Lecture 16: Bonding to Enamel

Question 1

adhere atoms, ions, biomolecules to a surface

Answer 1

adsorption

Question 2

incorporation of molecules into the bulk of a material

Answer 2

absorption

Question 3

In bonding to enamel we want ad or absorption?

Answer 3

adsorption

Question 4

chemisorption and physical adsorption

Answer 4

2 types of adsorption:

Question 5

chem rxn takes place, not reversible, desired for adhesives

Answer 5

chemisorption

Question 6

van der walls, more reversible

Answer 6

physical adsorption

Question 7

enamel and dentin are hydro___

Answer 7

philic <3

but the materials we use to adhere are hydrophobic 3

Question 8

1. clean
2. good wetting
3. intimate adaptation
4. bonding
5. good curing

Answer 8

5 steps of forming good adhesion

Question 9

1. operator
2. prep design
3. materials
4. intraoral location of tooth
5. patient

Answer 9

5 factors for bonding

Question 10

desiccated state increases free energy

Answer 10

drying

Question 11

enamel (unetched) 29

Answer 11

enamel (etched) 51

Question 12

etch and rinse (total etch)

self etch

Answer 12

two etch techniques

Question 13

etch and rinse requires wash/rinse, dry

Answer 13

true

Question 14

self etch does not require drying

Answer 14

true