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Materials and Technique Question and answers verified to pass 2024/2025
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Materials and Technique Question and answers verified to pass 2024/2025 Materials and Technique: Impressions _________- resistance to flow Tear energy- resistance of material to tear upon ______ and ______ from the mouth Viscosity setting and removal The ability of the material to...

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  • September 17, 2024
  • 29
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • DENTURES,DX AND TX PLANNING
  • DENTURES,DX AND TX PLANNING

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Materials and Technique: Impressions
_________- resistance to flow


Tear energy- resistance of material to tear upon ______ and ______ from the
mouth


Viscosity
setting and removal




The ability of the material to return to its original dimensions without significant
distortion upon removal from the mouth is known as _________


The ability to maintain the _______ of the impression over time is known as
_________


Elastic Recovery


accuracy, Dimensional Stability




Thixotropic - an impression material has high flow under ________, but low
flow under ________


_______ Strength- ability of an impression to withstand _______ without
permanent deformation

,pressure, gravity


yield strength, stress




List impression materials that are hydrophobic


List impression material that is hydrophillic


Aquasil and PVS- phobic


Alginate - philic




The practitioner should consider the following when making a material
selection for final impression:


- Properties and uses of the material


- type of prosthesis to be made


- severity of _______ or presence of ______ teeth


- patient tolerance of material setting time


- desired _______

, undercuts, mobile
accuracy




Optimal qualities for prosthodontic impression materials:


- high / low viscosity for adaptation, but viscous enough to stay in tray


- ________, accurate adaptation to oral tissues


- pleasant taste and odor


- set to ______ or _______


low
wettability
rubbery or rigid solid




Optimal qualities for prosthodontic impression materials cont'd:


- Upon removal, it should have adequate strength to avoid distortion and
tearing and should have __________ with no permanent deformation


- should be ________ stable until pouring of the cast

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