OSCE 2013

Question 1

For a handpiece what are the 5 things you must check before use?

Answer 1

Check the back of HP is tight
Check bur cannot be pulled out
Roll the bur on your finger checking that it can spin freely
Bur doesn’t wobble
Finally when running everything sounds okay

Question 2

What does DR ABC stand for?

Answer 2

Danger 
Response 
Airway
Breathing 
Circulation

Question 3

When calling an ambulance what must you tell them over the phone?

Answer 3

Where you are
The condition of the patient
Give a phone number
That you need an AED and BVM

Question 4

When giving CPR how many compression should be given per minute?

Answer 4

100-120

Question 5

What is the ratio of compressions to ventilations>

Answer 5

30 compressions to 2 ventilations

Question 6

How do you open a patients airway?

Answer 6

Head tilt chin lift

Question 7

What are probes used for?

Answer 7

Caries detection

Surface inspection

Question 8

What is a CPITN probe used for and what does it look like?

Answer 8

Used for BPE and has a black band from 3.5-5.5mm with a round ball at the end.

Question 9

What does a PCP12 probe look like and what is it used for?

Answer 9

6PPC

Has two black bands, one from 3-6mm and another from 9-12mm

Question 10

What are excavators used for?

Answer 10

Caries excavation

material removal

Question 11

What are chisels used for?

Answer 11

Finishing cavo-surface margin angles and removal of unsupported enamel prisms.

Question 12

What are burnishers used for?

Answer 12

Finishing amalgam and manipulating composite

Question 13

What are Applicators used for?

Answer 13

Placement of lining material

Question 14

Question 4 and 5 is about anatomy and cavity nomenclature.

Answer 14

See word doc

Question 15

How many surfaces form to make line angles and point angles?

Answer 15

Line - 2

point - 3

Question 16

Describe the shape of the mini-sickle, where you would use it in the mouth and the cross-section?

Answer 16

Two cutting surfaces on each blade for embrasure surfaces supra-gingivally
Triangular cross-section

Question 17

Describe the shape of the Columbia universal curette, where you would use it in the mouth and the cross-section?

Answer 17

Two cutting surfaces on each blade
Subgingival and root planing anywhere in the mouth (limited access to deep pockets)
Rounded X section

Question 18

How many cutting edges does the Gracey curettes have?

Answer 18

One

Question 19

Where in the mouth would you use the grey Gracey?

Answer 19

anterior

Question 20

Where in the mouth would you use the green Gracey?

Answer 20

posterior

Question 21

Where in the mouth would you use the blue Gracey?

Answer 21

Distal

Question 22

Where in the mouth would you use the orange, Gracey?

Answer 22

Mesial

Question 23

Where in the mouth would you use the yellow hoe scaler?

Answer 23

Buccal and lingual

Question 24

Where in the mouth would you use the red hoe scaler?

Answer 24

Mesial and distal

Question 25

Principles for using Gracey Curettes?

Answer 25

Determine the larger outer cutting surface The terminal shank should be parallel to the surface Use fulcrum finger and finger rest Vertical and diagonal cutting strokes

Question 26

Where do you sit to scale 43-33?

Answer 26

7 o'clock

Question 27

What teeth do you scale at 9 o'clock?

Answer 27

44-48 buccal 34-38 lingual 14-18 buccal

Question 28

What teeth do you scale at 11 o'clock?

