11 Questions
What is a key characteristic of hydrophobic impression materials?
Strict moisture control
Why is tear resistance important for impression materials?
To resist tearing during removal from the mouth
What is critical for accurate replication of intraoral structures?
Dimensional stability
Which factor may lead to dimensional changes in impression materials?
Absorption of moisture from the environment
Why is accurate reproduction of details essential for impression materials?
To have an exact negative imprint of teeth
What is the main purpose of an impression in crown and bridge prosthodontics?
To provide a negative likeness of the form and relationship of teeth and oral tissues
Why is it essential for an impression to include enough uncut tooth surface beyond the preparation?
To ensure accurate reproduction and location of the finish line
What role does the hydrophilicity of impression material play in final impressions for crowns and bridges?
It enhances surface detail reproduction due to good wetting properties
Why should an impression be bubble free according to the text?
To prevent distortion and fracture during removal from undercut regions
What is meant by the requirement for an impression to be elastic after placement in the mouth?
The impression must allow for withdrawal from undercut regions without distortion
Why is it crucial for an impression to accurately reproduce adjacent teeth and tissues?
To allow proper contouring of the restoration
Learn about conventional and digital impressions in Fixed Partial Dentures (FPD) and the requirements for a good impression in crown and bridge prosthodontics. Understand the importance of accurately capturing the form and relationship of teeth and surrounding oral tissues.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
