DECKS Flashcards
All Class III lesions should be filled with composite resin, because they are
esthetically important.
a. Both the statement and the reason are correct and related
b. Both the statement and the reason are correct but not related
c. The statement is correct, but the reason is not
d. The statement is not correct, but the reason is correct
e. Neither the statement nor the reason is correct
e. Neither the statement nor the reason is correct
What is the ideal depth of an amalgam preparation and dentin remaining for adequate pulpal insulation?
a. 1.0mm into dentin, 2.0mm dentin remaining
b. 2.0 mm into dentin, 1.0 mm dentin remaining
c. 0.5 m into dentin, 2.0 mm dentin remaining
d. 2.0 mm into dentin, 0.5 mm dentin remaining
c. 0.5 m into dentin, 2.0 mm dentin remaining
A patient comes in claiming that their holistic doctor told him that he has an allergy to mercury and needs only white fillings. Your best response is:
a. There is no such thing as a mercury allergy; plus, there is no mercury in amalgam
fillings
b. You might have mercury allergy, but that is very rare; plus, there is no mercury in
amalgam fillings
c. There is no such thing as a mercury allergy; plus, with proper isolation and technique,
your exposure will be minimal
d. You might have a mercury allergy, but that is very rare; plus, with proper isolation and
technique, your exposure will be minimal
d. You might have a mercury allergy, but that is very rare; plus, with proper isolation and
technique, your exposure will be minimal
A patient presents to your office with interproximal caries involving #4 disto-occlusal. The decision is made to do a Class Il Inlay instead of a traditional amalgam restoration. The inlay preparation will include all of the following
features EXCEPT one. Which one is the EXCEPTION?
a. Sharp Internal line angles
b. Slightly divergent walls occlusally
c. Proximal retentive grooves
d. Reverse bevel at the axial gingival line angle
c. Proximal retentive grooves
You would prefer your assistant overtriturate the amalgam rather than undertriturate it.
This is because an undertriturated amalgam has less strength, faster corrosion, and a rougher finished surface.
a. Both statements are true
b. Both statements are false
c. The first statement is true, the second is false
d. The first statement is false, the second is true
a. Both statements are true
Class V amalgam restorations rarely require retentive grooves, but if they are
sed, they are placed at the incisoaxial and gingivoaxial lime angles.
a. Both statements are true
b. Both statements are false
c. The first statement is true, the second is false
d. The first statement is false, the second is true
d. The first statement is false, the second is true
Class V amalgam restorations rarely require retentive grooves. ❌
Class V amalgam restorations commonly require and utilize retention grooves.
Delayed expansion of amalgam restorations is associated with which two factors?
a. Insufficient trituration and condensation
b. High residual mercury
c. The contamination of the amalgam by moisture during trituration and condensation
d. The failure to use a cavity varnish
a. Insufficient trituration and condensation
c. The contamination of the amalgam by moisture during trituration and condensation
Proper condensation and carving makes an amalgam restoration stronger because it removes the mercury-rich gamma-two matrix.
a. Both the statement and the reason are correct and related
b. Both the statement and the reason are correct but not related
c. The statement is correct, but the reason is not
d. The statement is not correct, but the reason is correct
e. Neither the statement nor the r e a s o n is correct
a. Both the statement and the reason are correct and related
A high-copper amalgam is preferred over a lower-copper amalgam due to the undesirable clinical properties that present in which phase of the reaction?
a. Gamma
b. Gamma-one
c. Gamma-two
d. Gamma-three
c. Gamma-two
Which of the following properties would not be beneficial to the retention and
resistance of a Class Il amalgam preparation?
a. Occlusal dovetail
b. Convergent buccal and lingual walls
c. Retentive proximal grooves
d. Axio-Gingival line angle greater than 90 degrees
d. Axio-Gingival line angle greater than 90 degrees
Beveling the gingival cavosurface margin of the proximal box of a Class II amalgam preparation on a permanent tooth:
a. Should result in a long bevel
b. Is contraindicated because of the low edge strength of amalgam
c. Should remove unsupported enamel that may fracture
d. Is unnecessary since the tooth structure in this area is strong
c. Should remove unsupported enamel that may fracture
Which tooth requires special attention when preparing the occlusal aspect for a
restoration?
a. Mandibular first bicuspid
b. Mandibular second bicuspid
c. Maxillary first molar
d. Maxillary first bicuspid
a. Mandibular first bicuspid
All of the following correctly describe the ideal preparation for a Class one amalgam EXCEPT one. Which one is the EXCEPTION?
a. Convergent Buccal and Lingual walls
b. Pulpal floor extending 0.5mm into dentin
c. Divergent mesial and distal walls 1mm away from proximal surfaces
d. Rounded internal line angles
c. Divergent mesial and distal walls 1mm away from proximal surfaces
NOTES:
Mesial and distal walls should be at least 1.6 mm away from proximal surfaces on premolars and 2.0 mm away on molars to prevent marginal ridge fracture.
