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midterm > dental materials > Flashcards

dental materials Flashcards

1
Q

what are types of dental cements

A

glass ionomer
zoe
polycarboxylate
zinc phosphate

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2
Q

categories of glass ionomer

A

type I - used as a luting cement
type II - designed to restore erosion in class V
type III - used for liners and bases
type IV - used for pits and fissure sealants
type V - used for cementation of brackets
type VI - used as a core buildup for restorations

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3
Q

categories for zinc oxide eugenol

A

type I - used for temporary cementation
type II - used for permanent cementation
type III - used as a thermal base
type IV - used as a cavity liner

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4
Q

categories for polycarboxylate

A

used for long term temporary cement

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5
Q

categories of zinc phosphate

A

type I, fine grain
- used for cementation for crowns, onlays, inlays, bridges

type II, medium grain
- used as an insulating base for deep cavity preps

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6
Q

what is a liner

A

used inside a cavity preparation to protect pulp

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7
Q

what are bases used for

A

used to protect, insulate and sedate

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8
Q

luting or cement

A

wetting consistency

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9
Q

what are cavity varnishes used for

A

placed inside cavity prep to seal dentinal tubules

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10
Q

what are fluoride varnishes used for

A

placed outside tooth to remineralize and protect enamel

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11
Q

what is a desensitizer used for

A

used instead of a varnish to seal dentinal tubules, protect from hypersensitivity

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12
Q

what products can be used as a liner

A

calcium hydroxide
glass ionomer
polycarboxylate

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13
Q

what are products that can be used as a base under amalgam

A

zoe/irm
polycarboxylate
zinc phosphate

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14
Q

what products can be used as a base under composite

A

glass ionomer
polycarboxylate

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15
Q

what are the sequences of amalgam with dental materials

A

deep cavity prep
- liner, base, cavity varnish, amalgam
moderate cavity prep
- base, cavity varnish, amalgam
minimal cavity prep
- cavity varnish, amalgam

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16
Q

what are the sequences of composite with dental materials

A

deep cavity prep
- liner, base, etch/bond, comp
moderate cavity prep
- base, etch/bond, comp
minimal cavity prep
- etch/bon, comp

17
Q

what are the direct restorative material

A

amalgam
composite
glass ionomer

18
Q

what is amalgam composed of and its indications and contraindications

A

indications:
- used for stress bearing areas
- small to moderate sized caries
- poor personal hygiene
- moisture control is problematic

contraindications:
- aesthetics are important
- history of allergy
- for large restorations

composition:
- mercury
- alloy powders ( silver, tin, copper zinc)
- 1:1 ratio

19
Q

what is composite composed of and its indications and contraindications

A

indications:
- restoration for class I-V restorations
- restoration of surface defects
- closure of diastema
- aesthetic recontouring

contraindications:
- aesthetics are not important
- poor oral hygiene
- cost is a significant factor

composition:
- organic resin matrix
- inorganic fillers
- coupling agent
- pigments

20
Q

what is glass ionomer composed of and its indications and contraindications

A

indications
- primary teeth
- final restoration in non-stress areas
- sealants
- core mateirals for buildup
- provisional restorations

composition:
- resin modified
metal reinforcements

21
Q

what are indications for temporary restorative materials

A
  • reduces sensitivity
  • maintains function and aesthetics before permanent restoration
  • protects margins of prepared tooth
  • prevent shifting
  • if tooth has lost filling, IRM would be used
  • for crown preps, provisional materials would be used
22
Q

what are the temporary restorative materials

A

IRM
- restoration of primary teeth
- caries mangement

provisional restorative materials
- temp crowns are designed to cover major portions of tooth

23
Q

what are indirect restorative materials and types

A

restoration that is fabricated outside the mouth

gold-noble metal alloys
- noble metals are gold, palladium, platinum

ceramic castings
- combination of metallic and non-metallic
- porcelain-fused to metal, porcelain bonded to metal

porcelain
- type of ceramic used in dentistry

24
Q

what is polymerization

A

process where the resin material is changed from pliable state into hardened restoration
- can be light-cured or auto-cured

25
Q

what is tooth whitening and its adverse effects

A

can be done in clinic or ate home
- can cause sensitivity (gum recessions, minute cracks in teeth), and tissue irritation

midterm (11 decks)

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