Term
| A Patient presents with a carious lesion on the occlusal surface of tooth #30. Which classification does this fall under? |
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Definition
Class I
Class I are one surface restorations |
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Term
| Caries on the gingival one-this of both anterior and posterior teeth are considered which classification? |
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Definition
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Term
| What are considered forms of stress? |
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Definition
-Compressive
-Tensile
-Shear
-Torsion
-Bending
**NOTE: Elasticity is NOT a form of stress** |
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Term
| A Patient presents with a carious lesion on the occlusal surface of tooth #30. Which classification does this fall under? |
|
Definition
Class I
Class I are one surface restorations |
|
|
Term
| Caries on the gingival one-third of both anterior and posterior teeth are considered which classification? |
|
Definition
|
|
Term
| What are considered forms of stress? |
|
Definition
-Compressive
-Tensile
-Shear
-Torsion
-Bending
**NOTE: Elasticity is NOT a form of stress** |
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Term
| What is the modulus of elasticity formula? |
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Definition
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Term
| True or False, low contact angle is good wetting? |
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Definition
| True- Low contact angle of less than 90 degrees which is hydroPHILIC |
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Term
| When you can put as much stress as you want on something, but it will go back to its original state and not be deformed |
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Definition
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Term
| Something can withstand a force without breaking, but it will be deformed |
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Definition
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Term
| True or False, high contact angle is good wetting |
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Definition
| False- High contact angle of greater than 90 degrees beads and is hydroPHOBIC |
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Term
| Impressions give __________ reproductions of tissue. |
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Definition
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Term
| Dental casts give a _________ reproduction. |
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Definition
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Term
| What type of impression material is the most popular for restorative procedures? |
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Definition
Additional Silicone (PVS)
*If it helps, think that SILICONE breast implants are popular* |
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Term
| What is used as a retarder in alginate? |
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Definition
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Term
| What is considered a reversible impression material? |
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Definition
|
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Term
| What would increase setting time? |
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Definition
-warm water
-decrease of water:powder ratio
-faster mixing rate |
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Term
| What is the ideal environment for an impression that would result in the least amount of dimensional change? |
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Definition
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Term
| When hearing the term "syneresis" what should be associated with it, and what does it mean? |
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Definition
| Alginate; expulsion of water after setting |
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Term
| What should be seen on an impression to be considered acceptable? |
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Definition
| -Maxillary Tuberosity/ Hamular Notch -Retro Molar pad |
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Term
| What would yield a slower setting time? |
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Definition
-Cold water
-Increased water:powder ratio
-Slower mixing rate |
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Term
| Which elastomeric impression material should not be used with latex? |
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Definition
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Term
| True or False, amalgam is considered a good insulator? |
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Definition
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Term
| What type of amalgam is high in copper and usually has the best tensile and comprehensive strengths? |
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Definition
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|
Term
| In comparison to tooth structure, what is the coefficient of thermal expansion? |
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Definition
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Term
| Which is the weakest phase of amalgams and what is it's make up? |
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Definition
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Term
| Which phase of amalgam is the strongest and least susceptible to corrosion? What is it's make up? |
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Definition
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Term
| What are high noble alloys are composed of? |
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Definition
| 60% noble metal and 40% gold |
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Term
| What are noble alloys composed of? |
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Definition
|
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Term
| List the noble metals and which is the most expensive. |
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Definition
-Gold
-Palladium
-Platinum (**MOST EXPENSIVE**) |
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Term
| What metal are people most likely to be allergic to? |
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Definition
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Term
| Why is silver added to a casting alloy? |
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Definition
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Term
| List the types of ceramics from the weakest/ least opaque to the strongest/ most opaque |
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Definition
-Glassy (weakest/ least opaque)
-Glassy Dominant
-Crystalline Dominant
-Crystalline (Strongest/ Most opaque) |
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Term
| What is the crystal phase in in feldspar? |
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Definition
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|
Term
| Which needs to be cured longer? |
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Definition
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Term
| A restoration needs to be done on tooth #7 and it includes the incisal edge, what classification is it? |
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Definition
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Term
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Definition
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Term
| What are the effects of acid etching a tooth? |
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Definition
| Tooth cleaning and increased wettability |
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Term
| What is the thickness of a custom tray? |
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Definition
|
|
Term
| What percentage of caries occur within pits & fissures? |
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Definition
|
|
Term
| What is the most common material used for a custom tray? |
|
Definition
| Poly Vinyl Acetate (Ethylene Vinyl Acetate) |
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|
Term
| Which fluoride is more neutral? |
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Definition
|
|
Term
| List the steps of sealant placements |
|
Definition
-etch
-rinse
-dry
-Apply sealant
-Cure |
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|
Term
| When a patient comes in for whitening, what characteristic of the tooth are you increasing? |
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Definition
| Value- Amount of lightening or darkening |
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Term
| Ceramic veneers are most often placed on which teeth? |
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Definition
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|
Term
| Ceramics are fired using a technique called what? |
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Definition
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|
Term
|
Definition
Choroma
**As per test C** |
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|
Term
| Amount of lightness or darkness |
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Definition
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|
Term
|
Definition
|
|
Term
| Why are dentures made with porcelain teeth not recommended? |
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Definition
-Heavy
-Abrasive to opposing natural dentition |
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|
Term
| What type of ceramic is most translucent? |
|
Definition
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|
Term
| The indication of how easy an alloy is to polish or indent is it's |
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Definition
|
|
Term
| The energy required to fracture a material is a measure of it's |
|
Definition
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|
Term
| Deformation of a material becomes permanent with the material reaches it |
|
Definition
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|
Term
| This test measures hardness |
|
Definition
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|
Term
| What two types are impression material must be poured up immediately? |
|
Definition
-Irreversible hydrocolloid
-Condensation silicones |
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|
Term
| What solutions are used to disinfect an impression? |
|
Definition
-Sodium hypochlorite
-Iodophor
-Glutaraldehyde |
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|
Term
| In hydrocolloids the viscous liquid state is called |
|
Definition
|
|
Term
| In the rubbery state, hydrocolloid is called |
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Definition
|
|
Term
| If a fluoride has a thixotropic characteristic, that means that is has a |
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Definition
|
|
Term
| What is the purpose of a base? |
|
Definition
-Thermal insulator
-Prevents micro-leakage
-depending on the type, could be a sedative |
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|
Term
| How thick should a base be? |
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Definition
|
|
Term
| What could be used a base? |
|
Definition
-Zinc Phosphate
-ZOE
-Glass ionomer |
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|
Term
| What is a varnish used for? |
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Definition
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|
Term
| What liner promotes the formation of secondary dentin? |
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Definition
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Term
| What cement is water based, releases fluoride, and is a good thermal insulator? |
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Definition
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