Answer 28

``` 44-48 lingual 34-38 buccal 13-23 labial and palatal 14-18 palatal 24-28 buccal and palatal ```

Question 29

When should all deciduous teeth have erupted by?

Answer 29

2 and 1/2 years

Question 30

When does a babies first tooth come in?

Answer 30

4-6 months (lower central)

Question 31

All permanent teeth should be in by what age?

Answer 31

12-13 years

Question 32

What permanent tooth comes in first and at what age?

Answer 32

lower 6's and at 6yrs

Question 33

What is the order of deciduous teeth?

Answer 33

A,B,D,C,E

Question 34

What is the order of eruption for permanent uppers?

Answer 34

6, 1, 2, 4, 5, 3, 7, 8

Question 35

What is the order of eruption for the permanent lowers?

Answer 35

6, 1, 2, 3, 4, 5, 7, 8

Question 36

From the eruption date, how long does it take for apexogenesis?

Answer 36

3years

Question 37

What are some key differences between primary and permanent teeth?

Answer 37

Primary anteriors are smaller in both crown and root proportions. Primary molars are wider M-D Primary molar crowns are more bulbous Primary teeth are usually whiter in colour

Question 38

What feature is found on the mesial buccal cusp of the primary D?

Answer 38

Tubercle of Zuckerkandl

Question 39

Where is the cusp of carabelli found in primary teeth and which tooth?

Answer 39

The upper E's on the mesio-lingual cusp

Question 40

How many roots do the primary upper molars have?

Answer 40

3 | 2 buccal and 1 lingual

Question 41

How many cusps do the lower E's have?

Answer 41

5 like permanent 1st

Question 42

Where is the maxillary tuberosity found?

Answer 42

Buldge behind maxillary 2nd molars

Question 43

What is the name for the anatomical feature found behind the tuberosity at the junction of the maxilla and hamular process of the sphenoid bone?

Answer 43

Hamular notch

Question 44

What is the name given to the line where the hard and soft palate meet?

Answer 44

Vibrating line

Question 45

What is the name given to the two small depressions behind the vibrating line and what purpose do they serve?

Answer 45

Palatine fovea | Role in gag reflex

Question 46

Describe what the palatine raphe is?

Answer 46

A line that runs down the centre of the hard palate

Question 47

What is the name given to the wrinkles at the side of the hard palate?

Answer 47

Palatine rugae

Question 48

What is a pear-shaped pad?

Answer 48

Refers to an area formed by residual scaring of 3rd molar Ex and retromolar papilla.

Question 49

Why is the pear-shaped pad important when making dentures.

Answer 49

The denture should extend over the distal edge of the pear-shaped pad

Question 50

Where is the retromolar pad found?

Answer 50

Elevation distal to the mandibular 2nd molars

Question 51

where is the buccal shelf found?

Answer 51

On buccal surface of the mandible just above the external oblique line

Question 52

What are mandibular tori and where can they be found?

Answer 52

Boney growths are found along the surface nearest the tongue. Around the pre-molars area and attachment of the mylohyoid muscle attachment to mandible

Question 53

Where is the mylohyoid ridge found?

Answer 53

On the inner surface of the mandible. | Giving attachment for the mylohyoid muscle and superior constrictor of the pharynx

Question 54

Why is the pterygomandibular raphe an important feature?

Answer 54

Used for injection site of IANB. | Extends from lower last standing molar to the upper.

Question 55

What are the names given to the top of the tongue and the bottom of the tongue?

Answer 55

Top - dorsum | bottom - ventral

Question 56

How long do you splint an avulsed tooth?

Answer 56

2 weeks

Question 57

What must the wire be that is placed on the avulsed tooth?

Answer 57

Passive

Question 58

Describe the process of splinting an avulsed tooth?

Answer 58

Make sure the tooth is held by crown and reimplant. Get 0.6mm HSSW, use floss to measure and cut wire to fit halfway on either abutment tooth. Acid etch and prime and bond all 3 teeth. Apply composite to all 3 Sink the contoured, passive wire into the composite Shape and cure composite, add thin covering if needed on top Smooth rough composite and wire ends

Question 59

Why do you not need to always extirpate the pulp of an avulsed tooth?

Answer 59

As if the tooth has an open apex can revascularize

Question 60

If the EAT is less than 60mins but has a close apex what would your Tx be?

Answer 60

Replant tooth under LA Splint the tooth for 2 weeks Remove the pulp asap (that day) Place in anti-biotic steroid paste as an intra-canal medicament. Remove at 2 weeks with the splint and replace with NSCaOH. Obturate with GP at 4-6w Refer to a specialist for interdisciplinary management