GLASS IONOMER Flashcards
water-based cements known as glass-polyalkenoate cements
GLASS IONOMER CEMENTS
GLASS IONOMER CEMENTS consists of:
o aluminosilicate
o fluoride interacted with a poly (alkenoic acid)
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GLASS IONOMER CEMENTS is 24% of the cement is water
T
materials consisting of ion cross-linked polymer materials
surrounding glass-reinforced filling particles
GLASS IONOMER CEMENTS
GLASS IONOMER CEMENTS liquid forms
Polyacrylic
Itatonic
Tartaric
Silica
A. 29.0
B. 16.6
C. 34.3
D. 7.3
E. 3.0
F. 9.9
G. 13-19 microns
A
Alumina
A. 29.0
B. 16.6
C. 34.3
D. 7.3
E. 3.0
F. 9.9
G. 13-19 microns
B
Ca Fluoride
A. 29.0
B. 16.6
C. 34.3
D. 7.3
E. 3.0
F. 9.9
G. 13-19 microns
C
Al Fluoride
A. 29.0
B. 16.6
C. 34.3
D. 7.3
E. 3.0
F. 9.9
G. 13-19 microns
D
Sodium Fluoride
A. 29.0
B. 16.6
C. 34.3
D. 7.3
E. 3.0
F. 9.9
G. 13-19 microns
E
Al Phosphate
A. 29.0
B. 16.6
C. 34.3
D. 7.3
E. 3.0
F. 9.9
G. 13-19 microns
F
Grain Size
A. 29.0
B. 16.6
C. 34.3
D. 7.3
E. 3.0
F. 9.9
G. 13-19 microns
G
Tartaric
A. 29.0
B. 16.6
C. 34.3
D. 7.3
E. 3.0
F. 5% by weight
G. 13-19 microns
F
luting cements
A. Type I
B. Type II
C. Type II.I
D. Type II.2
E. Type III
A
restorative cements
A. Type I
B. Type II
C. Type II.I
D. Type II.2
E. Type III
B
restorative aesthetic (auto cure and dual cure)
A. Type I
B. Type II
C. Type II.I
D. Type II.2
E. Type III
C
restorative reinforced
A. Type I
B. Type II
C. Type II.I
D. Type II.2
E. Type III
D
lining or base cements
A. Type I
B. Type II
C. Type II.I
D. Type II.2
E. Type III
E
sets by chemical reaction alone
Auto Cure
setting time: 3-5 mins.
Auto Cure
mixing time: 40 seconds
Auto Cure
sets initially via light activated reaction and the acid base reaction continues overtime
Dual Cure
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GLASS IONOMER CEMENTS indications:
persons with high caries index
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GLASS IONOMER CEMENTS indications:
areas that are not subjected to prolonged temperature changes
F
[areas subjected to prolonged temperature changes]
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GLASS IONOMER CEMENTS indications:
root surface caries in Class V locations
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T / F
GLASS IONOMER CEMENTS indications:
slot-like prep in either Class II or Class III cervical locations
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T / F
GLASS IONOMER CEMENTS indications:
areas of abrasion, erosion without cavity prep–eroded areas in
cervical
T
T / F
GLASS IONOMER CEMENTS indications:
→ pits and fissures
→ deciduous teeth
T
T / F
GLASS IONOMER CEMENTS indications:
Class I lingual approach
F
[Class III lingual approach]
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GLASS IONOMER CEMENTS indications:
→ repairs of defective marginal restorations and any minimal cavity preparation
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T / F
GLASS IONOMER CEMENTS indications:
core build-up and temporary restoration where future veneers are to be placed
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T / F
GLASS IONOMER CEMENTS indications:
sealing of root surfaces
T
T / F
GLASS IONOMER CEMENTS CONTRAINDICATIONS:
Class V because of stress on the incisal edges of anterior teeth during mastication
F
[Class IV because of stress on the incisal edges of anterior teeth during mastication]
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GLASS IONOMER CEMENTS CONTRAINDICATIONS:
Class II
T
T / F
GLASS IONOMER CEMENTS CONTRAINDICATIONS:
3 loss cusp area
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T / F
GLASS IONOMER CEMENTS CONTRAINDICATIONS:
large carious lesions especially when esthetics are involved
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T / F
GLASS IONOMER CEMENTS ADVANTAGES:
→ anti-cariogenic property
o silicate glass of GI releases fluoride
T
T / F
GLASS IONOMER CEMENTS ADVANTAGES:
adheres to the Ca of the tooth substance
*there is chemical bonding of GI and tooth
T
T / F
GLASS IONOMER CEMENTS ADVANTAGES:
biocompatible to the pulp
T
T / F
GLASS IONOMER CEMENTS ADVANTAGES:
High acid attack on the tooth compared to other cements
F
[low acid attack on the tooth compared to other cements]
T / F
GLASS IONOMER CEMENTS ADVANTAGES:
free carboxyl ions of GI has high potential for adhesion to the
tooth
T
T / F
GLASS IONOMER CEMENTS ADVANTAGES:
satisfactory color matching
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T / F
GLASS IONOMER CEMENTS ADVANTAGES:
translucency of GI
o acceptable esthetically
o mainly composed of glass ions
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GLASS IONOMER CEMENTS ADVANTAGES:
no reports of microleakage or recurrent caries because it
releases fluoride and bonds to the tooth
T
T / F
GLASS IONOMER CEMENTS ADVANTAGES:
clinical handling is not demanding
T
T / F
GLASS IONOMER CEMENTS ADVANTAGES:
→ long-term stability in the oral environment
→ no galvanic reaction
T
T / F
GLASS IONOMER CEMENTS ADVANTAGES:
→ placed in one appointment
→ often placed without need for local anesthesia
T
T/ F
LIMITATIONS OF GLASS IONOMER CEMENTS
→ toughness, tensile strength, wear resistance and hardness are inferior to those of resin composite
T
T/ F
LIMITATIONS OF GLASS IONOMER CEMENTS
high initial solubility after mixing; setting must take place in an area free from fluid contamination
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T/ F
LIMITATIONS OF GLASS IONOMER CEMENTS
relatively long setting time (3-5 mins.) depending on the product
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T/ F
LIMITATIONS OF GLASS IONOMER CEMENTS
poor polishability due to the heterogeneous and porous
structure of the material
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T/F
DISADVANTAGES
→ not as aesthetic as composite restoration
→ not recommended for use in areas of significant concern
→ limited strength and wear resistance
→ slow set
o may be sensitive to moisture over extended periods
T
CLINICAL APPLICATION OF RESTORATIVE GI CEMENTS [5]
→ sandwich technique
→ Class III, Class V, and small Class I
→ primary dentition
→ core buildup
→ atraumatic restorative treatment (ART)