Test 1 Flashcards
(47 cards)
What type of base stimulates secondary dentin by making the pH rise?
Calcium Hyroxide
Define Strain
Internal rearrangement of atoms to adjust to the stress (deformation/length) —> leads to distortion
Define Tensile
Forces on object directed away from each other stretched or elongated - ability of material to RESIST pulling apart
Patient education for a 12 year old who plays field hockey should include _______
Mouth gaurds
Define Resilience
The energy necessary to cause permanent deformation (ortho material and impression materials must be resilient)
Radiographically cement bases appear _______
Radiopaque
Why can dental cements be used as a base?
Because particle size is microfill and increases the viscosity and flow of the cement, it also adds strength, and bonds to enamel and dentin
Internal Stain on Maxillary incisors would require what type of restoration?
Porcelain Veneers
New material was used and it was suppose to harden when the light was placed on it, but it didn’t. What occurred?
It didn’t cure
What has the lowest viscosity?
Flowable
What is the difference between an inlay and an onlay?
Inlay: restoration stays within the cusps and the marginal ridges
Onlay: restoration goes beyond marginal ridge and covers the cusps
Filler size and polishability would be greatest for what size?
Microfill
What base/liner releases fluoride?
Glass Ionomers
Define Hue
Color
Define Chroma
The vividness or strength of a color (hue)
Define Value
The lightness or darkness of a color (hue)
Define Translucency
Refers to way light is affected when entering a substance
Why do we place insulating bases under restorations?
To increase secondary dentin, to decrease acidity, etc = All of the above
What is the main advantage for Ceramic over PFM?
Esthetics
What material is placed in very deep cavities?
Calcium Hydroxide
Which cement should NOT be used under composite fillings?
ZOE
Layer created when using high speed bur is
Smear layer
Many cements shouldn’t be dispensed until ready to use because
Dehydration, etc = All of the above
Characteristics of cements include
Mod composition, strength, solubility in water = All of the above
