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BDS3 Exam Questions > 2012 paper > Flashcards

2012 paper Flashcards

1
Q

3 materials for crowns

A

All ceramic crowns
PJC
All metal
Procelain fused metal

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2
Q

What is the purpose of a post?

A

For retention of the core

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3
Q

What are 3 types of posts?

A 
Cast metal
Ceramic
Fibre
Threaded, serrated or smooth
Parellel sided or tapered
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4
Q

What is the name given to the residual collar or dentine required before placing a post?

A

Ferulle

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5
Q

How much GP should be left in canal space when placing a post?

A

4-5mm

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6
Q

What are 2 forms of bone loss shown in radiograph?

A

Horizontal bone loss

Vertical bone loss

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7
Q

What are 3 characterstics of a ghost image?

A

Higher due to negative vertical beam angulation
Horizontally projected and horizontally magnified
Radiopaque
Changes in antero-posterior position

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8
Q

3 ways dose to patient is reduced?

A 
Rectangular collimation
F speed film/ digital sensor
Use film holders and beam aiming device
Justification
Focus to skin distance @20cm
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9
Q

Difference between compton scatter and photoelectric effect?

A

Compton contributes to patient dose

Photoelectric contributes to image contrast and patient dose

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10
Q

What is the metal used to absorb heat during x rays production

A

Lead/copper

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11
Q

Name another metal used in xray production?

A

Aluminuium for filtration

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12
Q

What is EADT and EAT?

A

Extra alveolar drying time - time tooth is out the mouth

Extra alveolar time - amount of time the avulsed tooth has been out the mouth including any storage medium

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13
Q

What are 3 stroage mediums for an avulsed tooth?

A

Saliva
Cold milk
Saline
Blood

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14
Q

2 pieces of info you would give to someone about an avulsed tooth?

A

Hold by crown only
Wash in cold running water and let water flow
replace in socket and get person to bite on it with tissue or store in saliva/milk
Seek immediate attention

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15
Q

What type of splint do you use for a subluxation?

A

Flexible splint for 2 weeks

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16
Q

What is the fluroide regime for high risk 4year old

A

1350-1500ppm toothpaste

22,600ppm fluroide varnish x2/x4 a year

17
Q

What age is it suitable to give a child mw?

A

> 8years old

18
Q

What is the toxic dose of toothpaste and how to treat

A

5mg/kg
<5mg - oral calcium milk and observe
5mg-15mg - oral calcium milk and admit to hosiptal
>15mg - urgent refer to hosiptal for IV calcium gluconate and caridac monitoring

19
Q

What is the thickness of shimstock?

A

10micrcrons/ 8

20
Q

Biologic width?

A

2mm - deepest part of sulcus to alveolar bone

21
Q

What are uses for CHX?

A 
ANUG
Trauma incidents
Immunocompormised patients
Candidosis
Post surgical procedure
22
Q

CHX delivery?

A

0.2% 10ml - 1min x2 day = 20mg

23
Q

What are the ways in which CHX is diminshed in eiffcacy by the patient?

A

food
other drugs
toothbrushing

24
Q

What is meant by substantivity?

A

Presistance of action of a drug

25
Q

What does TID mean?

A

3 times a day

26
Q

What is a common side effect of phenytoin?

A

Causes gingival hyperplasia

27
Q

Name 2 other drugs that can cause gingival hyperplasia?

A

Immunosuppressants - cyclosporin

Calcium channel blockers - nifedipine/amoldopine

28
Q

2 ways gingival hyperplasia can be treated?

A

Gingivectomy
By sealing
Changing medication patient is on

29
Q

What are 3 signs of ANUG

A 
Halitosis
Pseudomembrane formation
Gingival bleeding
Regional lymphadenopathy
Painful ulcerations of the tips of the interndetal papilla
30
Q

What MW is given to ANUG patients?

A

0.2% CHX x2 days

31
Q

What antibiotics can be used to treat ANUG?

A

400mg metronidazole x 3day for 3 days

500mg amoxicillin x 3day for 3-5days

32
Q

When would you give antibiotics for ANUG?

A

If evidence of spreading infection or systemic involvement

33
Q

What are the 5A’s in smoking cessation

A 
Ask
Advise
Assess 
Assist
Arrange a follow up
34
Q

What are 4 indications to extract a tooth?

A 
Gross caries
Ortho
Ectopic tooth
Patient did not want endo
Traumatic position
Chemo - poor prognosis
35
Q

2 drugs to watch out for when carring out XLA

A

Warfarin - anticogulant`

Aspirin - antiplatelet - risk of clot not forming correctly`

36
Q

Name the surgery used to repair cleft lip and palate?

A

Orthognathic surgery

BDS3 Exam Questions (13 decks)

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