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NDAP NAVDEN 102 Unit 4: Dental Materials > Lesson 4.1: Dental Materials > Flashcards

Lesson 4.1: Dental Materials Flashcards

1
Q

An alloy of silver, tin, copper, mercury, and zinc

A

Amalgam

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2
Q

Main or supporting ingredient

A

Base

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3
Q

Chemical accelerant without being consumed

A

Catalyst

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4
Q

Preserved or finished by a chemical or physical process

A

Cured

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5
Q

An acidic cutting process on a surface

A

Etching

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6
Q

A soothing colorless liquid made from clove oil

A

Eugenol

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7
Q

Capable of being shaped without being damaged

A

Malleability

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8
Q

The process of mixing

A

Trituration

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9
Q

The thickness of a liquid that impedes its flow

A

Viscosity

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10
Q

What effect does Eugenol have on pulpal tissue

A

Sedative Effect

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11
Q

TRUE OR FALSE:

Direct application of Eugenol to pulp tissue may cause necrosis

A

True
If Zinc Oxide-Eugenol is applied to the dentinal cavity, Eugenol is diffused through the dentin to the pulp, DO NOT directly apply it to the pulp

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12
Q

TRUE OR FALSE:

Zinc Oxide-Eugenol may be used under composite restorative material

A

False

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13
Q

Used as a liner or base under composite, amalgam, metal, and ceramic restorations

A

Glass Ionomer Base (Vitrabond)

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14
Q

TRUE OR FALSE:

Vitrabond liner may be used for direct pulp capping

A

False

Vitrabond liner is not recommended for direct pulp capping

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15
Q

Ratio of powder to liquid for Vitrabond

A

1 scoop of powder to 1 drop of liquid

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16
Q

Uses and characteristics of Calcium Hydroxide (Dycal)

A
  1. Pulp Protector
  2. Self-Curing
  3. May be used under any restorative material
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17
Q

Reinforced Zinc Oxide-Eugenol Composition

A

Intermediate Restorative Material (IRM)

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18
Q

TRUE OR FALSE:

Intermediate Restorative Material is temporary and may last up to one year

A

True

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19
Q

Amalgam Brands:

Mixing time for Tytin

A

4-5 seconds

20
Q

Amalgam Brands:

Mixing time for Dispersalloy

A

13 seconds

21
Q

Amalgam Brands:

Mixing time for Valiant

A

13 seconds

22
Q

Purpose of Acid Etched Restorative Resin Material

A
  1. Increases the bond between the enamel and resin

2. Provides an added source of retention, increasing marginal seal

23
Q

Procedure for Acid Etched Restorative Resin Material

A
  1. Dry cavity prep thoroughly
  2. Apply etch to the enamel walls
  3. Rinse/Dry thoroughly, after 15-60 seconds
  4. Treated tooth will appear frosted
24
Q

Precautions for Acid Etched Restorative Resin Material

A
  1. Avoid contact with soft tissue, rinse thoroughly if contact is made
  2. Protect the pulp to prevent irritation or injury
25
Q

Uses and Characteristics of Amalgam

A
  1. Predominately for all tooth surfaces of premolars and molars
  2. Pre-capsulated - triturate to mix capsules
  3. Soft, pliable, easily condensed and shaped
  4. High compression strength to withstand biting force
  5. Does not bond directly to the tooth - possibility of microleakage and recurrent decay
26
Q

Uses and Characteristics of Glass Ionomer Cement

A
  1. Cementing crowns and FPD
  2. A temporary filling
  3. Releases fluoride ions, which inhibits recurring decay
27
Q

Uses and Characteristics of OptiBond

A
  1. A Bonding Agent
  2. Fluoride Releasing
  3. Light Sensitive
28
Q

Procedure for OptiBond

A
  1. Move the dental light away from the treatment area
  2. Apply one drop to the mixing pad, or provider’s glove (Provider’s preference)
  3. Pass a bent microbrush to the provider
  4. Light-cure to speed up the setting reaction
29
Q

Uses and Characteristics of Composite Restorative Material

A
  1. Used on anterior teeth due to high visibility, and small posterior restorations
  2. Bonds well with enamel surfaces
  3. Applied in 1-2mm increments
  4. Light-cure to speed up setting reaction
30
Q

Uses and Characteristics of Dental Sealants

A
  1. Clear or tooth-colored
  2. Filled or unfilled resin-based material is applied to pits and fissures
  3. Curing light will be required to speed up setting reaction
31
Q

TRUE OR FALSE:
Dental Sealants -
Filled resin-based material requires checking occlusion for possible adjustments

A

True

32
Q

TRUE OR FALSE:
Dental Sealants -
Unfilled resin-based material requires checking occlusion for possible adjustments

A

False

The material will wear naturally

33
Q

Purpose of Dental Sealants

A
  1. Fill in deep pits and fissures susceptible to dental decay/caries, which progressively destroys tooth surfaces
  2. A physical barrier protecting against future decay
34
Q

Contraindications for Dental Sealants

A
  1. Caries

2. Fluoride or oils recently applied by fluoridated prophy paste

35
Q

Alginate Impression Material:

Working time for Regular Set

A

2 Minutes

36
Q

Alginate Impression Material:

Setting time for Regular Set

A

4.5 Minutes

37
Q

Alginate Impression Material:

Working Time for Fast Set

A

1 Minute

38
Q

Alginate Impression Material:

Setting Time for Fast Set

A

1 to 2 Minutes

39
Q

Uses and Characteristics of Alginate Impression Material

A
  1. For preliminary impression, used to create study casts

2. Irreversible hydrocolloid

40
Q

Alginate Impression Material:

Setting time is directly affected by what factors

A
  1. The temperature of the water
  2. The temperature of the DTR
  3. The temperature of the patient’s mouth
41
Q

What are the four types of Polyvinyl Siloxane Impression Materials

A
  1. Light Body (Low Viscosity) - Used in a syringe to express around prepped tooth/teeth
  2. Regular Body (Medium Viscosity) - Used in a syringe to express around prepped tooth/teeth or in tray
  3. Heavy Body (High Viscosity) - Used in tray
  4. Putty - Used in tray
42
Q

Uses and Characteristics of Polyvinyl Siloxane Impression Material

A
  1. Crown and Bridge Impressions
  2. Precise duplication of models (diagnostic casts) in a dental laboratory
  3. Reversible hydrocolloid
43
Q

A sheet with information of workplace chemical and physical hazards, manufacturer supplies with product, and maintained in a centralized location

A

Safety Data Sheet (SDS)

44
Q

TRUE OR FALSE:

Chemical Misuse can cause injury or death

A

True

45
Q

Mercury Hazards:

Mercury Spills

A

Immediately cleaned IAW manufacturer’s instruction using PPE

46
Q

Mercury Hazards:

Mercury Precautions

A
  1. Avoid touching hair or face
  2. Thorough handwashing
  3. NEVER wear jewelry when handling

NDAP NAVDEN 102 Unit 4: Dental Materials (1 decks)

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