workflows.

In the context of implant-retained nasal prosthetics, why is implant placement in the nasal bones often avoided?

Answer: Nasal bone is too thin and vascular to accommodate standard implant dimensions

The nasal bones are typically too thin and fragile to provide the bone volume needed for stable osseointegration of standard craniofacial implants.

Skin reaction grading around percutaneous implants is most commonly classified using which system?

Answer: Holgers classification

The Holgers classification (grades 0–4) is the most widely used system for grading peri-implant skin reactions ranging from no reaction to implant removal required.

Which prosthetic design consideration is MOST important when using magnetic retention for a nasal prosthesis to prevent unacceptable prosthetic movement during sneezing or nose-blowing?

Answer: Combining magnets with anatomic undercut engagement or peripheral seal

Combining magnetic retention with anatomic undercuts or a peripheral tissue seal distributes dislodging forces and resists the high instantaneous forces produced during sneezing.