E3: LUTING AGENTS!

Question 1

Solid + Solid = _____ Adhesion, Liquid + Solid = ______ Adhesion

Answer 1

POOR….Good

Question 2

What are the 3 mechanisms of adhesion?

Answer 2

Mechanical, Physical, and Chemical

Question 3

Whats the simplest type of adhesion?

Answer 3

Mechanical

Question 4

Mechanical adhesion is _______ of surface irregularities.

Answer 4

interlocking

Question 5

Physical adhesion occurs when two surfaces are in _____ proximity.

Answer 5

close

Question 6

Physical adhesion is from dipole-dipole forces and is rapid, reversible, and not suitable for ________ bond

Answer 6

permanent

Question 7

Chemical adhesion: Molecules dissociate after adsorption onto the surface and constituent components then bond themselves separately by _____ or _____ forces

Answer 7

covalent or ionic

Question 8

Chemical Adhesion: _________ between the two atoms in the chemical bond distinguishes it from PHYSICAL adhesion

Answer 8

sharing of electrons

Question 9

An intermediary substance that is able to bond to BOTH materials involved:

Answer 9

Coupling Agent

Question 10

Whats and example of a coupling agent?

Answer 10

Silane

Question 11

________: Modifies the characteristics of the surface of one of the two materials involved so a bond can be created

Answer 11

Primer

Question 12

Whats an example of a PRIMER?

Answer 12

Rely-X Ceramic Primer

Question 13

A material that fills the gap between the tooth and the indirect restoration and holds them together:

Answer 13

Luting agent

Question 14

The period of time, measured from the START of MIXING, during which it is possible to manipulate a dental material without an adverse effect on its properties.

Answer 14

Working Time

Question 15

That part of the WORKING time specified or required in order to obtain a satisfactory MIX of the components of the dental material.

Answer 15

Mixing Time

Question 16

The period of time, measured from the START of MIXING until the cement has SET, according to criteria and conditions prescribed for each particular material.

Answer 16

Setting Time

Question 17

________: Used for the period of time between the preparation and seating the definitive
restoration – to seal, preventing marginal leakage → preventing pulpal irritation

Answer 17

Provisional Cements

Question 18

What are two classes of Provisional cement?

Answer 18

1.Zinc Oxide Based, self cure 2.Resin based, dual cure

Question 19

What are 2 examples of zinc oxide based provisional cement?

Answer 19

Tempbond, Tempbond NE

Question 20

What are 2 examples of Resin based, dual cure provisional cement?

Answer 20

Tempbond clear, provilink

Question 21

Tempbond/Tempond NE: Paste\Paste: _____ and _____…Setting time _______

Answer 21

base and catalyst….3-4mins

Question 22

Residual ________ may inhibit the polymerization of resin materials

Answer 22

eugenol

Question 23

Eugenol provides a “______” effect on the pulp

Answer 23

sedative

Question 24

________-an agent that has the property to diminish the perception of pain and/or touch

Answer 24

OB-TUN-DENT

Question 25

What do you use on the outside of the provisional for easy cleanup after cementing?

Answer 25

vasaline

Question 26

What can you use to accelerate temp bond (provisional cement)?

Answer 26

water!

Question 27

What are the 4 Matrix types of PERMANENT cements? Which matrix is NOT an acid/base reaction?

Answer 27

1.Phosphate 2.Phenolate 3.Polyacrylate 4. Resin**only one NOT an acid/base reaction

Question 28

Whats the OLDest cement being used? What is the acid matrix?

Answer 28

Zinc Phosphate...phosphoric acid

Question 29

Does Zinc Phosphate bond to the tooth?

Answer 29

NO, just fills the space

Question 30

Polycarboxylate Cement uses _______ acid as its acid matrix.

Answer 30

PolyAcrylic Acid

Question 31

Advantave of Polyacrylic Acid: Large ______ of polyacrylic acid, can’t penetrate dentin tubules

Answer 31

molecular size

Question 32

Is polycarboxylate cement more or less soluble?

Answer 32

more soluble...a disadvantage

Question 33

Whats more difficult to remove, polycarboxylate cement or zinc phosphate?

Answer 33

polycarboxlate is harder to remove

Question 34

What material is not recommended as a permanent luting agent, but is a good provisional cement?

Answer 34

Polycarboxlate

Question 35

What material: Essential tooth is isolated and undisturbed for the entire setting time, sensitive early moisture contamination (5+ minutes)

Answer 35

Glass Ionomer

Question 36

What is the film thickness of GI?

Answer 36

less than 25 microns

Question 37

Advantages of GI: Wide range of desirable properties including: strength, ______ release, low solubility, translucency, radiopacity, low film thickness, good seating, and substantially decrease micro leakage: Adheres to _____ and _____...Has an inhibitory effect on growth and adherence cariogenic oral ______

Answer 37

fluoride release, enamel and dentin, BACTERIA

Question 38

Wow resin modified GI can be much thinner:

Answer 38

3-25 microns

Question 39

What are the three RESIN CEMENTS we discussed and what type of cure is used for each??

Answer 39

1.Nexus-Dual cure 2.Rely X-VC: light cure 3.Panavia 21-self cure

Question 40

Resin cements MUST BE USED WITH a ______ system!!

Answer 40

BONDING

Question 41

Which cement is VERY TECHNIQUE SENSATIVE?

Answer 41

RESIN CEMENTS

Question 42

Which cure type of Resin cement has the thinnest application? The other two are basically the same at:

Answer 42

Light cure-thinnest 5-22 microns....dual and self 15-50 microns

Question 43

With LIGHT CURE resin cements you must use a _____ FREE restoration/splint.

Answer 43

METAL (can't get light under that shit!)

Question 44

Which cure type of Resin cement can you use with metal restorations?

Answer 44

self cure (Panavia 21)