CLB & GI Flashcards
setting time of Glass ionomer cement:
a. 12-5 minutes
b. 3-5 minutes
c. 8-10 minutes
d. 1-2 minutes
b. 3-5 minutes
the smoothest resin surface is the one that is:
a. cured against a matrix
b. produced after using a fine pumice
c. produced after using a polishing strip
with aluminum oxide
d. produced after using a polishing strip
with zirconium silicone
c. produced after using a polishing strip
with aluminum oxide
glass ionomer cements are water based cements known as glass polyalkenoate cements
a. true
b. false
a. true
this is a problem that may result if done when the tooth is dry
a. finishing problems
b. poor retention
c. missing proximal contacts
d. incorrect shade
e. poor isolation of the operating area
f. halo around the enamel margin
g. voids
D
the following characteristics describe auto cure glass ionomer cements except:
a. they require immediate protection from the environment
b. they remain subject to water loss and water uptake for at least 24
c. they have a prolonged setting reaction
d. most auto cure cements are
radiopaque
A
powder component of glass ionomer cement is:
a. polyacrylic acid
b. aluminosilicate fluoride
c. zinc phosphate
d. quartz
B
Diluric Resin
a. tertiary amine
b. triethylene glycol dimethacrylate
c. bisphenol A glycidyl methacrylate
d. aromatic Diketones
B
this ia a technique wherein glass ionomer cement is packed into the bottom of a cavity to replace lost dentin and allowed to set and harden. a composite filling material is then packed on top of the glass ionomer cement
a. tunnel preparation
b. fissure widening and filling
c. pit and fissure sealant
d. sandwich or laminate technique
D
this type of glass ionomer cement is recommended for use when aesthetic considerations are not important but a rapid set and good physical properties are required
a. type III
b. type II.2
c. type I
d. type II.1
B
this is a technique wherein glass ionomer cement is packed into the bottom of a cavity
after it is cleaned using hand instrument only:
a. atraumatic restorative treatment
b. sandwich or laminate technique
c. pit and fissure sealant
d. tunnel preparation or internal fossa
approach
A
the following are limitations of glass ionomer
cements except:
a. biocompatible with the pulp
b. slow setting polishability
c. inferior wear resistance to composites
A
the following is a contraindication for the use of
glass ionomer cement:
a. class V erosion lesion
b. filling of proximal lesions of deciduous tooth
c. pits and fissures
d. replacement of complex class II amalgam restorations
D
after placement of glass ionomer base, the mesial part of the pulpal floor is still concave with a depth of 3mm from the cavosurface margin
a. add 3mm of GIC base on the concave area
b. fill composite
c. add 1mm GIC base on the concave area
d. remove all glass ionomer cement then make a new mixture of GIC then apply to cavity preparation
C
fast set autocure cements are susceptible to water loss two weeks after placement
True
false
T
glass ionomer cements re preventive and conservative restorations because of:
a. fluoride content
b. resistance to erosion to acid
c. fluoride content and ability to adhere to tooth structure
d. ability to adhere to tooth structure
C
glass ionomer cement of choice for restorations
on the proximal surface of deciduous teeth
where aesthetic considerations is important
a. type III
b. type l
C. type II.1
D. type 11.2
D
glass ionomer cement material of choice for
cavity lining or cavity base is:
type I
type II
type II.2
type II.1
Type III
Type III
restorative material with better mechanical
properties than Gl but inferior to composite
zinc phosphate
amalgam
calcium hydroxide
Compomer
Compomer
Are pulp protection materials that are placed if your depth is around more than ___
a. 1 mm
b. 2 mm
c. 3 mm
B
. t or f.
Beyond 2mm you have to protect the pulp so it will not cause any irritants just in case there will be leakage & also will not cause injury to the pulp
T
Are thin layers of material that are used primarily to provide a barrier
a. Cavity Base
b. Cavity Liner
c. Both
B
Are insulating material that also provide terminal protection for the pulp
a. Cavity Base
b. Cavity Liner
c. Both
A
T or F about Cavity Liner
- Not just the pulp but also you want to protect the dentin from residual reactant using out of a restoration or any fluid which may penetrate leaking tooth restoration interface.
