Dm Preventative Dental Materials

Front 1

APF gels contain 2% ____, 0.34% ______, 0.98% ______, and thickening, flavoring, and coloring to a(n) _____ solution.

Back 1

NaF
hydrogen fluoride
phosphoric acid
aqueous

Front 2

Fluoride concentration of APF is _________%.
(HINT: It is a range, not just a single number.)

Back 2

1.22 - 1.32%

Front 3

Neutral NaF has a pH adjusted to 6.8. Why?

Back 3

To avoid etching of restorative materials

Front 4

Varnishes are available that contain ____% NaF.

Back 4

5%

Front 5

A tray with APF gel in it should be left in the patient's mouth for how long?

Back 5

4 minutes

Front 6

How long should the patient wait before eating/drinking after a topical fluoride tx?

Back 6

At least 30 minutes

Front 7

Fluoride rinses are not recommended for children of what age?

Back 7

< 6 years of age

Front 8

With neutral NaF thixotropic gel, _____ decreases and _____ increases upon application of force.

Back 8

viscosity
flow

Front 9

Sealants are bonded to ____ after ___ _____ or ___ ______.

Back 9

Enamel
Acid etching
Air abrasion

Front 10

Air abrasion involves _____ particles flying through the air.

Back 10

Al2O3

Front 11

(Resin-based sealants/Glass ionomer sealants) are light activated.

Back 11

Resin-based sealants

Front 12

(Resin-based sealants/Glass ionomer sealants) release more fluoride.

Back 12

Glass ionomer sealants

Front 13

________ is a 1-component system.

Back 13

Resin-based sealants

Front 14

The photoinitiator molecule in resin-based sealants is _____ and the activator is a(n) _______.

Back 14

Camphoroquinone
organic amine

Front 15

Glass ionomer sealants provide a chemical retention to ___ in the tooth structure, but ____ and ____ are lower than those of resin-based sealants.

Back 15

Ca+
strength
retention rate

Front 16

Topical fluoride is best used in conjunction with what?

Back 16

A fluoride-containing mouth rinse

Front 17

Mouth rinses should supplement what and NOT substitute for it?

Back 17

Mechanical plaque removal

Front 18

Fluoride-containing rinses can contain antibacterial agents such as ___________ OR ____________.

Back 18

0.12% Chlorohexidine gluconate in alcohol or non-alcohol vehicles
OR
Phenol-based essential oils with methylsalicylate in alcohol

Front 19

What is an example of a phenol-based essential oils with methylsalicylate in alcohol solution?

Back 19

Listerine

Front 20

What is are examples of 0.12% cholorohexidine gluconate in alcohol or non-alcohol vehicles?

Back 20

Peridex or Periogard

Front 21

Resin-based sealants contain low viscosity ________ monomers such as _____ and ______.

Back 21

Dimethacrylate
bis-GMA (bisphenol A-glycidyl methacrylate)
UDMA (urethane dimethacrylate)

Front 22

Inorganic filler up to 50% by weight as well as 1% _____ is added to resin-based sealants for opacity and contrast from enamel

Back 22

TiO2

Front 23

The chemically-activated (cold-cured or self-cured sealants) is a __-component system with a ________ initiator and 5% _______ activator.

Back 23

2
Benzoyl peroxide
Tertiary amine

Front 24

A few of the properties of an ideal sealant are that they (do/do not) penetrate into pits and fissures, (do/do not) form an O2-inhibited layer, and (should/should not) be easy to manipulate.

Back 24

DO
DO NOT
SHOULD

Front 25

Sealants are retained in (enamel/dentin) by ________ retention in fissures and etched areas of enamel.

Back 25

ENAMEL
micromechanical

Front 26

Why are fissures difficult to fill?

Back 26

Because air or debris are trapped at the bottom of fissures

Front 27

How does acid-etching improve the retention of sealants?

Back 27

By cleaning area to be sealed,
improving wettability of enamel,
increasing surface area
improving penetration of sealant

Front 28

Chemically- activated sealants: (shorter/longer) working time, (shorter/longer) polymerization time, (less/more) expensive, and (do/do not) require mixing.

Back 28

SHORTER
LONGER
LESS
DO

Front 29

Light-activated sealants: (shorter/longer) working time, (shorter/longer) polymerization time, (do/do not) require mixing.

Back 29

LONGER
SHORTER
DO NOT

Front 30

How long is light-activated sealants polymerization time?

Back 30

20-30 secs

Front 31

What is unique about light-activated sealants?

Back 31

must be stored in dark containers and eyes should be protected with amber shield

Front 32

Dentin can be exposed a number of ways. What are a few examples of how dentin can be exposed?

