Clinical

1.

1 point

While amalgam has minimal occlusal thickness of 1.5, minimal comp thickness depends on occlusion

True

False

2.

1 point

When prepping a class II amalgam on a maxillary first premolar, if the caries only includes the mesial fissure

The proximal extension should only include the fissure

The proximal extension should include the contact

3.

1 point

A saucer shape is recommended for class III comp restorations because

It is not recommended because there is inadequate retention

It is more conservative than a rectangular shape

False. A rectangular shape is recommended

4.

1 point

Sectional matrixes are preffered for class II comp because

The rigshpld the wedge

The rings provide additional tooth separation

They are easier to place

5.

1 point

Occlusal walls in a class II comp prep may be convergent or parallel

True

False

6.

1 point

When restoring a class IV traumatic lesion, the prep form follows the samr requirements as a class III comp prep

True the requirements are the same

False only a bevel is required

7.

1 point

When beveling a class IV comp prep

Only bevel the facial enamel, prep the lingual to 90 degrees

Place a 1mm wide bevel on all enamel margins

Place a bevel on all enamel margins with a wider bevel in the incisal portion

8.

1 point

Unsupported facial enamel may be left when prepping a class III comp because

Unprepped enamel is more esthetic than restorative material

It will be bonded to the comp for support

Unsupported enamel may not be left

More than one above

9.

1 point

The tooth should be etched prior to placement of sealant material

True

False

10.

1 point

In restoring a class IV carious lesion, the prep form follows the same requirements as a class III comp prep

True, the requirements are the same

False, additional mechanical retention is required

11.

1 point

All internal and external angles within the tooth prep are

90 degrees

Slightly rounded

12.

1 point

Increased dimension of a proximal box in an extensive class II amagam

Requires the use of retention grooves, pins, or slots

Does not require additional secondary retention because of the complex outline form

Requires secondary retention to prevent dislodgement of the amagam

A and B

A and C

13.

1 point

Generally the matrix is applied before the adhesive placement

True

False

14.

1 point

When prepping a class II amalgam, should caries remain in the enamel when the gingival wall has been prepped to rest in sound dentin

You should extend the entire gingival wall gingivally to include the defect

You should extend part of the gingival wall gingivally to include the defect

15.

1 point

Placing restorative material on both the facisland lingusl wall of the proximal box

Should be avoided to limit polymerization stress

Should be limited to increments of less than 2mm

Is recommended as you fill more occlusally

16.

1 point

Properly placed, a sealant should be placed to

Fill all pits and fissures and extend out onto occlusal table

Fully cover occlusal table

Overfill slightly the puts and fissures, but not extend onto occlusal table

17.

1 point

When prepping an extensive class II amalgam prep

Clearance of .5mmfrom the adjacent tooth should be maintained for strength of residual tooth structure

The proximal box may extend beyond a facial or lingual line angle

It may be necessary to tilt the bur resulting in increasing convergence

B and C

18.

1 point

Gingival clearance for a class II comp is provided

For ease of placement of restorative material

To insure all caries is removed

For ease of matrix placement

19.

1 point

When extending to include an occlusal fissure extending into the facial cusp ridge of a maxillary molar, the extension should be prepped to 1.5-2.0mm deep

To provide resistance and retention

To provide uniform pulpal depth

To provide adequate thickness of material

20.

1 point

Outline form of a class III comp is determined by

The location of the contact

The carious defect

The requirements for adequate resistance form

More than one above

21.

1 point

Studies show that sealants can be applied over small, cavitated lesions with no subsequent progression of caries. Sealants should be used for

Prevention

Tx of existing caries

Both A and B are true

22.

1 point

If polishing of an amalgam is required, it can be accomplished

24 hours after insertion

When the amalgam becomes hard

At the time of placement

23.

1 point

The amalgam should be carved

Just beyond the cavosurface

Just short of the cavosurface

To the cavosurface

24.

1 point

Amalgams should be polished

For all high copper amalgams

For those amalgams requiring further finishing and polishing after condensation and carving

For all amalgams

25.

1 point

The occlusal step of a class II comp

Is fat in the mesiodistal direction and rises and falls in the faciolingual direction

Rises and falls I the mesiodistal direction and is flat in the faciolingua Direction

Either is acceptable

26.

1 point

Successive cusp building technique allows curing increments for 5 second

False

True

27.

