Class III, IV, and V Composite Restorations

Question 1

What are the steps in complete composite resin restoration?

Answer 1

Acid Etch
Prime
Bond/Adhesive
Place Composite

Question 2

______ increases surface area; penetrates etched enamel creating micromechanical bond

Answer 2

Acid etch

Question 3

If the tooth gets contaminated with saliva _________ and then rinse again and dry until frosted enamel appearance is present.

Answer 3

re-etch for 10 seconds

Question 4

Teeth rich in fluoride require _____ etching times because fluoridated teeth are more resistant to acid

Answer 4

longer

Question 5

◦Hydrophilic monomers in solvent
◦Draws adhesive in
◦This step is included with adhesive in our clinic

Answer 5

Primer

Question 6

Resin bonding agent

Answer 6

Bond

Question 7

The thin bonding agent engages the etched enamel through a _______ bond

Answer 7

micro-mechanical bond.

Question 8

The self-curing or light-cured resin then ______bonds to the bonding agent

Answer 8

chemically

Question 9

Primer/adhesive penetrate the intertubular dentin forming ______-

Answer 9

hybrid layer

Question 10

What are created when the composite pulls back on the instrument?

Answer 10

Voids

Question 11

Do opaque or translucent composites require longer curing time

Answer 11

Opaque

Question 12

Large class III restorations require _____ shades especially when the preparation can be seen through from the facial to the lingual.

Answer 12

opaque shades

Question 13

Light will pass through ______ shades in large restorations thus making the restoration stand out in a patients mouth

Answer 13

translucent

Question 14

T/F: Etching and bonding is required between layers of resin

Answer 14

False

Question 15

T/F: HOWEVER, if the surface gets contaminated between layers RE-ETCH the contaminated composite surface

Answer 15

True

Question 16

After placement of composite restoration, an Oxygen-inhibited layer of resin will remain on the surface for a time
◦Additional composite can be added directly to this layer
◦No need to re-etch and bond

Answer 16

Oxygen inhibited layer

Question 17

When there are 2 preps next to each other, should you prep the larger or smaller prep?

Answer 17

Prep larger first

Question 18

When there are 2 preps next to each other, should you restore the larger or smaller prep?

Answer 18

Restore smaller first

Question 19

Should you etch multiple teeth or one at a time?

Answer 19

One at a time

Question 20

Incremental layering technique causes _____ polymerization stress

Answer 20

less

Question 21

What cement/line should not be used in anterior preps?

Answer 21

Eugenol/copalite

Question 22

SHould you use clear matrix on class 2 composite restorations/

Answer 22

No; lots of flash

Question 23

________ is used to contour class 3 restorations on the final layer

Answer 23

Mylar strip

Question 24

When there is excess composite on a class3 restoration, where should the excess be removed from?

Answer 24

incisal portion of prep

Question 25

How many blades do the carbide finishing burs have?

Answer 25

12

Question 26

________ Compresses the material with a matrix into the Class V preparation while giving a great contour

Answer 26

Cure-Thru Matrix

Question 27

On a class V restoration, should you finish on cementum?

Answer 27

No

Question 28

____ or ____ fill composite should be used on class V restorations: ◦lower modulus of elasticity (less stiff) than hybrids ◦won't flex as readily ◦less likely to debond

Answer 28

Nanofill or microfill