Lecture 4

Question 1

process of attaching restorative materials via adhesion

Answer 1

Bonding

Question 2

bonding between dissimilar material

Answer 2

Adhesion

Question 3

bonding between similar materials

Answer 3

Cohesion

Question 4

bonding material

Answer 4

Adhesive

Question 5

surface that the adhesive is being bonded to

Answer 5

Adherend

Question 6

cutting away of tooth structure

Answer 6

Undercut

Question 7

 Seals area between tooth and restorations
 Seals dentinal tubules to prevent post-op sensitivity

Answer 7

reduction of microleakage

Question 8

What are the steps to the bonding process?

Answer 8

1. prepare tooth
2. etching of enamel/dentin
3. bonding agent/primer applied

Question 9

What is slurry?

Answer 9

Pumice and water

Question 10

What is the etchant?

Answer 10

phosphoric acid

Question 11

cannot see or feel roughness that is created

Answer 11

Micromechanical

Question 12

can see or feel roughness that is created

Answer 12

Macromechanical

Question 13

What are the factors to a prepared tooth for etching?

Answer 13

Clean surface
No adhesion
No fluoride/prophy paste

Question 14

increased wetting via high surface energy

Answer 14

Acid etch

Question 15

What contamination cannot happen after acid etching?

Answer 15

Saliva

Question 16

degradation of bonding agent from exposure to moisture

Answer 16

Hydrolysis

Question 17

repeated stresses

Answer 17

Fatigue failure

Question 18

What type of failure is with a bonding agent?

Answer 18

Cohesive failure

Question 19

What type of failure is at interface between bonding agent and tooth structure or restoration?

Answer 19

Adhesive failure

Question 20

connect to dentin and transmit messages

Answer 20

Enamel rods

Question 21

What are the steps to enamel etching/bonding?

Answer 21

1. clean tooth with pumice
2. 37% phosphoric acid applied - 20 seconds
3. rinse etchant for 10 seconds
4. dry tooth
5. apply bonding agent
6. low viscosity bonding
7. curing
8. restorative material bonded

Question 22

layer of cut loose debris by instrumentation

Answer 22

Smear layer

Question 23

How long is dentin etched for?

Answer 23

10-15 seconds / half time of enamel

Question 24

What are the dentin etching fallacies?

Answer 24

Pulpal irritation
Composites irritated by pulp

Question 25

What do resin tags lock into for dentin bonding?

Answer 25

Dentinal tubules

Question 26

bonding adhesive and decalcified dentin

Answer 26

Hybrid layer

Question 27

Why is it important to not over dry dentin with dentin bonding?

Answer 27

Can damage dentin surface and weaken bond

Question 28

What is the most common varnish?

Answer 28

Sodium fluoride varnish

Question 29

-Reduces root sensitivity -Caries reduction by 40%

Answer 29

Sodium fluoride varnish

Question 30

What are the contents in sodium fluoride varnish?

Answer 30

5%NaF Carrier resin Solvent

Question 31

Holds fluoride to tooth surface longer

Answer 31

Carrier resin

Question 32

Dissolves fluoride to liquid to be administered

Answer 32

Solvent

Question 33

o 4-minute disposable trays o Becoming less common

Answer 33

Gels and foams

Question 34

o FDA approved 2014 o Effective, trauma-free, inexpensive

Answer 34

Silver diamine fluoride SDF

Question 35

What are the indications for the use of SDF?

Answer 35

Active caries Lack of access to care Inability to tolerate treatment Many lesions at once

Question 36

What are the contraindications of SDF?

Answer 36

Silver allergy Ulcerations Esthetics Pregnancy Stains areas of decay

Question 37

What pits & fissures would not be sealed?

Answer 37

Coalesced

Question 38

What is less viscous compared to composite?

Answer 38

Sealant

Question 39

What is the sealant application steps?

Answer 39

1. Clean surface with pumice 2. Acid etch 3. Rinse & dry 4. Check for chalky look 5. Apply sealant 6. Light cure 7. Evaluate

Question 40

What are some potential problems with sealants?

Answer 40

-Sealant comes off -Blocked contact -Holes/voids -Sealant too high -Leakage

Question 41

fluoride releasing but lower retention rate

Answer 41

Glass ionomer cements

Question 42

What are the patient considerations for sealants?

Answer 42

Age Hygiene Caries risk Diet Fluoride Tooth type