Rests and Rest Seats in Dentistry

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Questions and Answers

What is the purpose of a primary rest in a partial denture?

Prevent impingement of soft tissue and close small spaces between teeth
Prevent vertical movement of the prosthesis and transmit forces to supporting teeth (correct)
Provide vertical support for the partial denture and maintain occlusal relationship
Direct and distribute occlusal loads to abutment teeth and prevent settling of the denture

What is the main function of an auxiliary rest in a partial denture?

Prevent impingement of soft tissue
Maintain occlusal relationship by preventing settling of the denture
Provide additional support or indirect retention (correct)
Direct and distribute occlusal loads to abutment teeth

What is the purpose of a rest seat in relation to a partial denture rest?

Restore continuity of the arch and prevent food impaction
Maintain components in their planned positions
Prepared surface on an abutment to receive the rest (correct)
Absorb stress transmitted from the prosthesis without damaging supporting structures

How does a rest contribute to preventing damage to supporting structures in a partial denture?

<p>Directs forces apically down the long axis of the tooth (A)</p> Signup and view all the answers

Which statement best describes the general purposes of a rest in a partial denture?

<p>Provide vertical support, direct and distribute occlusal loads, maintain planned positions, prevent impingement of soft tissue, and close small spaces between teeth (D)</p> Signup and view all the answers

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