Restorative - OSCE Review

Question 1

Which clamp is most commonly used when clamping a premolar tooth?

Answer 1

2A

Question 2

What might occur during dental dam placement if the holes are punched too close together?

Answer 2

Dental dam will stretch exposing the gingiva and causing leakage - or bunching

Question 3

What type of bur is used to form the walls of a cavity preparation?

Answer 3

Straight Fissure Crosscut

Crosscut is more aggresive*

Question 4

What is the preferred type of matrix when doing restorations on primary teeth?

Answer 4

T-Band

Question 5

What instrument is used for anterior restorative procedures to plane and cleave enamel?

Answer 5

Straight Chisel

Question 6

What instrument is used to accentuate line and point angles in internal outline and retention in cavity preparation?

Answer 6

Angle former

Question 7

Where is a liner placed within a cavity preparation?

Answer 7

In the deepest part of the cavity preparation

Question 8

Which quads would a 12A clamp be used for?

Answer 8

Quads 2 & 4

Question 9

What type of matrix would be used fora DOLB composite restoration?

Answer 9

Tofflemire Matrix - in this case we are missing a lingual and bucal wall so we need something that goes all around the entire tooth so the filling is not leaking out when placed

Typically, in other circumstances the sectional “beans” would be used for composite.

Question 10

How many points are on a dental dam frame?

Answer 10

7

Question 11

What is one of the benefits of glass ionomer as a liner?

Answer 11

it releases fluoride
it can be light cured (if you need to speed up the process)

Question 12

What type of bur is used in a slow speed handpiece to remove caries from a tooth structure?

Answer 12

round bur

Question 13

What is the purpose of the dental dam napkin?

Answer 13

comfort for the patient - not all hot, moist, sticky on face - absorbs moisture.

put on before you put the frame on

Question 14

What type of matrix would be used on a 4.7 DO amalgam?

Answer 14

Tofflemire Matrix - due to AMALGAM

Question 15

Composite fillings use what matrix?

Answer 15

Sectional!!

Question 16

Amalgam fillings use what matrix?

Answer 16

Tofflemire

Question 17

What thickness is a base placed to within a restoration?

Answer 17

1-2mm

Question 18

What type of matrix would be used for a 2.6 MOD composite restoration?

Answer 18

Sectional

Question 19

Where is a base placed within a cavity restoration?

Answer 19

on the pulpal floor, to a thickness of 1-2 mm

Question 20

What type of liner helps produce secondary dentin?

Answer 20

Calcium Hydroxide (Dycal)

Question 21

What type of retention do hand-cutting instrument help create within a preparation?

Answer 21

Mechanical Retention (the other type is Chemical Retention)

Question 22

What type of Matrix would be used for a 1.1 MIL restoration?

Answer 22

Mylar Strip (Celluloid Matrix) - 1 wedge would be used for a 1.1 MIL

Question 23

What type of bur is used in a highspeed handpiece?

Answer 23

Friction grip

Question 24

What type of instrument is used to manually remove decayed tooth structure?

Answer 24

Spoon excavator

Question 25

What type of bur has the most number of blades or flutes on the cutting end?

Answer 25

Finishing Bur

Question 26

What are diamond burs used for?

Answer 26

Diamonds cut extremely aggresive. Used mostly for Crown prepartion - remove large amounts of tooth structure

Question 27

What instrument is used to bevel cervical walls of mesial and distal retention areas?

Answer 27

Gingival Margin Trimmer (Mesial & Distal)

Question 28

What type of bur is used to form angles and retention grooves in the walls of a cavity preparation?

Answer 28

Tapered Fissure (Straight or cross-cut)

Question 29

List the four types of pulpal stimuli, and give an example of each.

Answer 29

Mechanical - presure from biting Chemical - acidic materials Physical - hot/cold Biological - saliva

Question 30

Order of Burs used in Restorative procedure

Answer 30

Straight Round Inverted

Question 31

Order of Handpieces used in a restorative procedure

Answer 31

Posterior: Spoon Excavator (only this if just occlusal) Angle Former Gingival Margin Trimmer (Mesial/Distal - either or both) Anterior: Straight - used only in anterior

Question 32

Cavity Varnish - what can't it be used with?

Answer 32

Composite or glass ionomer

Question 33

What is cavity varnish?

Answer 33

-thin liquid composed of copal resin - placed over the entire internal surface of the cavity preparation before the restorative material is placed - seals dentinal tubules, reduce microleakage around a restoration, and act as a barrier to protect the tooth from highly acidic types of cement such as zinc phosphate

Question 34

When is Polycarboxylate Base used?

Answer 34

Used if cavity is deep, close to pulp - creates a buffer layer

Question 35

Purpose of Polycarboxylate base?

Answer 35

Protective - from sensitivity Insulating - for thermal shock Sedative - if pulp has trauma

Question 36

Calcium Hydroxide

Answer 36

“dycal” – stimulates pulp to produce secondary dentin -either “two-paste system” or “light-cured” material - placed in deepest portion

Question 37

Glass Ionomer

Answer 37

releases fluoride slowly over time -either “self cured” or “light cured” -powder and liquid is the most common method of dispensing -placed in deepest portion