RDAEF2 (CALIFORNIA) EXAM QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS
Pulpal floor depth
at least 1.5 mm ( resistance form )
How are Class 2 amalgam preps different on primary vs permanent teeth ?
than Primary teeth have less occlusal anatomy than permanent. Pulpal depth is more
Conservative on Primary Pulpal depth is more Conservative on Primary ( less than 1.5
mm )
What are the measurements of all aspects of an ideal Class 11 amalgam prep ?
90 ° exit angles . At least Imm gingival floor width . If enamel width = 0.0mm then you
must go 1.0mm into dentin to satisfy the Imm gingival width rule.
Enamel Dentin
2.0mm. .05mm
1.0mm. 0.5mm
0.2mm. 0.8mm
0.5mm. 0.5mm
Line angles class II
axiogingival, axolingual, axiofacial, axio puipal, buccopuipal, linguopulpal,
buccogingival, linguogingival, distopulpal, or mesialpulpal.
Point angles Class II
,axiobuccapulpal , axiobuccogingival , axiolinguopulpal , axiolinguogingival ,
mesiobuccapulpal , mesiolinguopulpal , distobuccopulpal, distolingnopulpal
Describe sequence for repairing a sub-surface void in a Composite
Drill out with bur, acid, etch, bond, composite, and cure.
What is proximal clearance & why is this so important for the longevity of class II
amalgam?
Ideally proximal clearance should be 0.5mm. Amalgams must break contact to verify
margins are smooth & there is a good seal or restoration
Which line angle in a Class II amalgam prep is beveled ?
ахiopulpal
Walls in Class II amalgam
AMIBLGP & ADOFLGP
axial, pulpal, lingual, facial, gingival, buccoproximal, linguoproximal (distal or mesial
depending on prep orientation)
In what line angles are retention groove found in Class II amalgam?
axiolingual / axiobuccal
Which matrix system is indicated for restoring Class II Composites ?
Sectional matrix - Ring system . (Bi-tine , TrioDent, V-Ring , etc ) & wedge .
Band width
0.0015 "= 37.9 microns .
0.0010 "= 25.4 microns
0.0020 "= 50.8 microns
,Compsite (Gamson)0.0013=32microns
*Matrix bands should be Imm above the marginal ridge.
How is a class II composite Prep different from a class II amalgam prep ?
Comp prep are more conservative then amalg .
Comp have round internal line angles .
Comp use micromechanical retention .
Amalgams have sharp internal line angle.
Amalgams have macromechanical retention.
What type of matrix is used in restoring Class III Composite?
Mylar / wedge
Open sandwich
When a glass ionomer is used under a large composite filling when the restoration
margins are below enamel or on root stucture.
Closed Sandwich
When a glass ionomer is used under a large composite fillings when the restoration
margins are on enamel
Name the four walls in a typical Class III Composite which has been prepared
from lingual approach
Facial
Gingival
Axial
Incisal
, Deep-axial
extended-gingival
Isthmus width
Imm
What amalgam type should you use on large amalgam & why?
You should use a slow set amalgam so you have enough working time
The axiopulpal line angle On class II amalgam preps must possess what feature &
why is it important?
Axiopulpal line angle must be beveled to reduce stress in an amgalgam (resistance
form)
How are large class IV preps made more retentive for composite?
•Full thickness bevel
•Starburst bevel esthetics
•Increase surface area
•Greater retention
What is the best way to prevent problems with composite flash & the need for
excessive finishing & polishing?
Control excess material in the first place.
What special steps should be taken to restore a large amalgam?
You should do a preoperative assessment so you can perform a successful final
outcome (visualized the anatomy)
What matrix type is used to restore а class III amalgam?
COMPLETE SOLUTIONS
Pulpal floor depth
at least 1.5 mm ( resistance form )
How are Class 2 amalgam preps different on primary vs permanent teeth ?
than Primary teeth have less occlusal anatomy than permanent. Pulpal depth is more
Conservative on Primary Pulpal depth is more Conservative on Primary ( less than 1.5
mm )
What are the measurements of all aspects of an ideal Class 11 amalgam prep ?
90 ° exit angles . At least Imm gingival floor width . If enamel width = 0.0mm then you
must go 1.0mm into dentin to satisfy the Imm gingival width rule.
Enamel Dentin
2.0mm. .05mm
1.0mm. 0.5mm
0.2mm. 0.8mm
0.5mm. 0.5mm
Line angles class II
axiogingival, axolingual, axiofacial, axio puipal, buccopuipal, linguopulpal,
buccogingival, linguogingival, distopulpal, or mesialpulpal.
Point angles Class II
,axiobuccapulpal , axiobuccogingival , axiolinguopulpal , axiolinguogingival ,
mesiobuccapulpal , mesiolinguopulpal , distobuccopulpal, distolingnopulpal
Describe sequence for repairing a sub-surface void in a Composite
Drill out with bur, acid, etch, bond, composite, and cure.
What is proximal clearance & why is this so important for the longevity of class II
amalgam?
Ideally proximal clearance should be 0.5mm. Amalgams must break contact to verify
margins are smooth & there is a good seal or restoration
Which line angle in a Class II amalgam prep is beveled ?
ахiopulpal
Walls in Class II amalgam
AMIBLGP & ADOFLGP
axial, pulpal, lingual, facial, gingival, buccoproximal, linguoproximal (distal or mesial
depending on prep orientation)
In what line angles are retention groove found in Class II amalgam?
axiolingual / axiobuccal
Which matrix system is indicated for restoring Class II Composites ?
Sectional matrix - Ring system . (Bi-tine , TrioDent, V-Ring , etc ) & wedge .
Band width
0.0015 "= 37.9 microns .
0.0010 "= 25.4 microns
0.0020 "= 50.8 microns
,Compsite (Gamson)0.0013=32microns
*Matrix bands should be Imm above the marginal ridge.
How is a class II composite Prep different from a class II amalgam prep ?
Comp prep are more conservative then amalg .
Comp have round internal line angles .
Comp use micromechanical retention .
Amalgams have sharp internal line angle.
Amalgams have macromechanical retention.
What type of matrix is used in restoring Class III Composite?
Mylar / wedge
Open sandwich
When a glass ionomer is used under a large composite filling when the restoration
margins are below enamel or on root stucture.
Closed Sandwich
When a glass ionomer is used under a large composite fillings when the restoration
margins are on enamel
Name the four walls in a typical Class III Composite which has been prepared
from lingual approach
Facial
Gingival
Axial
Incisal
, Deep-axial
extended-gingival
Isthmus width
Imm
What amalgam type should you use on large amalgam & why?
You should use a slow set amalgam so you have enough working time
The axiopulpal line angle On class II amalgam preps must possess what feature &
why is it important?
Axiopulpal line angle must be beveled to reduce stress in an amgalgam (resistance
form)
How are large class IV preps made more retentive for composite?
•Full thickness bevel
•Starburst bevel esthetics
•Increase surface area
•Greater retention
What is the best way to prevent problems with composite flash & the need for
excessive finishing & polishing?
Control excess material in the first place.
What special steps should be taken to restore a large amalgam?
You should do a preoperative assessment so you can perform a successful final
outcome (visualized the anatomy)
What matrix type is used to restore а class III amalgam?
