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Patient Care 2 > Cements and Their Uses > Flashcards

Cements and Their Uses Flashcards

1
Q

TYPES OF
CEMENTS
(6)

A 
ZINC PHOSPHATE
ZINC OXIDE EUGENOL
ZINC POLYCARBOXYLATE
GLASS IONOMER
RESIN-MODIFIED GLASS IONOMER
PROVISIONAL CEMENTS
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2
Q

IT IS IMPORTANT TO NOTE THAT NO
CEMENT WILL PERFORM TO IT’S OPTIMAL
LEVEL CLINICALLY WITHOUT AN ADEQUATE
PREPARATION THAT INCLUDES (2)

A

GOOD

RESISTANCE AND RETENTION FORM.

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3
Q

READ INSTRUCTIONS CAREFULLY-

A

MIXING,
HANDLING AND PHYSICAL PROPERTIES
VARY.

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4
Q

skipped

CEMENTS (8)

A 
 BIOCOMPATIBILITY
 RETENTION
 MECHANICAL PROPERTIES-withstand occlusal 
forces, high tensile strength
 MARGINAL SEAL
 LOW FILM THICKNESS
 EASE OF USE
 RADIOPACITY
 AESTHETICS
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5
Q

FIRST CEMENT APPEARING IN DENTAL LITERATURE

A

ZINC

PHOSPHATE

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6
Q

IS THE STANDARD WHICH OTHER CEMENTS ARE ASSESSED (GOLD STANDARD).

A

ZINC

PHOSPHATE

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7
Q 
ZINC 
PHOSPHATE advantage (4)
A

THIN FILM THICKNESS AND PROVEN RELIABLITY.
 LOW SOLUBILITY WHICH RESISTS BREAKDOWN IN THE MOUTH
 LOW THERMO-CONDUCTIVITY. PROVIDES LESS SENSITIVITY TO HOT AND COLD
 LONG SHELF LIFE

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8
Q 
ZINC 
PHOSPHATE disadvantage (6)
A

INITIAL LOW pH-can lead to pulpal irritation
 NO CHEMICAL ADHESION/BOND
 NO ANTIBACTERIAL PROPERTIES
 POOR ESTHETICS ( for all porcelain )
 LONG SETTING TIME: 2.5-8 MINS.
 EXOTHERMIC

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9
Q

EXOTHERMIC

A

-chilled glass slab when mixing, small amounts of powder added to liquid.

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10
Q

— TYPES OF ZOE, WHICH DIFFER IN THEIR

PROPERTIES AND USES.

A

TWO

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11
Q

TYPE I-

A

is less strong and is used for temporary

restorations and for temporary cementation.

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12
Q

TYPE II-

A

is reinforced and is stronger. It is
referred to as an intermediate restorative. It
can last for 6-12 months in the mouth. Used for
a tooth that cannot be restored immediately

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13
Q

BENEFIT OF ZOE IS –

A

NEUTRAL pH. IT HAS A
SEDATIVE OR SOOTHING EFFECT ON THE DENTAL
PULP. A PROTECTIVE OR INSULATING BASE OR
LINER IS NOT REQUIRED.

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14
Q 
ZINC OXIDE 
EUGENOL (ZOE)-
CEMENT
NOT USED UNDER COMPOSITE OR ACRYLIC 
RESTORATIONS BECAUSE (2)
A

EUGENOL IS
INCOMPATIBLE WITH THESE MATERIALS AND ALSO
RETARDS THEIR SETTING PROCESS.

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15
Q

THE TYPE AND
INTENDED USE OF THE
MATERIAL DETERMINE
WHETHER

A 
THE POWER 
IS INCORPORATED INTO 
THE LIQUID IN 
INCREMENTS OR ALL AT 
ONCE.
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16
Q

THE MIXING TIME IS

USUALLY

A

30-60

SECONDS.

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17
Q

SETTING TIME IS

APPROXIMATELY

A

3-5

MINUTES

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18
Q

DEVELOPED IN 1968 TO CIRCUMVENT PULPAL

PROBLEMS ASSOCIATED WITH LOW Ph.

A

ZINC

POLYCARBOXYLATE

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19
Q

FIRST CEMENTING SYSTEM TO OBTAIN AN
ADHESIVE AGENT THAT BONDED TO ENAMEL &
DENTIN.

A

ZINC

POLYCARBOXYLATE

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20
Q

ZINC
POLYCARBOXYLATE
action

A

antibacterial

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21
Q

ZINC
POLYCARBOXYLATE
working time

A

shorter: 2-5 min

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22
Q

ZINC
POLYCARBOXYLATE
mixing

A

NEEDS TO BE MIXED QUICKLY (30-40 sec).

