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FixedPros > E3: LUTING AGENTS! > Flashcards

E3: LUTING AGENTS! Flashcards

1
Q

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

A

POOR….Good

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2
Q

What are the 3 mechanisms of adhesion?

A

Mechanical, Physical, and Chemical

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3
Q

Whats the simplest type of adhesion?

A

Mechanical

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4
Q

Mechanical adhesion is _______ of surface irregularities.

A

interlocking

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5
Q

Physical adhesion occurs when two surfaces are in _____ proximity.

A

close

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6
Q

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

A

permanent

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7
Q

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

A

covalent or ionic

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8
Q

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

A

sharing of electrons

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9
Q

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

A

Coupling Agent

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10
Q

Whats and example of a coupling agent?

A

Silane

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11
Q

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

A

Primer

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12
Q

Whats an example of a PRIMER?

A

Rely-X Ceramic Primer

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13
Q

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

A

Luting agent

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14
Q

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.

A

Working Time

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15
Q

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

A

Mixing Time

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16
Q

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.

A

Setting Time

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17
Q

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

A

Provisional Cements

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18
Q

What are two classes of Provisional cement?

A

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

19
Q

What are 2 examples of zinc oxide based provisional cement?

A

Tempbond, Tempbond NE

20
Q

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

A

Tempbond clear, provilink

21
Q

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

A

base and catalyst….3-4mins

22
Q

Residual ________ may inhibit the polymerization of resin materials

A

eugenol

23
Q

Eugenol provides a “______” effect on the pulp

A

sedative

24
Q

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

A

OB-TUN-DENT

25
Q

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

A

vasaline

26
Q

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

A

water!

27
Q

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

A

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

28
Q

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

A

Zinc Phosphate…phosphoric acid

29
Q

Does Zinc Phosphate bond to the tooth?

A

NO, just fills the space

30
Q

Polycarboxylate Cement uses _______ acid as its acid matrix.

A

PolyAcrylic Acid

31
Q

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

A

molecular size

32
Q

Is polycarboxylate cement more or less soluble?

A

more soluble…a disadvantage

33
Q

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

A

polycarboxlate is harder to remove

34
Q

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

A

Polycarboxlate

35
Q

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

A

Glass Ionomer

36
Q

What is the film thickness of GI?

A

less than 25 microns

37
Q

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 ______

A

fluoride release, enamel and dentin, BACTERIA

38
Q

Wow resin modified GI can be much thinner:

A

3-25 microns

39
Q

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

A

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

40
Q

Resin cements MUST BE USED WITH a ______ system!!

A

BONDING

41
Q

Which cement is VERY TECHNIQUE SENSATIVE?

A

RESIN CEMENTS

42
Q

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

A

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

43
Q

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

A

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

44
Q

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

A

self cure (Panavia 21)

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