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Wilkins > Chapter 44 > Flashcards

Chapter 44 Flashcards

1
Q

True or False

Bacteremia can be created during polishing

A

True

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2
Q

True or False

Rotation of the rubber cup can force microorganisms into the tissue

A

True

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3
Q

True or False

Aerosoles are created during the use of rotary instruments

A

True (polishing paste, air and water sprays)

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4
Q

True or False

Polishing demineralized white spots of enamel is contraindicated

A

True - surface enamel is lost from abrasive polishing over demineralized spots

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5
Q

True or False

Thin enamel is contraindicated for polishing

A

True -such as emilogenesis

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6
Q

True or False

Smear layer can be removed when polishing

A

True - dental tubules become exposed

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7
Q

True or False

Use of course abrasives may create irregular scratches that will retain stain and biofilm more readily

A

True

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8
Q

Polishing pastes are not intended for use on restorative materials

A

True - can destroy the surface integrity of dental material

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9
Q

What are the rules for the use of cleaning or polishing agents?

A

light pressure, slow speed of the rubber cup, use a moist agent (never apply dry powders)

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10
Q

True or False

It is known that pellicle returns to cover the teeth within minutes of complete polishing

A

True

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11
Q

True or False

Biofilm begins to collect on pellicle within 1-2 hours, increasing in thickness by 12-24 hours

A

True - by 12-24 hours biofilm is thick enough to show clearly when disclosing agent is applied

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12
Q

True or False

Polishing is not recommended immediately following deep sub gingival scaling and root cleaning

A

True - abrasive particles can become embedded in the pocket wall and interfere with healing

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13
Q

True or False

Polishing on a patient with communicable disease is not recommended

A

True - it can be potentially disseminated by aerosols

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14
Q

True or False

Polishing is not recommended on soft spongy tissue that bleeds on brushing or gentle instrumentation

A

True

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15
Q

What are some of the abrasive agents in polishing paste?

A

picture

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16
Q

What is pumice made of?

A

complex silicates of aluminum, potassium, sodium of volcanic origin (volcanic ash)

17
Q

Definition of abrasion

A

wearing away of surface material by friction

18
Q

Definition of abrasive

A

a material composed of particles of sufficient hardness and sharpness to cut or scratch a softer material when drawn across its surface

19
Q

Definition of air-powder polisher

A

air-powered device using air and water pressure to deliver a controlled stream of specifically processed sodium bicarbonate slurry through the hand piece nozzle

20
Q

Definition of binder

A

substance used to hold abrasive particles together

21
Q

Definition of coronal polishing

A

polishing of the anatomic crowns of the teeth to remove dental biofilm and extrinsic stains

22
Q

Definition of glycerin

A

clear, colorless, syrupy fluid used as a vehicle and sweetening agent for drugs and as a solvent and vehicle for abrasive agents

23
Q

Definition of grit

A

particle size in reference to abrasive agents

24
Q

Definition of polishing

A

production, of a smooth, glossy, mirror-like surface that reflects light

25
Q

Definition of psi

A

parts per square inch

26
Q

Definition of rpm

A

revolutions per minute

27
Q

Definition of slurry

A

thin, semi-fluid suspension of a solid in a liquid

28
Q

Definition of three-body abrasive

A

which loose abrasive particles move in the interface space between the surface being polished and the polishing application device

29
Q

Definition of two-body abrasion

A

two-body abrasive polishing involves abrasive particles attached to a medium that move directly against the surface being polished

30
Q

Definition of tribiology

A

study and application of the principles of friction, lubrication, and wear as they apply to polishing

Wilkins (15 decks)

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