23
Q

POLYCARBOXYLATE

powder incorporated in

A

large quanitties

24
Q

POLYCARBOXYLATE

fragility

A

not as fragile as zinc phosphate

25
Q

POLYCARBOXYLATE
CAN HAVE POOR —DUE TO
FILM THICKNESS

A

MARGINAL SEALING

26
Q

POLYCARBOXYLATE
SOMETIMES DOESN’T SUPPORT — STRESS
AS WELL AS NEWER CEMENTS

A

OCCLUSAL

27
Q

POLYCARBOXYLATE

WILL BOND TO MOST ALLOYS BUT NOT TO —

A

GOLD

28
Q

POLYCARBOXYLATE
DUE TO ITS POTENTIAL FOR PLASTIC
DEFORMATION IT IS MUCH MORE DIFFICULT TO

A

REMOVE EXCESS CEMENT

29
Q

POLYCARBOXYLATE
ALTHOUGH BONDS WELL TO — ITS
USE HAS LESSENED OVER THE YEARS

A

ENAMEL/DENTIN

30
Q

DURELON-

A

ZINC POLYCARBOXYLATE

31
Q

USED WORLDWIDE 1972 EXCEPT US-1977.

KNOWN AS AN ACID-BASE CEMENT.

A

GLASS IONOMER

32
Q

PART OF THE SUCCESS OF GLASS IONOMER
CEMENTS IS THEIR PERFORMANCE IS GOOD EVEN
IF

A

THEY HAVE NOT BEEN PROPERLY MIXED.

33
Q

GLASS IONOMER

thickness

A

very thin film thickness

34
Q

GLASS IONOMER

moisture tolerance and solubility

A

extremely moisture tolerate

fairly soluble

35
Q

GLASS IONOMER
ONE OF THE IMPORTANT
ADVANTAGES.

A

 FLUORIDE RELEASE-
IT CAN BE SUSTAINED FOR LONG
PERIODS OF TIME.

36
Q

GLASS IONOMER

FLUORIDE-INITIAL RAPID RELEASE FOLLOWED BY

A

A SUSTAINED,LOWER LEVEL DIFFUSSION

RELEASE.

37
Q

GLASS IONOMER

FLUORIDE RELEASE INCREASES IN —
CONDITIONS AND WILL — THE pH
(BUFFERING).

A

ACIDIC

INCREASE

38
Q

GLASS IONOMER
HELPS PROTECT THE TOOTH/MARGINS FROM
FURTHER

A

TOOTH DECAY.

39
Q

GLASS IONOMER

radiograph

A

radioopaque

40
Q

GLASS IONOMER
MULTI-USES- (3)

CONTAINS SILVER PARTICLES FOR

A

LINER,
LUTING AGENT,
BUILD-UP MATERIAL( Ketac-Silver, Miracle Mix).

strength

41
Q

EARLY 1990’S- TO OVERCOME THE HIGH

SOLUBILITY OF GLASS IONOMERS.

A

CEMENTS-RESIN-
MODIFIED GLASS
IONOMERS

42
Q

CEMENTS-RESIN-
MODIFIED GLASS
IONOMERS

ADDED

A

HYDROPHILLIC METHYACRYLATE

MONOMERS.

43
Q

CEMENTS-RESIN-
MODIFIED GLASS
IONOMERS

what kind of cememnt

A

acid-base

44
Q

CEMENTS-RESIN-
MODIFIED GLASS
IONOMERS

adv and disadv

A

ALL THE SAME BENEFITS/ADVANTAGES OF GLASS
IONOMER CEMENTS.

DISADVANTAGES-LOW EARLY STRENGTH AND
MOISTURE SENSITIVITY DURING SETTING.

45
Q

CEMENTS-RESIN-
MODIFIED GLASS
IONOMERS

usually takes – hrs for the final set

A

24

46
Q

GLASS IONOMERS
IN GENERAL
WORKING TIME CAN AFFECT FILM THICKNESS-

A

LONGER WORKING TIMES ALLOW MORE FLOW

AND WILL AID IN SEATING THE RESTORATION.

47
Q

GLASS IONOMERS
IN GENERAL
ONCE THE MATERIAL BEGINS TO SET, THE (2)

A

VISCOSITY RISES RAPIDLY & FLOW BECOMES

IMPOSSIBLE.

48
Q

GLASS IONOMERS
IN GENERAL

 EXTREMELY IMPORTANT THAT MIXING AND
PLACEMENT OF THE CEMENT IS COMPLETED
WITHIN

A

2-2.5 MINUTES

49
Q

CEMENTS-PROVISIONAL/TEMPORARY

KEY ROLE IS

A

KEEPING THE TEMPORARY
RESTORATION ON THE TOOTH WHILE THE
PATIENT IS WAITING FOR THE FINAL
RESTORATION TO RETURN FORM THE LAB.

50
Q

CEMENTS-PROVISIONAL/TEMPORARY
NEEDS TO BE EASILY REMOVED FROM PREPARED
TOOTH WITHOUT HARMING
(3)

A

PERIODONTIUM,TOOTH PREPARATION, OR PULP.

51
Q

CEMENTS-PROVISIONAL/TEMPORARY

MOST HAVE

A

EUGENOL (ZOE)-although eugenol
can have a negative effect on acrylic resins and
composite resin cements.

52
Q

CEMENTS-PROVISIONAL/TEMPORARY

THE EUGENOL PROVIDES

A

ANTIBACTERIAL EFFECT

53
Q

TEMP (3)

A

-BOND, ULTRA-TEMP, RELYX TEMP

54
Q

CEMENTS-
PORVISIONAL/TEMPORARY
When selecting (4)

A

 HOW LONG
 HOW RETENTIVE
 WHAT WILL PERMANENT CEMENT BE
 WORKING IN AESTHETIC ZONE

Patient Care 2 (15 decks)

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