MDA Ch 58 Coronal Polishing

What is a coronal polish?

A technique that is used to remove plaque and stains from the coronal surfaces of the tooth

What is the purpose of selective polishing?

To avoid unnecessary removal of even small amounts of surface enamel

What is the difference between a coronal polish and a oral prophylaxis?

coronal polish is strictly limited to the clinical crowns of the teeth. Oral prophylaxis is complete removal of calculus, debris, stain, and plaque from the teeth.

What is an extrinsic stain?

stains that appear on the exterior of the tooth and can be removed

What is an intrinsic stain?

stains that are caused by environmental source but cannot be removed because the stain has become incorporated into the structure of the tooth

What is the most common technique for stain removal?

rubber polishing cup

What type of grasp is used to hold the handpiece?

A pen grasp with the handle resting in the U- shaped area of the hand between the thumb and the index finger

What is the purpose of a fulcrum?

provides stability and allows movement of wrist and forearm

What precaution should be taken when esthetic-type restoration are polished?

Low abrasive pastes should be used

In which direction should the polishing stroke move?

overlapping strokes from the gingival third toward the incisal third

What damages can result from use of the prophy cup at high speed?

produce frictional heat and burn the gingiva

how should the patients head be positioned for access to maxillary and mandibular arch?

max: chin up
man: chin down

Supervised night guard bleaching
is effective on extrinsic stains.
is effective on intrinsic stains.
is recommended for non-vital teeth.
Both A and B are correct

a

Rubber cup polishing __________ recommended to remove intrinsic stains.
is
is not

b

Light stains on the tooth surface can be removed with which material?
Fine pumice
Superfine silex
Zirconium

b

The coronal polishing procedure is indicated
prior to a prophylaxis.
prior to dental dam placement.
to polish a demineralized area.
All of the above

b

The technique of polishing only those teeth with plaque or stain is called
airbrasive technique.
generalized polishing.
incomplete process.
selective polishing.

d

Coronal polishing is not recommended for a patient with tuberculosis because the
aerosol from the handpiece may spread the bacteria.
patient may have difficulty breathing.
procedure may cause bacteremia.
Both A and C are correct.

d

The prophy angle is held in a ____________ grasp.
palm
palm-thumb
pen

c

For coronal polishing, the recommended low-speed handpiece speed is __________ rpm.
10,000
20,000
100,000
2,000,000

b

Tetracycline is an example of an _________ stain.
extrinsic
intrinsic

b

A bristle brush should not be used on cementum or dentin because the surface is
easily stained by the abrasive.
sensitive to the abrasive.
soft and easily grooved.
Both A and C are correct

c

Plaque and stains are removed from the interproximal areas with
an abrasive.
dental floss.
a rubber cup.
an explorer.

b

To avoid injury to the gingival tissue, the rubber cup stroke should be directed
away from the gingival tissue.
parallel to the gingival tissue.
toward the gingival tissue

a

When moving the rubber polishing cup from one area to another, you should use what type of motion?
Patting
Sweeping
Wiping
Both A and C are correct.

d

The occlusal surfaces of the teeth are polished using a
bristle brush.
rubber cup.
toothbrush.
Both A and B are correct.

a

To polish the buccal surfaces of the maxillary left quadrant, the patient's head is turned ________________ the operator.
downward and away from
downward and toward
upward and away from
upward and toward

d

When polishing the lingual surfaces of the maxillary anterior, the operator would be seated at the ______ o'clock position.
6
8 to 9
10
3

b

When performing a coronal polish, the left-handed operator is seated at the ________ o'clock position.
1 to 2
3 to 4
8 to 9
10 to 12

b

Teeth that have been properly polished
are glossy.
have a dull finish.
reflect light.
Both A and C are correct

d

Which of the following should be done when polishing the buccal surfaces of the maxillary right posterior sextant?
Establish a fulcrum on the maxillary right incisors.
Have the patient tip his or her head up and slightly away from you.
Hold the dental mir

d

The most common of the extrinsic stains found in children is
black line.
green.
orange.
brown.

b

A rubber cup polishing with abrasives is used to remove what?

extrinsic plaque and stains from the clinical crown

Before etching and bonding of orthodontic brackets on enamel, teeth may be polished using what?

fine pumice

Proper positioning of the patient and right-handed operator for coronal polishing of the maxilla involves what?

The operator seated at the 9 o'clock position

What is recommended when polishing?

Begin with the distal surface of the most posterior tooth

To avoid the abrasive effects, what is the recommended amount of time to spend polishing each tooth?

3 to 5 seconds

What is recommended for polishing of porcelain indirect restorations?

Sapphire or diamond polishing paste

The term "motted enamel" is an endogenous stain that is also known as what?

dental fluorosis

__________ is an example of a medication that is known to cause developmental staining.

tetracycline

Coronal polishing is limited to removal of plaque and stains from which part of the tooth?

the clinical crown only

Polishing the crowns of the teeth is considered to primarily be what type of procedure?

cosmetic

What is coronal polishing most commonly done with?

dental handpiece with a prophy angle

What are the indications for a coronal polishing?

Before placing dental sealants, before placing a dental dam, before cementation of orthodontic bands, before application of acid etching solution on enamel, and before the cementation of crowns and bridges

What causing staining?

endogenous and exogenous. Foods drinks, medications.

Can intrinsic staining be removed?

NO

What causes intrinsic staining?

Environmental sources, smoking, dental amalgams.

Can extrinsic staining be removed?

Yes

What causes extrinsic staining?

Food, drinks, smoking

What is a disclosing agent and why is it used?

A harmless vegetable die that is used to show presence of plaque

Can exogenous be divided into extrinsic or intrinsic ?

yes

Can endogenous be divided into extrinsic or intrinsic?

no

What are abrasives?

All polishing pastes are abrasives

Upon completion of the coronal polishing procedure, What must you do to finish the procedure?

Floss the teeth

What tooth surfaces, when rubber cup is used?

Facial or buccal, lingual, occlusal

What can remove a intrinsic stain?

internal bleaching

examples of intrinsic stains?

tetracycline, fluorosis, non vital tooth, metallic

What is the most common tooth stain?

Yellow

What health risk is in disclosing agents

Iodine

When should disclosing agents not be used on a patient?

When patient has diabetes

What is humectants

A wetting agent for abrasives that reduce frictional heat

What abrasive do you use on gold restorations?

Zirconium silicate

Can you use zirconium silicate on composites ?

yes

What abrasive is used on enamel & metallic restorations?

Tin oxide

How is tin oxide produced ?

a fine powder mixed with humectants

What abrasive is used for heavy stains?

Flour of pumice

What type of fluoride is used in a tray?

APF( Acidulated phosphate fluoride)

Are the instruments in coronal polishing critical, semi critical, or non critical?

semi-critical

What is nasmyths membrane?

residue from epithelial tissue on the crowns of newly erupted teeth that may become extrinsially stained

What is coronal polishing done with?

dental handpeice, prophy angle, rubber cup, polishing material

When can endogenous stains be seen in dentions?

primary and permanent

is polishing necessary before fluoride is applied?

no

In air-polishing what is delivered through the handpiece, water and _______?

sodium bicarbonate

What are polishing cups made of?

Natural or synthetic rubber

If a patient has a latax allergy what polishing cup should be used?

Synthetic

What should you do before using bristle brushes?

soak in hot water

What is commericial pre mixed pate also called?

prophy paste

what should polishing agents look like after water is applied?

moist cake mix

Should polishing esthetic restorations be polished first or second?

first