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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
zinc polycarboxylate working time is __
2.5 minutes
17
polycarboxylate can have poor __ due to film thickness
marginal sealing
18
polycarboxylate will not bond to __
gold
19
polycarboxylate use has __ over the years
lessened
20
polycarboxylate will bond to most __
alloys
21
glass ionomer known as __
acid- base cement
22
glass ionomer have good success even if they have not been __
mixed properly
23
glass ionomers __ affects film thickness
working time
23
glass ionomer can be sustained for __ of time
long periods
23
glass ionomer is extremely __ tolerant but fairly soluble
moisture
24
glass ionomer __ film thickness
very thin
25
glass ionomer mixing and placement of cement completed with __
2-2.5 minutes
25
glass ionomer __ one of the most important advantages
fluoride release
25
modified glass ionomers added __ monomers
hydrophilic methyacrylate
26
glass ionomer __ working times allow more flow and seats the restoration
longer
26
modified glass ionomers created in 1990's to overcome the __ of glass ionomers
high solubility
27
modified glass ionomers has the same advantages as __
glass ionomer
27
modified glass ionomers has low __
early strength
28
modified glass ionomers are __ sensitive during setting time
moisture
29
modified glass ionomers usually takes __ for the final set
24 hours
30
provisional/ temporary is temporary restoration on tooth while waiting for __ from the lab
final restoration
31
provisional/ temporary needs to __ removed
easily
32
provisional/ temporary most have __
eugenol
32
provisional/ temporary needs to be easily removed without harming __
periodontium, tooth prep, pulp
33
provisional/ temporary eugenol provides __ effect
antibacterial
34
provisional/ temporary types
temp-bond, ultra-temp, relyx temp
35
when selecting provisional/ temporary consider
-how long -how retentive -which permanent cement -esthetic zone

Patient care II (12 decks)

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