OSCE 1

Question 1

why do we record smile line

Answer 1

to get an idea of how much tooth will show when smiling

Question 2

why do we record centre lines

Answer 2

so the midline of the teeth matches the midline of the patients face

Question 3

why do we record canine line

Answer 3

dictates the size of tooth to be used

Question 4

why do we record residual alveolar line

Answer 4

so the teeth are set in such a way above the lower residual ridges that the contacts are on this line

Question 5

why do we record rim profile

Answer 5

to ensure adequate lip support

Question 6

what are the transfer lines for pros we note

Answer 6

high smile line
centre line
canine line
residual alveolar ridge
alveolar contour line
rim profile

Question 7

what is the value of fluoride in mouthwash

Answer 7

225ppmF

Question 8

from what age can fluoride mouthwash be given

Answer 8

7 years old

Question 9

what is the treatment for someone potentially ingesting 5mg/ kg bodyweight of fluoride

Answer 9

give milk and observe

Question 10

what is the treatment for someone potentially ingesting 5-15mg/kg bodyweight fluoride

Answer 10

give milk and send to hospital

Question 11

what is the treatment for someone potentially ingesting 15mg/kg bodyweight fluoride

Answer 11

hospital and IV calcium gluconate

Question 12

what is the max safety tolerated dose of fluoride

Answer 12

1mg/ kg bodyweight

Question 13

what are the seven factors for caries risk assessment

Answer 13

diet
plaque control
fluoride use
medical history
social history
DMFT
saliva

Question 14

what would 1000ppmF toothpaste be used for

Answer 14

6months - 6years unless low risk

Question 15

what would 1450 ppmF toothpaste be used for

Answer 15

over 6 years old for low risk kids
over 3 years old for high risk kids

Question 16

what is 2800ppmF toothpaste used for

Answer 16

over 10 year olds high risk

Question 17

what is 5000ppmF toothpaste used for

Answer 17

over 16 year olds high risk

Question 18

what is the concentration of fluoride in mouthwashes for over 6 year olds

Answer 18

225ppmF or 0.5%

Question 19

what are red radiograph holders used for

Answer 19

bitewings for coronal of posterior teeth

Question 20

what are yellow radiograph holders used for

Answer 20

posterior periapical for image of a complete tooth including root

Question 21

what are green radiograph holders used for

Answer 21

endo for identifying working lengths

Question 22

what are blue radiograph holders used for

Answer 22

anterior periapical for complete anterior tooth including root

Question 23

what size film should be used for bitewings

Answer 23

2

Question 24

what size film should be used for anterior PA and endo radiographs

Answer 24

0

Question 25

what size film should be used for posterior PA and endo

Answer 25

2

Question 26

what size of film should be used for a deciduous bitewing radiograph

Answer 26

0

Question 27

what should be included in a diet diary

Answer 27

3 days write down everything consumed at the time 1 weekend day and 2 week days

Question 28

what thickness of stainless steel is used for orthodontic retentive wire

Answer 28

0.7mm

Question 29

what thickness of stainless steel is used for active component wire in orthodontic s

Answer 29

0.5mm

Question 30

what are the dimensions of a bite plane

Answer 30

overjet plus 3mm

Question 31

what is the action of warfarin

Answer 31

inhibits vitamin K activity - inhibiting coagulation

Question 32

what does INR stand for

Answer 32

international normalised ratio

Question 33

what is the maximum INR value to undertake extractions

Answer 33

4

Question 34

what drugs interact with warfarin

Answer 34

antibiotics, carbamazepine, metronidazole, ibuprofen

Question 35

why should NSAIDs not be used after extractions with a patient taking warfarin

Answer 35

antiplatelet effect will increase bleeding time

Question 36

what is the treatment for necrotising gingivitis

Answer 36

ultrasonic debridement, chlorhexidine mouthwash and OHI

Question 37

what is the standard drug treatment for necrotising gingivitis

Answer 37

metronidazole 200mg 3xday for 3-5 days

Question 38

what is an alternative drug treatment to metronidazole 200mg 3 times per day for 3-5 days

Answer 38

amoxicillin 250mg 3xday for 7-10 days

Question 39

what are three predisposing factors for necrotising gingivitis

Answer 39

stress, smoking, poor OH

Question 40

what is the purpose of EDTA in endodontics

Answer 40

removes smear layer

Question 41

what concentration of EDTA is usually used in endodontics

Answer 41

15%

Question 42

what is the normal concentration of sodium hypochlorite used in endodontics

Answer 42

0.5% - 5%

Question 43

what is the purpose of sodium hypochlorite

Answer 43

disinfects and dissolves pulpal remnants, disrupts organic portion of the smear layer

Question 44

what is the purpose of chlorhexidine use in endodontics

Answer 44

disinfect canals - used 0.2%

Question 45

why are paper points placed in the canal before medicating or obturating

Answer 45

to ensure the canal is dry

Question 46

what are two examples of medicaments used for endodontics

Answer 46

Ultracal - non-setting calcium hydroxide Ledermix - corticosteroid and antibiotic mixture

Question 47

what is non-setting calcium hydroxide used for in endodontics

Answer 47

as an intervisit medication to prevent infection

Question 48

why might a corticosteroid/ antibiotic mixture be used as a medicament in endodontics

Answer 48

an intervisit medication for hot, infected pulps to reduce inflammation

Question 49

what are the two types of obturation materials used in endodontics

Answer 49

gutta percha points resilon

Question 50

how are gutta percha points placed in the canal

Answer 50

cold lateral compaction or thermafill which requires AHSPlus sealant

Question 51

how is resilon used to obturate canals

Answer 51

requires epiphany sealant