10 Questions
What is the primary purpose of an impression in crown and bridge prosthodontics?
To accurately reproduce the preparation of the tooth and surrounding tissues
Which property of the impression material is important for capturing undercut regions on the external tooth surface?
Elasticity
What is the role of hydrophilicity in an impression material used for crowns and bridges?
It enhances the material's ability to capture surface detail
Why is it important for an impression to be bubble-free?
To prevent distortion of the impression, especially in the finish line area
What is the purpose of reproducing the adjacent teeth and tissues in the impression?
To allow for accurate articulation of the cast and proper contouring of the restoration
What is the primary characteristic of hydrophobic impression materials?
Poor surface wetting
What property is essential for impression materials to ensure safe removal from the mouth?
Adequate tear resistance
Which of the following is NOT a factor that can cause dimensional changes in impression materials?
Exposure to ultraviolet light
What is the critical requirement for impression materials regarding the replication of intraoral structures?
Accurate dimensional stability
Which property of impression materials is essential for accurately capturing fine details?
Accurate reproduction of details
Learn about the requirements for a good impression in crown and bridge prosthodontics, focusing on the exact duplication of the prepared tooth and surrounding oral tissues. Explore the importance of capturing the finish line location and configuration.
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