- Applied in very thick layers
T,
F (Thick layers)
for chemical insulation to prevent any chemical irritants to which dentin that is already vital (sensitive dentinal tubules that are directly connected to the pulp)
a. Cavity Base
b. Cavity Liner
c. Both
B
Mechanical insulation
a. Cavity Base
b. Cavity Liner
c. Both
A
Provide strong support during insertion of permanent restoration
a. Cavity Base
b. Cavity Liner
c. Both
A
Stimulation of formation of tertiary dentin
a. Cavity Base
b. Cavity Liner
c. Both
B
For thermal insulation
a. Cavity Base
b. Cavity Liner
c. Both
A
Use for direct and indirect pulp capping
a. Cavity Base
b. Cavity Liner
c. Both
B
Sterilize residual carious dentin with its antibacterial action
a. Cavity Base
b. Cavity Liner
c. Both
B
this is done when the tooth has no history of pain/asymptomatic and your excavating caries which are very deep and you can already see the pulp (pink spot). You put calcium hydroxide & temporary restoration material and then observe & hope that it will recover.
a. Direct Pulp Capping
b. Indirect Pulp Capping
B
if you have accidental pulp exposure and you hit it with the bur. And the rest of the cavity is already clean & if it’s less than 0.5mm then you can do direct pulp capping. You put the calcium hydroxide directly on the expose pulp. You observe then hope that it will recover.
a. Direct Pulp Capping
b. Indirect Pulp Capping
A
T or f about CAVITY BASES
1. You put it with a thinner consistency to supplement mechanical support for the restoration by distributing local stresses from the restoration across the underlined dentin surface.
F
T or f about CAVITY BASES
Beyond the tooth, you excavated & still little far from the pulp. So now put your base as a dentin substitute (flat- because your substituting the loss dentin to a base)
T
This is used as a cavity liner and only used in a very thin layer
a. ZINC PHOSPATE CEMENT
b. ZINC EUGENOL CEMENT
c. CALCIUM HYDROXIDE
d. POLYCARBOXYLATE CEMENT
e. VARNISHES
C
CALCIUM HYDROXIDE
1. 2 paste system, when Mix the 2 together and you come up with your liner.
a. Alkyl salicylate (acidic base)
b. Filler calcium hydroxide (basic base)
c. zinc oxide
d. both a and b
e. both a and c
D
That thin only which is sufficient to treat a near actual pulp exposure. What is the thickness?
a. 0.5mm to 1.0 mm thickness
b. 1mm to 2 mm thickness
c. 1 mm to 3 mm thickness
A
CALCIUM HYDROXIDE
Promotes ___ dentin formation
a. primary
b. secondary
c. tertiary
B
CALCIUM HYDROXIDE
Packing factor is very high & mass is not porous
that’s why you only use this as a sub base. Apply it very near the pulp
a. only first is correct
b. only second is correct
c. both are correct
d. both are wrong
B
What happens to pulp in contact with calcium hydroxide?
a. Cannot be used as a base for composite because it can inhibit polymerization
b. Since it is less irritating it has an obtundent effect of the pulp because of the eugenol which suits the pulp.
c.Put the calcium hydroxide in a very thin layer because you will still put your provisional restoration
d. It will somehow undergo coagulation or certain form of necrosis (physiologic type)
D
Powder-liquid dorm
a. ZINC EUGENOL CEMENT
b. ZINC PHOSPATE CEMENT
c. BOTH
C
Powder: zinc oxide
a. ZINC EUGENOL CEMENT
b. ZINC PHOSPATE CEMENT
c. BOTH
A
Powder: Zinc Oxide w/ magnesium oxide + tribismuth oxide + silicone dioxide
a. ZINC EUGENOL CEMENT
b. ZINC PHOSPATE CEMENT
c. BOTH
B
Liquid: 45-55% orthophosphoric acid
a. ZINC EUGENOL CEMENT
b. ZINC PHOSPATE CEMENT
c. BOTH
B
Liquid: Eugenol comes in a bottle
a. ZINC EUGENOL CEMENT
b. ZINC PHOSPATE CEMENT
c. BOTH
A
ZINC EUGENOL CEMENT
stronger type & reinforce ZOE,
a. only first is correct
b. only second is correct
c. both are correct
d. both are wrong
C
ZINC EUGENOL CEMENT
Most amount of shrinkage & most irritating
a. only first is correct
b. only second is correct
c. both are correct
d. both are wrong
D
ZINC EUGENOL CEMENT
Insulation at 1mm thickness. You cannot use a ZOE cement if you are going to use it for composite
a. only first is correct
b. only second is correct
c. both are correct
d. both are wrong
B
ZINC EUGENOL CEMENT
Cannot be used as a base for composite because it can inhibit polymerization. Compatible for composite
a. only first is correct
b. only second is correct
c. both are correct
d. both are wrong
A
ZINC EUGENOL CEMENT
Only use ZOE if your final restoration is CERAMIC. If you mix it thinly, it can also act as a liner
a. only first is correct
b. only second is correct
c. both are correct
d. both are wrong
B
ZINC EUGENOL CEMENT
Since it is less irritating it has an ____ effect of the pulp because of the eugenol which suits the pulp.
