OSCE review

What type of bur

Mandrel

Connects different types of wheels for lab

What type of bur

Friction

Used for cutting hard tissues- tooth or bone

Remove hard material, takes away enamel leaves a rough finish

What type of bur

Latch

Greater control for cutting enamel "caries removal" bone countering, finishing endo acess, prep for crown and bridges

What type of hand piece

High speed: removal tooth tissue

What type of hand piece

Slow speed

Removes soft decay, finishing cavity preperation, polishing, trimming

How do you know tooth enamel is etched properly?

a. surface is shiny

b. surface is frosted

c. surface stays the same

d. it does not matter what the surface looks like.

Surface is frosted

Which of the following amalgam types require less condensation pressures and requires heavier wedging to establish contact?

a. admix

b. spherical

c. lathe-cut alloy

d. none of the above

Spherical

What is the function of the bottom knob on the Tofflemire matrix retainer?

a. tightens and loosens the spindle within the diagnal slot.

b. increases or decreases the size of the matrix band loop.

c. holds the matrix band in position

increases or decreases the size of the matrix band loop.

How do you check for adequate occlusion after placement and finishing of the amalgams and composites?

a. the patient tells you

b. the dentist knows

c. through using articulating paper

d. with PIP paste

through using articulating paper

What type of curing light is used in our Dental Materials Lab for polymerizing light-cured materials?

a. Light Emitting Diode (LED)

b. Plasma Arc (PAC)

c. Quartz- Tungsten-halogen (QHT)

d. Laser (argon laser)

Light Emitting Diode (LED)

After cavity preparation finished and before placing of composite restoration, you need to isolate the prepared area and moist tooth and check for

a. occlusion

b. shade guide

c. rubber dam placement

d. none of the above

None of the above

What are the armamentarium for finishing and polishing amalgam restorations?

a. mouth mirror, dental explorer, perio probe, hemostate, contra angle

b. perio probe, mouth mirror, contra angle, plastic instrument, articulating paper

c. mouth mirror, dental explorer, finishing burs, contra angle, articulating paper

d. mouth mirror, finishing burs, perio probe, contra angle, plastic instrument

mouth mirror, dental explorer, finishing burs, contra angle, articulating paper

True or False

The diagonal slotted surface of the matrix band retainer is positioned away from the gingiva.

False

What class cavity restoration is a Tofflemire matrix band placed?

II

The purposes of the placement of the wedge in class Il cavity preparation (proximal embrasures) are

Prevent overhang margins at the proximal area

Instrument used to place dental clamp onto the tooth

Dental dam forceps

What size of rubber dam material is used in our Dental Materials Lab?

5*5- anterior and primary

6*6- most common for posterior

Which clamp is used for isolation of the facial surfaces of anterior and some posterior teeth?

Butterly shaped clamps

True or false

In a class Il cavity preparation the wedge is placed with the widest side towards the gingiva and placed buccal to lingual.

True

True or false

A contra angle is only placed on high speed handpieces.

False

Before placing a sealant the tooth must be:

a. free from plaque

b. free from decay

c. free from food debris

d. all of the above

All the above

True or false

Sealant composites resemble flowable composites but have more viscosity to allow the material to stick to the pits and fissures.

False

Polishing of the amalgam restoration is best done:

A. at the time of placement of restoration

b. after finishing the amalgam restoration

c. 24 hours or longer after the initial placement

d. none of the above

c. 24 hours or longer after the initial placement

Time to polish amalgam

24 hours

Polish used for amalgam

Fine pumice

What dental procedure is this instrument used for

Burnishing amalgam

What dental procedure is this instrument used for

Carving amlagam

What dental procedure is this instrument used for

Condensing amalgam

This instrument is used to smooth the restorative surfaces and margins:

a. carver

b. condenser

c. ball burnisher

d. plastic instrument

Ball burnisher

True or false

Light cured materials harden as the result of a chemical reaction when the materials are mixed together.

False

Name system

Dental composite gun

Name system

Flowable composite

Clamp size used for molars

5

Most popular whitening

35% hygdrogen peroxide and Camamide peroxide

Hydrogen peroxide breaks down into.....?

Water and oxygen

carbamide peroxide breaks down into

Hydrogen peroxide and urea

What does 20% carbamide peroxide release

6-7% hydrogen peroxide

What bur is this

Acrylic bur used for trimming, shapening

Calcium hydroxide mix and setting time

Mix- 10 sec

Set- 2-3 min

Zinc phosphate setting & mixing time

Mix- 1-1.5 min

Setting- 5.5 min

Glass Ionmer setting & mixing time

Mix- 3-45 sec.

Setting- 7 min

ZOE setting & mixing time

Mix- 1.5 min

Setting- 2.5-3.5 min

Polycarboxylate mix and setting time

Mix- 30 sec

Setting- 10 min

Temp mixing and setting time

Mix- 30 sec.

Setting- 5 min

Composite mixing and setting time

Mix- 30-45 sec

Setting- 5 min

Calcium Hydroxide

Protects pulp

Accelartor and base on mixing pad

Stiumlate secondary dentin

ZOE

Weak, oily, accelrated setting reaction

Soothing to pulp

Not strong

Temp. Restorations, luting temp. Crowns

Eugenol

Made of oil of cloves

Irritation reducer

Zinc phosphate

Zinic oxide & phosphoric acid

Strong, acidic at first

Small increments

Will stretch 1 inch. Between slab and spachula

Glass slab- figure 8 pattern due to exothemic reaction

Silicate cement

Glass powder & phosphoric acid

Used historically for fluoride release

Glass ionomer

Glass powder mixed with solution or polyacrylic acid

Single dose capsule

Flurode realse- higher in cavities

Polycarboxylate

Zinic oxide & polyacrylic acid

Bond to tooth

Kinder to pulp

Composite cements

High % of resin and smaller particle size

Chemical and light activated

Phosphoric acid %

37%

Sealants times

Dry tooh for 10 sec to inspect

Apply etch for 15-20 sec

Gel rinse- 30 sec

Liquid etch- 10- 15 sec

Dried again for 15-30 sec

Chaky white apperance

Cure for 20 sec.