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Patient care II > Types of cement > Flashcards

Types of cement Flashcards

1
Q

6 types of cements

A

-zinc phosphate
-zinc oxide eugenol
-zinc polycarboxylate
-glass ionomer
-resin- modified glass ionomer
-provisional cements

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2
Q

zinc phosphate advantages

A

-thin film thickness
-reliable
-low solubility
-low thermo- conductivity
-long shelf life

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2
Q

no cement will preform to its optimal clinical level without __

A

adequate preparation

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3
Q

adequate preparation includes good __

A

resistance and retention form

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3
Q

what cement is the gold standard?

A

zinc phosphate

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4
Q

first cement in dental literature

A

zinc phosphate

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5
Q

zinc phosphate disadvantages

A

-initial low pH (can irritate pulp)
-no chemical adhesion
-no antibacterial properties
-poor esthetics
-long setting time
-exothermic

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5
Q

zinc oxide eugenol type I is __

A

less strong and temporary

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6
Q

zinc oxide eugenol benefit is its __

A

neutral pH (soothes pulp)

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7
Q

how long can type II zinc oxide eugenol last in the mouth?

A

6-12 months

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8
Q

zinc oxide eugenol type II is __

A

stronger and an intermediate restorative

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9
Q

with zinc oxide eugenol a __ is not required

A

protective or insulating base

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10
Q

zinc oxide eugenol not used under __ restorations

A

composite or acrylic

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11
Q

zinc oxide eugenol the type and intended use of materiel determine whether the powder is incorporated __

A

in increments or all at once

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12
Q

zinc oxide eugenol not used under composite or acrylic restorations because incompatible and __ their setting process

A

retards

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13
Q

zinc polycarboxylate first cementing system to obtain an __

A

adhesive agent bonded to enamel and dentin

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13
Q

zinc oxide eugenol mixing time is __

A

30-60 seconds

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14
Q

zinc polycarboxylate has __ action

A

antibacterial

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14
Q

zinc oxide eugenol setting time is __

A

3-5 minutes

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15
Q

zinc polycarboxylate needs to be mixed __

A

quickly (30-40 seconds)

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15
Q

polycarboxylate powder incorporated in __

A

large quantities

15
Q

polycarboxylate not as fragile as __

A

zinc phosphate

15
Q

polycarboxylate much more difficult to remove excess __

A

cement (rubbery)

16
Q

polycarboxylate sometimes doesn’t support __ as well as newer __

A

occlusal stress, cements

16
Q

zinc polycarboxylate working time is __

A

2.5 minutes

17
Q

polycarboxylate can have poor __ due to film thickness

A

marginal sealing

18
Q

polycarboxylate will not bond to __

A

gold

19
Q

polycarboxylate use has __ over the years

A

lessened

20
Q

polycarboxylate will bond to most __

A

alloys

21
Q

glass ionomer known as __

A

acid- base cement

22
Q

glass ionomer have good success even if they have not been __

A

mixed properly

23
Q

glass ionomers __ affects film thickness

A

working time

23
Q

glass ionomer can be sustained for __ of time

A

long periods

23
Q

glass ionomer is extremely __ tolerant but fairly soluble

A

moisture

24
Q

glass ionomer __ film thickness

A

very thin

25
Q

glass ionomer mixing and placement of cement completed with __

A

2-2.5 minutes

25
Q

glass ionomer __ one of the most important advantages

A

fluoride release

25
Q

modified glass ionomers added __ monomers

A

hydrophilic methyacrylate

26
Q

glass ionomer __ working times allow more flow and seats the restoration

A

longer

26
Q

modified glass ionomers created in 1990’s to overcome the __ of glass ionomers

A

high solubility

27
Q

modified glass ionomers has the same advantages as __

A

glass ionomer

27
Q

modified glass ionomers has low __

A

early strength

28
Q

modified glass ionomers are __ sensitive during setting time

A

moisture

29
Q

modified glass ionomers usually takes __ for the final set

A

24 hours

30
Q

provisional/ temporary is temporary restoration on tooth while waiting for __ from the lab

A

final restoration

31
Q

provisional/ temporary needs to __ removed

A

easily

32
Q

provisional/ temporary most have __

A

eugenol

32
Q

provisional/ temporary needs to be easily removed without harming __

A

periodontium, tooth prep, pulp

33
Q

provisional/ temporary eugenol provides __ effect

A

antibacterial

34
Q

provisional/ temporary types

A

temp-bond, ultra-temp, relyx temp

35
Q

when selecting provisional/ temporary consider

A

-how long
-how retentive
-which permanent cement
-esthetic zone

Patient care II (12 decks)

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