Podcast
Questions and Answers
What is the function of an occlusal rest?
What is the function of an occlusal rest?
- Creating a recess in a tooth to receive the rest
- Supporting the denture base against vertical forces (correct)
- Elevating the vertical dimension of occlusion
- Preserving the location of the tooth in relation to the rest
What is a rest seat?
What is a rest seat?
- A part of a clasp assembly rest or an auxiliary rest
- A rigid extension of a partial removable dental prosthesis
- A projection or attachment on the side of an object
- A recess in a tooth or restoration created to receive an occlusal, incisal, cingulum, or lingual rest (correct)
What are the requirements for rests and rest seats?
What are the requirements for rests and rest seats?
- To elevate the vertical dimension of occlusion
- To fit the tooth accurately and preserve its location in relation to the tooth (correct)
- To transmit stress at an angle to the long axis of the tooth
- To be weak enough to deform under loads
What happens if rests do not transmit stress along the long axis of the tooth?
What happens if rests do not transmit stress along the long axis of the tooth?
What is a partial denture without occlusal rests called?
What is a partial denture without occlusal rests called?
What is the function of an occlusal rest?
What is the function of an occlusal rest?
What is the purpose of a rest seat?
What is the purpose of a rest seat?
What happens if rests do not transmit stress along the long axis of the tooth?
What happens if rests do not transmit stress along the long axis of the tooth?
Why must rests fit the tooth accurately?
Why must rests fit the tooth accurately?
What is the consequence of a partial denture without occlusal rests?
What is the consequence of a partial denture without occlusal rests?
Flashcards
Occlusal rest function
Occlusal rest function
Supports denture base against vertical forces.
Rest seat
Rest seat
A recess in tooth/restoration for rest.
Rest & rest seat requirements
Rest & rest seat requirements
Accurate fit, tooth position preserved.
Stress transmission along tooth axis
Stress transmission along tooth axis
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Partial denture no occlusal rests
Partial denture no occlusal rests
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Food collection under occlusal rest
Food collection under occlusal rest
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Purpose of rest seat
Purpose of rest seat
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Rest stress misalignment consequence
Rest stress misalignment consequence
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Accurate rest fit importance
Accurate rest fit importance
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Partial denture without rests impact
Partial denture without rests impact
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Study Notes
Occlusal Rests and Rest Seats
- The function of an occlusal rest is to transmit vertical forces to the abutment tooth, preventing movement of the partial denture.
- A rest seat is a preparation on the tooth surface that receives the occlusal rest.
Requirements for Rests and Rest Seats
- Rests and rest seats must be accurately fitted to prevent movement and ensure proper transmission of forces.
- Rests must transmit stress along the long axis of the tooth to prevent tooth damage.
Consequences of Improper Rests
- If rests do not transmit stress along the long axis of the tooth, it can lead to tooth damage or root fracture.
- A partial denture without occlusal rests is called a "claspedenture", which can lead to tooth movement and instability.
Importance of Accurate Fit
- Rests must fit the tooth accurately to prevent movement and ensure proper transmission of forces.
- Accurate fit prevents tooth damage and ensures the success of the partial denture.
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Description
Test your knowledge of dental prosthetics with a quiz on rests and rest seats. Learn about projections, attachments, and rigid extensions used in partial removable dental prosthesis.