1 point

When packing a class II comp the first incriment should be placed

Obliquely along the gingival floor extending up the facial or lingual wall

On the gingival floor

On the proximal box wall

28.

1 point

When extending to include a fissure extending into the lingual surface of a maxillary molar

The fissure should be prepped to the expense of the mesiolingual cusp

The fissure should be prepped centrally over the groove

The fissure should be prepped to the expense of the distolingual cusp

29.

1 point

Primary relsistance principles include

Using a box shape with a relatively horizontal floor

Using bonding

Providing sufficient thickness of filling material

All of above

30.

1 point

Retentio in class II comp is obtained by bonding, so it is ot necessary to use mechanical retention features in tooth prep

True

False

31.

1 point

A class II comp prep should be extended to break contact gingivally, bucally, and lingually

True

False

32.

1 point

Polishing of an amalgam is completed

Once the amalgam is hardened and carved

Once the crystal structure is complete

At the end of the working time

33.

1 point

The junction of two enamel walls should be slightly rounded

False

True

34.

1 point

The gingival extention on a class II comp should be prepped

With a bevel

Should rise and fall faciolingually

At 90 degrees

35.

1 point

When a larger occlusal outline form is required

Groove extension is executed at the level of the pulpal floor

The pulpal floor should be maintained at the level of the DEJ

The pulpal floor should rise slightly as it extends up a cuspal incline

A and B

B and C

A, B and C

36.

1 point

The separating ring of a sectional matrix may be placed

Above the wedge

On the wedge

Between the proximal tooth and the wedge

All of the above

37.

1 point

Which statement is false regarding amalgam phases?

Sn7-8Hg is the gamma one phase

Ag3Sn is the gamma phase

Cu6Sn5 is the eta prime phase

38.

1 point

In establishing outline form, the pulpal floor should be prepped at an initial depth of

.2-.5mm pulpally of DEJ

2mm pulpally of DEJ

1.5mm pulpally of DEJ

39.

1 point

When prepping a class II amalgam prep of the max first molar exceeding through the oblique ridge is indicated

To increase the strength of the restoration

When seperatr occlusal portions are separated by less than .5mm of tooth structure

When the ridge is relatively flat

40.

1 point

When restoring a class IV lesion

The lingual should be beveled to 1mm

The linual should recieve a short bevel

The lingual may be chamfered if the margin is in the area of the occlusal contact

B and C

41.

1 point

To insure a proper gingivsl seat, the first increment of comp should be placed

On the facial or lingual wall

Obliquely on the gingival floor extending onto either facial or lingual wall

On the gingival floor

42.

1 point

When prepping an interproximal box only amalgam prep

The prep requires an additional secondary retention

The prep requires placement of retention grooves from the gingivoaxial point angle to the occlusal surface

Both A and B

43.

1 point

Bevels are recommended for class III comp preps because

Bevels are not recommended

The enamel bond is inadequate without them

They provide a gradual transition of the restorative material for esthetics

44.

1 point

A class V prep that extends onto root surface should have

Beveled margins

A retenton grooves in the incisal aspect and the gingival aspect

Beveled enamel margins and a retention groove in the gingival aspect

45.

1 point

The occlusal cavosurface on a class II comp should be

Can be either beveled or not for esthetics

90 degrees because the enamel already has exposed enamel rod ends for etching

Beveled to increase the surface area on enamel etched

46.

1 point

When prepping an extensive class II amalgam on a mandibular first molar

The distal cusp must be capped to avoid extention of the facial proximal box wall

The cavosurface of the facial wall of the distal box should be prepped to 90 degrees

Extension of the box to the facial will result in a cavosurface of more than 90 degrees

47.

1 point

In restoring a class II comp the first increment of material should be placed

Along the facial or lingual wall

Flat against the gingival floor

Along the gingival floor and should extend up the facial or lingual wall

48.

1 point

When a class III comp prep extends onto the root surface

The entire facial should be beveled

The enamel should be beveled

A retention groove should be placed on the gingival margin 1/2the depth oc the prep with a 1/4 round bur

More than one above

49.

1 point

A class V prep on root surface should be prepped to an axial depth of

1.5mm

1.0mm

.75mm

50.

1 point

Deep occlusal grooves

Give the amalgam a natural appearance

Should be carved to simulate the patients anatomy

Invite chipping or the restoration at the cavosurface