a. obtundent
b. cooling
c. plumping
A
ZINC EUGENOL CEMENT
At present, it is not usually used except for OLDER PEOPLE. In cases wherein the patient keeps complaining of sensitivity, ZOE is more friendly.
a. only first is correct
b. only second is correct
c. both are correct
d. both are wrong
B
ZINC EUGENOL CEMENT
ZOE can act as a liner & base depending on the need of the patient. If you use ZOE as a base make sure it is flat before you put the amalgam
a. only first is correct
b. only second is correct
c. both are correct
d. both are wrong
C
The setting time can be accelerated because it is slow setting material if you do the following:
a. Increase the powder-liquid ratio
b. Increase the temperature & humidity
c. Add little water to the mix after mixing is complete
d. Increase pressure movement & time during mixing
e. all
E
ZINC PHOSPATE CEMENT
1. Compressive strength: ____ PSI highest
a. 10-14,000
b. 12-17,001
c. 12-17,000
C
ZINC PHOSPATE CEMENT
T or F. Not used anymore because this is the least irritating of all intermediary bases
F
T/ F
ZINC PHOSPATE CEMENT
. Is also used as base & a luting cement
T
T/ F
ZINC PHOSPATE CEMENT
Little acidic
T
T/ F
ZINC PHOSPATE CEMENT
Somehow acidized by the dentin
F
a.)POLYCARBOXYLATE CEMENT
b.)VARNISHES
__Powder-liquid form
__Is an organic copal or resin gum suspended in solutions of ether & chloroform
__2 coats must be placed, thickness of 2 to 5 microns
__ Use to the line the cavity for amalgam in order to improve the marginal & cavity wall seal
__Powder: Zinc Oxide plus magnesium oxide plus alumina
__It take 24 hours of corrosion products to form
a__Powder-liquid form
b__Is an organic copal or resin gum suspended in solutions of ether & chloroform
b__2 coats must be placed, thickness of 2 to 5 microns
b__ Use to the line the cavity for amalgam in order to improve the marginal & cavity wall seal
a__Powder: Zinc Oxide plus magnesium oxide plus alumina
b__It take 24 hours of corrosion products to form
a.)POLYCARBOXYLATE CEMENT
b.)VARNISHES
__While waiting, put varnish improve the seal
__Under amalgam, this will somehow reduce most
operative sensitivity
__Liquid: 40-50% polyacrylic acid
__Retards ion migration into dentin resulting less tooth discoloration
__Very thin film
__Can reduce leakage around the margins & walls of the cavity
__Compressive strength: 7,000-9,000 PSI
b__While waiting, put varnish improve the seal
b__Under amalgam, this will somehow reduce most
operative sensitivity
a__Liquid: 40-50% polyacrylic acid
b__Retards ion migration into dentin resulting less tooth discoloration
b__Very thin film
b__Can reduce leakage around the margins & walls of the cavity
a__Compressive strength: 7,000-9,000 PSI
a.)POLYCARBOXYLATE CEMENT
b.)VARNISHES
__Prevents penetration of corrosive products of amalgam to dentin
__Same with ZOE, do not use this in composite restorations because it intertere with the setting reaction
__Able to provide effective thermal insulation in thickness of 1.5mm
__Don’t use it with GI restoration because it will prevent fluoride release
__Only compatible with amalgam
__Irritant to the pulp dentin organ
b__Prevents penetration of corrosive products of amalgam to dentin
b__Same with ZOE, do not use this in composite restorations because it intertere with the setting reaction
a__Able to provide effective thermal insulation in thickness of 1.5mm
b__Don’t use it with GI restoration because it will prevent fluoride release
b__Only compatible with amalgam
a__Irritant to the pulp dentin organ
applied to cavity walls when using Silicates, Silicophosphate, GIC and even composites.
