Dental Implants Prosthetic Restoration 2

Question 1

An implant overdenture retained by locator attachments provides which primary advantage over a conventional full denture?

Accepted Answer

Significantly improved retention and stability with minimal bone resorption prevention

Answer

Eliminates all denture movement

Answer

Does not require any maintenance

Answer

Functions identically to fixed implant restorations

Question 2

The McGill consensus (2002) recommended that the minimum standard of care for edentulous mandibular patients should be:

Accepted Answer

A two-implant retained mandibular overdenture

Answer

A full arch fixed implant bridge

Answer

Conventional complete denture alone

Answer

A four-implant overdenture

Question 3

In the All-on-4 concept, the two posterior implants are tilted at approximately what angle?

Accepted Answer

45 degrees

Answer

10 degrees

Answer

30 degrees

Answer

60 degrees

Question 4

What is the purpose of a 'pink porcelain' or 'pink acrylic' component in full-arch implant prostheses?

Accepted Answer

It replaces lost gingival and bone tissue for esthetic and phonetic support

Answer

It is a cosmetic choice only

Answer

It reinforces the metal framework

Answer

It prevents bacterial plaque accumulation

Question 5

Implant-supported crowns should NOT have which type of occlusal contact?

Accepted Answer

Heavy working-side interferences during lateral excursion

Answer

Centric stops on the central fossa

Answer

Mutually protected occlusion contacts

Answer

Anterior guidance involvement

Question 6

A provisional (temporary) implant restoration during osseointegration should be:

Accepted Answer

Out of occlusion or in minimal occlusal contact to avoid disturbing integration

Answer

In heavy occlusal contact to stimulate bone healing

Answer

A permanent acrylic crown cemented definitively

Answer

Always avoided — no restoration until final crown