Class II Composite Restoration

Question 1

large filler particles, no longer used much

Answer 1

macrofill

Question 2

use in anterior areas on the facial, gives superior polish but is not as strong as hybrids

Answer 2

microfill

Question 3

filled with nanoparticles (Filtek Supreme –use in the clinic)

Answer 3

nano fill

Question 4

midi and microfillers

Answer 4

Hybrid

Question 5

______ has more shrinkage (is lower filled) and less stress (has more resin to relieve the stress as it cures)

Answer 5

Flowable

Question 6

_____ has less shrinkage (is higher filled) but has more stress

Answer 6

Hybrid

Question 7

◦ Place etch on enamel first, followed by dentin
◦ ETCH ENAMEL 20-30 SECONDS
◦ ETCH DENTIN 15-20 SECONDS
◦ Rinse and gently air dry

Answer 7

Complete Etch

Question 8

◦ Etch enamel only
◦ 20-30 seconds
◦ Rinse and air dry

Answer 8

Selective etch

Question 9

_______ the dentin results in in collapse of collagen layer (more on that later)and reduced bond strengths

Answer 9

Desiccating

Question 10

The sticky uncured layer left on the surface

Answer 10

Oxygen Inhibited Layer

Question 11

______ in air interferes with polymerization on surface of composite

Answer 11

Oxygen

Question 12

Finishing can remove the ___ ___ ____.

Answer 12

Oxygen Inhibited Layer

Question 13

Place the first layer of composite resin in the proximal box to a depth of about _ mm.

Answer 13

1mm

Question 14

_____ adding composite to the prep minimizes stresses placed on the material and on the tooth due to polymerization postoperative sensitivity. Build up in increments do not place the shrinkage. This may be a factor in postoperative sensitivity.

Answer 14

Incremental

Question 15

For the final cure,

Cure the restoration from the buccal __ sec Cure the restoration from the lingual __ sec

Answer 15

20 seconds both sides

Question 16

Ratio of bonded to unbonded surface

Answer 16

C Factor

Question 17

Is a low or high C Factor preferred?

Answer 17

low

stress can be relieved in the flow of the resin during the pre-gel state

Question 18

Class I the______ (highest C Factor- 5:1)), Veneers the_____ (Lowest C Factor- 1:1)

Answer 18

worst

best

Question 19

t/f: if adhesive bond strength < polymerization stress =debond may occur

Answer 19

true

Question 20

t/f: If adhesive bond strength > polymerization stress = cusp
deformation may occur, depending on flexibility of remaining
tooth structure. Related to post-op sensitivity.

Answer 20

true

Question 21

Remove caries
◦ DO NOT do complete prep
◦ Seal remaining fissures
◦ Appropriate for small carious lesions

more than sealant less than restoration

Answer 21

Preventative Resin Restoration

Question 22

t/f: In order to reduce post operative sensitivity.

Cover very deep dentin with liner
◦ CaOH or Glass Ionomer

Answer 22

true

Question 23

Are highly filled
◦ more translucent fillers (do not shrink)
◦ less resin matrix (shrinks) Higher filled= more stress because
◦ less resin to relieve the stress when it cures Flowable bulk fill may be indicated as first increment in proximal box

Answer 23

bulk fill composites

Question 24

_____ is a large monomer that limits the number of shrinkage zones, reducing the amount of shrinkage that occurs during polymerization.

Answer 24

AUDMA

aromatic urethane dimethacrylate

Question 25

What two monomers together allows a one-step placement of bulk fill up to 3-4 millimeters.

Answer 25

Addition fragmentation monomer (AFM) and aromatic urethane dimethacrylate (AUDMA)