F
Use: Only for cavity preparations to be filled with amalgam (regardless of the depth)
F
Varnish/ sealer should be applied on all walls or floors of the cavity
T
Bases/ Sub-bases/ Liners should be applied only on pulpal floor & Axial wall (in case of class II cavity)
F
Should be nothing on enamel walls
T
Never apply base/sub-base/liner on other walls & gingival floor (in case of class II cavity)
F
If you have ideal depth of 1.5 to 2mm, no need for liner
base
F
If it doesn’t reach the pulp yet, you can just use ZOE liner/base
T
it is very important to know when you are going to use the cavity bases & liners.
T
_It is very dependent on depth of the tooth prep
F
Are water-based cements known as glass-polyalkenoate cements
-zoe cement
-hydrosilica cement
-glass ionomer cement
-poly carboxylate cement
glass ionomer cement
T/F
GLASS IONOMER CEMENTS
Consists of:
Aluminosilicate and fluoride interacted with a poly
F
gi cement is a:
-alkenoic acid
-alkaline acid
-flouride acid
alkenoic acid
24% of the cement is
-water
-flouride
-aluminum
-gutta percha
water
GLASS IONOMER CEMENTS
it may be loosely bound water which may be remove by dehydration when cemented exposed to air. Or tightly bound water that is not removed when exposed to air.
-first true
-second true
-both true
-both false
both true
t or f
If you are going to use GIC as final restoration, you need
to put a protective covering on glass ionomer filling while its setting so it will not loose or absorb water
T
a.)Silica:
b.)Alumina:
c.)Ca Fluoride:
d.)Al Fluoride:
e.)Sodium Fluoride:
f.)Al Phosphate:
g.)Grain size:
__3.0
__9.9
__13-19 microns
__29.0
__16.6
__34.3
__73
a.)Silica: 29.0
b.)Alumina: 16.6
c.)Ca Fluoride: 34.3
d.)Al Fluoride: 73
e.)Sodium Fluoride: 3.0
f.)Al Phosphate: 9.9
g.)Grain size: 13-19 microns
Liquid , except:
-h20
-Polyacrylic
-Itatonic
-Tartaric > 5% by weight
h20
Use glass ionomer as a luting cement
A.)TYPE I
B.)TYPE II
C.)Type 2.1
D.)Type 2.2
E.)TYPE III
A
These are glass ionomer used as restorative cements classified to 2
A.)TYPE I
B.)TYPE II
C.)Type 2.1
D.)Type 2.2
E.)TYPE III
B
Wherein you have restorative aesthetic glass lonomer
A.)TYPE I
B.)TYPE II
C.)Type 2.1
D.)Type 2.2
E.)TYPE III
C
It comes in shades as well
A.)TYPE I
B.)TYPE II
C.)Type 2.1
D.)Type 2.2
E.)TYPE III
C
Restorative reinforced
A.)TYPE I
B.)TYPE II
C.)Type 2.1
D.)Type 2.2
E.)TYPE III
D
Used as a lining or base cements
A.)TYPE I
B.)TYPE II
C.)Type 2.1
D.)Type 2.2
E.)TYPE III
E
Glass ionomer can be used as a liner or base based on the consistency
A.)TYPE I
B.)TYPE II
C.)Type 2.1
D.)Type 2.2
E.)TYPE III
E
Usually one part of powder. two parts of liquid then mix it well and put it in the crown that you are going to cement
A.)TYPE I
B.)TYPE II
C.)Type 2.1
D.)Type 2.2
E.)TYPE III
A
Auto-cured/self-cured
A.)TYPE I
B.)TYPE II
C.)Type 2.1
D.)Type 2.2
E.)TYPE III
C
Dual-cured- wherein you cure first then continue setting via the chemical reaction
A.)TYPE I
B.)TYPE II
C.)Type 2.1
D.)Type 2.2
E.)TYPE III
C
If you want to use it as a liner- thinner consistency
A.)TYPE I
B.)TYPE II
C.)Type 2.1
D.)Type 2.2
E.)TYPE III
E
_If you want to use it as a base- thicker consistency
A.)TYPE I
B.)TYPE II
C.)Type 2.1
D.)Type 2.2
E.)TYPE III
E
_If you want to use it as a base- thicker consistency
A.)TYPE I
B.)TYPE II
C.)Type 2.1
D.)Type 2.2
E.)TYPE III
A
Stronger than the regular composites
A.)TYPE I
B.)TYPE II
C.)Type 2.1
D.)Type 2.2
E.)TYPE III
D
More for posterior teeth
A.)TYPE I
B.)TYPE II
C.)Type 2.1
D.)Type 2.2
E.)TYPE III
D
Sets initially via light activated reaction & the acid-based reaction would continue overtime.
