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Dental Assisting > Dental Materials > Flashcards

Dental Materials Flashcards

1
Q

What is a base?

A

The main component in a mixture

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2
Q

What is a catalyst?

A

The chemical that initiates the chemical reaction

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3
Q

What is chemistry?

A

Science dealing with the composition of matter and the changes in composition that matter may undergo.

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4
Q

What is the composition of matter?

A

Mixture, Solution, Solubility

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5
Q

What is a mixture?

A

Two or more substances not chemically combined

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6
Q

What is a solution?

A

A homogenous mixture

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7
Q

What is solubility

A

How well something dissolves.

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8
Q

What are the basic application properties of dental materials?

A

Flow, Adhesion, Retention, and curing or polymerization

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9
Q

What is the function of dental liners, bases and DBA’s?

A

reduce the microscopic gap between the surface of dentin and the restorative material.

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10
Q

When do you use a liner?

A

when pulp is exposed because it is a pulp protector.

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11
Q

What is a DBA?

A

Dentin Bonding Agents. i.e. Amalgambond

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12
Q

What is the Intermediate Restorative material (IRM)

A

A reinforced Eugenol Composition

Temporary Sedative Restorative Material

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13
Q

What are the uses for IRM?

A

Reduce sensitivity and discomfort of a tooth
Maintain the function and esthetics of a tooth
prevent the shifting of adjacent teeth

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14
Q

What is the ratio for mixing dental materials covered in class?

A

1:1 ratio powder:water

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15
Q

What is Alginate Impression material used for?

A

preliminary impressions

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16
Q

Which impression material is used for more final impression?

A

Elastomeric

17
Q

What is Amalgam?

A

An alloy containing a mixture of silver, tin, copper, mercury, and zinc.

18
Q

What must be used when mixing Dental Stone?

A

Vibrator, to remove the air bubbles, medium setting

19
Q

How do you pour dental stone for edentulous impressions?

A

from one corner to the other, allowing to remove air and water.

20
Q

How thick should the base be on a dental impression?

A

15mm, thick
3-5mm form posterior tooth or landmark
3-5mm form buccal and anterior sulcus.

Dental Assisting (5 decks)

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