Materials and Technique Question and answers verified to pass 2024/2025
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Course
DENTURES,DX AND TX PLANNING
Institution
DENTURES,DX AND TX PLANNING
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...
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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