a.)Auto Cure
b.)Dual Cure
B
Setting time: 3-5 minutes
a.)Auto Cure
b.)Dual Cure
A
Mixing time: 40 seconds
a.)Auto Cure
b.)Dual Cure
A
It usually takes 24 hours for the final setting to be achieved.
a.)Auto Cure
b.)Dual Cure
B
So you have to work fast and put the material to the tooth
a.)Auto Cure
b.)Dual Cure
A
Are materials consisting of ion cross linked polymer materials surrounding glass reinforce filling particles.
-zoe cement
-hydrosilica cement
-glass ionomer cement
-poly carboxylate cement
glass ionomer cement
GIC
INDICATIONS(t or f)
__Persons with low caries index
F
GIC
INDICATIONS(t or f)
Because GIC will release fluoride and there are
benefits of fluoride.
T
GIC
INDICATIONS(t or f)
Areas subjected to short temperature changes
F
GIC
INDICATIONS(t or f)
Root surface caries in class I locations
F
GIC
INDICATIONS(t or f)
Slot-like prep in either Class I or Class III cervical locations
T
GIC
INDICATIONS(t or f)
Areas of abrasion, erosion w/o cavity prep - eroded
areas in cervican
T
GIC
INDICATIONS(t or f)
use this for class I
F
GIC
INDICATIONS(t or f)
But what is usually recommended is the lightcured Gl cement
T
T OR F
1)GIC bonds well to both enamel and dentin thus place GI to enamel area
F
T OR F
GIC is only recommended for use in deciduous teeth, including Class III lingual approach
T
T OR F
)If the final resto is a crown, substitute all lost caries using composite. However at present, we are using GI as a core build-up because it is stronger than composite
F
T OR F
GIC is superior to composite and amalgam
T
T OR F
Use GIC in high stress areas.
F
Write A if TRUE, and B if false
I.Indications for GIC
__ Pit and fissure sealant
__ Class Ill lingual approach, permanent teeth
__ Repairs of defective marginal restorations
__ Permanent teeth
__ deciduous teeth
__ Any minimal cavity preparation
__Core build-up
__Temporary restoration
__Sealing of crown surfaces
A - Pit and fissure sealant
B - Class Ill lingual approach, permanent teeth (DECIDUOUS TEETH)
A - Repairs of defective marginal restorations
B - Permanent teeth (FALSE)
A - deciduous teeth
A - Any minimal cavity preparation
A -Core build-up
A -Temporary restoration
B -Sealing of crown surfaces (ROOT SURFACES
GIC can be used on ___ the antagonist is a denture because the compressive strength is quite low
a. deciduous teeth
b. Permanent teeth
c. geriatic patients
d.none
c. geriatic patients
GIC is STRONGER than regular GIC
a. Luting
b. Liner
c. Resin Modified
C
T/F
GIC can be used as temporary restoration before crowns but may opt to just change it if it’s already painful or if a patient will request to have it changed.