Back 32

Improper toothbrushing
Root caries
Erosion of enamel and cementum by gastric acids and/or acidic foods
Abfraction lesions
Scaling and root planing procedures
Microleakage in restorations


***I personally feel if he asks a question about this it will a "all of the above" or "all of these are true, EXCEPT". I could be wrong though. ****

Front 33

Fluid movements that causes pain can be induced by:

Back 33

Heat or cold (typically cold foods/drinks, cold air)
Tactile stimuli
Osmotic stimuli (sugar solutions, sweets)
Evaporation of water from dentin by blast of air
Interfacial gap formation due to percoiation and bonding irregularities

****I personally feel if he asks a question about this it will a "all of the above" or "all of these are true, EXCEPT". I could be wrong though. ****

Front 34

Professional and over-the-counter (OTC) desensitizing agents that are applied to teeth to reduce or eliminate sensitivity work by:

Back 34

1) plugging (occluding) open dentinal tubules via a chemical or mechanical process
OR
2) desensitizing nerve endings

Front 35

What products mineralize the openings of dentinal tubules?

Back 35

Amorphous Calcium Phosphate

Front 36

What is an example of a nerve depolarizer?

Back 36

Potassium Nitrate

Front 37

What federal agency recommends that players of all contact sports use mouth protectors (AKA mouthguards)?

Back 37

The Centers for Disease Control and Prevention

Front 38

What are the three common types of mouth protectors?

Back 38

Stock
Mouth-formed
Custom-made

Front 39

Injuries mostly occur when?

Back 39

When a mouth protector is NOT worn

Front 40

A few examples of the common responses of teeth to trauma are:

Back 40

Pulpitis
Pulpal necrosis
Resorption
Pulp canal obliteration
Hemorrhage

Front 41

What are mouth protectors made of?

Back 41

Thermoplastic polymers

Front 42

Most custom-made protectors are fabricated from ________ sheets of varying _______ or from ______, _______, or ______.

Back 42

Polyethylene-poly (VINYL ACETATE) [EVA]
Thicknesses
Rubber latex
Polyurethane
Vinyl plastisol

Front 43

Put these mouth protector steps of fabrication in order:

A) form thermoplastic material on cast
B) pour cast in disinfected impression
C) finish mouth protector
D) impression of arch, usually maxillary

Back 43

D, B, A, C

Front 44

The goal of a mouth protector is to distribute forces over the entire dental arch because many injuries result from a blow that drives the ______ into the _______.

Back 44

Mandible
Maxilla

Front 45

When compared to vinyl plastisol, polyurethane has (lower/higher) initial strength and hardness, and (less/more) energy absorption, but also has (lower/higher) water sorption, and requires (lower/higher) processing temperature.

Back 45

HIGHER
MORE
HIGHER
HIGHER

Front 46

When compared to polyurethane, vinyl plastisol and latex have slightly lower values of _______, ______, and ______, but are more difficult to _______.

Back 46

Strength
Hardness
Energy
Process

Front 47

_____ is to be expected in all protector types.

Back 47

Staining

Front 48

Gagging, poor taste, irritation and speech impairment (are/are not) common in custom-made protectors.

Back 48

are NOT

Front 49

Breakdown of mouth protectors usually results from one of what three causes and what can be done to detect the breakdown?

Back 49

bite-through
tearing
general deterioration
Advise frequent evaluation of mouth protectors

Front 50

Pressure of heat (primarily during storage) of a mouth protector can lead to what?

Back 50

permanent deformation of the mouth protector

Front 51

Hygiene guidelines for mouth protectors include:

(do/do not) scrub the mouth protector with abrasive dentifrice

(do/do not) use alcohol solutions or denture cleansers to clean the mouth protector

(do/do not) clean mouth protector in a solution of soap and water

(do/do not) clean mouth protector with hot water

(do/do not) store the mouth protector in the rigid container provided and in a well heated, well pressurized area

Back 51

DO NOT
DO NOT
DO
DO NOT
DO NOT (should be stored away from heat and pressure)

Front 52

________ fluoride causes etching and staining in adjunct to a fluoride application

Back 52

Stannous

Front 53

_________ have less filler than resin composites.

Back 53

Resin-based sealants

Front 54

The photo initiator in light-activated sealants is ______.

Back 54

camphoroquinone

Front 55

The acid-base bond in glass ionomers is also referred to as a ______ bond.

Back 55

chelation

Front 56

________ sealants may have an oxygen inhibited layer and could also have air bubbles.

Back 56

Chemically-activated

Front 57

When compared with resin composites, sealants have a lower _______ resulting in a high ____________ and high ___________.

Back 57

viscosity
polymerization shrinkage
coefficient of thermal expansion

Front 58

Within desensitizing agents, what can precipitate onto the tooth and make a hydroxyapatite-like layer to occlude dentinal tubules?

Back 58

ACP (amorphous calcium phosphate)