The matrix band should be removed after condensation of the amalgam but prior
to the final carving of the restoration. This is because the wedge compensates for
the thickness of the matrix band.
a. Both the statement and the reason are correct and related
b. Both the statement and the reason are correct but not related
c. The statement is correct, but the reason is not
d. The statement is not correct, but the reason is correct
• Neither the statement nor the reason is correct
b. Both the statement and the reason are correct but not related
The diagonal slot opening on the Tofflemire matrix retainer (also called the Universal matrix system) is always placed facing the gingiva. This:
a. Permits easy separation of the retainer from the band in an occlusal direction
b. Allows for better contour of band to tooth
c. Allows for easier wedge placement
d. Is less harmful on the gingiva
a. Permits easy separation of the retainer from the band in an occlusal direction
Which of the following are true statements regarding the polishing of amalgam? Select 3.
a. It reduces marginal discrepancy
b. It should be done about 10 minutes after placement
c. Occlusion should not be checked prior to polishing
d. It prevents tarnishing of the restoration
e. It improves the appearance of the restoration
f. It should be done with a dry polishing powder
a. It reduces marginal discrepancy
d. It prevents tarnishing of the restoration
e. It improves the appearance of the restoration
All of the following are true concerning a Class V amalgam preparation EXCEPT one. Which one is the EXCEPTION?
a. The outline form is determined primarily by the location of the free gingival margin
b. The mesial, distal, gingival, and incisal wals of the cavity preparation diverge outward
c. The retention form is provided by the gingival retention groove along the gingivo-
axial line angle and an incisal retention groove along the incisoaxial line angle
d. A cervical clamp is usually necessary to retract gingival tissues
a. The outline form is determined primarily by the location of the free gingival margin❌
The outline form is determined primarily by the location and size of the
cariou s lesion.
In regard to the selection and placement of amalgam restorations, all of the following are true EXCEPT one. Which one is the EXCEPTION?
a. High-copper amalgams are preferred over low-copper amalgams due to elimination of
the gamma two phase
b. Increased trituration time will increase compressive strength and decrease setting
pansion compared to decreased trituration time
c. Ideal mercury content should range between 55%-60%
d. Tensile strength is 1/5-1/8 the compressive strength of set amalgam
e. The smaller the particle size the less expansion
c. Ideal mercury content should range between 55%-60%
Amalgam restorations require an obtuse cavosurface margin because amalgam is a brittle material.
a. Both the statement and the reason are correct and related
b. Both the statement and the reason are correct but not related
c. The statement is correct, but the reason is not
d. The statement is not correct, but the reason is correct
e. Neither the statement nor the reason is correct
d. The statement is not correct, but the reason is correct
High copper amalgams reduce gamma-two formation and marginal breakdown
Unreacted Agn gamma phase is the strongest and prevalent in triturated amalgam.
a. Both statements are true
b. Both statements are false
c. The first statement is true, the second is false
d. The first statement is false, the second is true
a. Both statements are true
Which of the following statements are true regarding creep? Select 3.
a. Creep is a process that happens over time
b. Creep gradually increases the marginal integrity of an amalgam restoration
c. Undertrituration tends to increase the creep rate
d. Overtrituration tends to decrease the creep rate
e. Increasing the condensation pressure decreases the creep rate
a. Creep is a process that happens over time
c. Undertrituration tends to increase the creep rate
e. Increasing the condensation pressure decreases the creep rate
There is no free mercury in triturated amalgam because trituration causes the alloy to dissolve in the mercury.
a. Both the statement and the reason are correct and related
b. Both the statement and the reason are correct but not related
c. The statement is correct, but the reason is not
d. The statement is not correct, but the reason is correct
e. Neither the statement nor the reason is correct
c. The statement is correct, but the reason is not
There is no free mercury in triturated amalgam because trituration coats the alloy
particles with mercury.
Please rank the following in order of application thickness and consider which would be used to replace a large amount of dentin that has been destroyed.
a. Cement
b. Cavity Liner
c. Base
(b) Cavity Liner
(a) Cement
(c) Base
The following statements are true regarding glass ionomer cements EXCEPT
a. Release fluoride
b. Good chemical adhesion
c. Good thermal insulator
d. Thermal expansion similar to tooth
e. High solubility after initial setting
e. High solubility after initial setting
Glass ionomer cements generally contain fluoro-alumino-silica powder.
The fluoro-alumino-silica is the portion responsible for one of the major
advantages of glass ionomer.
a. Both statements are true
b. Both statements are false
c. The first statement is true, the second is false
d. The first statement is false, the second is true
a. Both statements are true
ZOE cements make good temporary sedative restorations because their pH is very basic.
a. Both the statement and the reason are correct and related
b. Both the statement and the reason are correct but not related
c. The statement is correct, but the reason is not
d. The statement is not correct, but the reason is correct
• Neither the statement nor the reason is correct
c. The statement is correct, but the reason is not
ZOE cements make good temporary sedative restorations because their pH is very basic.❌
ZOE cements make good temporary sedative restorations because the pH is NEUTRAL
and the eugenol has a palliative effect.
IRM (Intermediate Restorative Material) will interfere with subsequent placement of a resin filling. This is because IRM is a form of zinc oxide-eugenol.
a. Both the statement and the reason are correct and related
b. Both the statement and the reason are correct but not related
c. The statement is correct, but the reason is not
d. The statement is not correct, but the reason is correct
e. Neither the statement nor the reason is correct
a. Both the statement and the reason are correct and related
Zinc phosphate cement can cause irreversible pulpal damage because it shrinks
slightly on setting.
a. Both the statement and the reason are correct and related
b. Both the statement and the reason are correct but not related
c. The statement is correct, but the reason is not
d. The statement is not correct, but the reason is correct
e. Neither the statement nor the reason is correct
b. Both the statement and the reason are correct but not related
Zinc phosphate cements should be mixed on a cool glass slab, adding a small amount of powder to the liquid every 20 seconds. This is done to gain the following advantages EXCEPT
a. Stronger final set
b. Lower solubility
c. Greater viscosity
a. Stronger final set
b. Lower solubility