T
Which of the ff are limitations for GIC?
a. Toughness
b. tensile strength
c. wear resistance
d.hardness
e.all
E
GIC sets in a relatively long time, approx?
a. 1-2 mins
b. 3-5 mins
c. 5-10 mins
B
Write A if TRUE, and B if false
II.Contraindications for GIC
__ Class III: because of stress (high stress area) on the incisal edges of anterior teeth during mastication
__ Class Il: stress bearing area
__ 3 loss of cusp area
__ small carious lesions especially when esthetics are involve
__ Glass ionomer cement translucent
__ Glass ionomer cement are opaque
B - Class III: because of stress (high stress area) on the incisal edges of anterior teeth during mastication (DAPAT CLASS IV)
A -Class Il: stress bearing area
A - 3 loss of cusp area
B - small carious lesions especially when esthetics are involve (LARGE CARIOUS LESIONS)
B - Glass ionomer cement translucent (OPAQUE)
A -Glass ionomer cement are opaque
Write A if TRUE, and B if false
III.Advantages for GIC
__Anti-cariogenic property __Adheres to the Calcium (Ca) of the tooth substance
__Biocompatible to the crown
__Unsatisfactory color matching
__Low carious attack on the tooth compared to other cements
__reports of microleakage or recurrent caries
A- Anti-cariogenic property A- Adheres to the Calcium (Ca) of the tooth substance
B -Biocompatible to the crown (PULP)
B -Unsatisfactory color matching (SATISFACTORY)
A- Low carious attack on the tooth compared to other cements
B -reports of microleakage or recurrent caries (NO REPORTS)
A- TRUE, B - FALSE
IV.Advantages for GIC
__Free alkyl ions of Gl has high potential for adhesion to the tooth __Translucency of Gl- acceptable esthetically (but if the need of esthetic is high, use composites)
__Releases fluoride and it bonds to the tooth
__Clinical handling is not demanding
__Long term stability in the oral environment
__Sometimes galvanic reaction __Placed in many appointments
__Often placed without need of local anesthesia
B -Free alkyl ions of Gl has high potential for adhesion to the tooth (CARBOXYL) A -Translucency of Gl- acceptable esthetically (but if the need of esthetic is high, use composites)
A -Releases fluoride and it bonds to the tooth
A -Clinical handling is not demanding
A -Long term stability in the oral environment
B -Sometimes galvanic reaction (NO GALVANIC) B -Placed in many appointments (ONE)
A-Often placed without need of local anesthesia
GIC has High initial solubility after mixing. Setting must take place in an area free from __ contamination
a. air
b. dirt
c. chemical
d.water
D
GIC has poor polishability due to the homogenous and porous structure of the material
a.true
b.false
B
A technique in applying GIC if you have a deep cavity prep and it is sandwiched between the tooth and the restoration
a. sandwhich technique
b.step-by-step technique
c.managbaby technique
d.none
A
Sandwhich technique proper sequence:
a. Dentin -> GIC -> Restorative Filling Materials
b.Dentin-> Restorative Filling Materials -> GIC
c.Dentin -> GIC -> Composite or Amalgam
d. two of the above
D
CLINICAL APPLICATION OF RESTORATOVE GIC a. Class III
b.Class V
c.Class I
d. Class V light / dual-cured
e.all
f.none
E
A- True, B - False
VI.Atraumatic Restorative Treatment (ART)
__For base, if deep cavity prep, make a thin base
__for class IIl use of GIC as a liner, you may do so.
__follow the manufacturer’s instructions
__Make the consistency a liner that is thicker than the base
B -For base, if deep cavity prep, make a thin base (THICK BASE)
A- for class IIl use of GIC as a liner, you may do so.
A- follow the manufacturer’s instructions
B -Make the consistency a liner that is thicker than the base (LINER MUST BE THINNER THAN THE THICK BASE)
SEQUENCING: Atraumatic Restorative Treatment (ART)
__fill it with GIC
__ Make a cavity prep using hand instrument
__update from the dentin is ok
__isolate the area
__fill it with GIC
__excavate up to hard/firm dentin
5 -fill it with GIC
1 - Make a cavity prep using hand instrument
3 -update from the dentin is ok
4 -isolate the area
2 -excavate up to hard/firm dentin
A- True, B - False
V.Clinical Application
__Permanent dentition
__Core buildup
__Non-Atraumatic Restorative Treatment (ART)
B -Permanent dentition (Primary)
A-Core buildup
B -Non-Atraumatic Restorative Treatment NART (atraumatic)
