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BDS3 MSA > 2020 > Flashcards

2020 Flashcards

1
Q

definition of translucency

A

the ability of a material to allow light to pass through however, this light is either scattered by one of the surfaces or internally, leading to a blurring of the transmitted light

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2
Q

definition of opalescence

A

ability of a translucent material to appear blue in reflected light and yellow in transmitted light

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3
Q

how does silane coupling agent work

A

hydroxyl groups at one end , C=C at the other
hydroxyl groups bond with oxide groups on ceramic surface
C=C interacts with similar groups on the (composite) luting agent

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4
Q

function of silane in composite restorative material

A

chemically bonds filler particles and resin matrix together

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5
Q

four main features of a randomised controlled trial

A

comparison group
allocation concealment
randomised group allocation
blinding of researchers

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6
Q

describe how randomisation can be implemented in a RCT

A

use a computer based programme to randomly allocate each person to either group. This means each patient will have the same chance of being in either group

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7
Q

name 4 patient related factors that may need to be considered when analysing results of RCT concerning teeth

A

age
medical history
tooth condition
smoking status
tooth type

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8
Q

standards developed to improve reporting of RCTs?

A

CONSORT guidelines

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9
Q

4 questions to ask a smoker?

A

how long have you smoked?
how many a day?
What do you smoke?
how soon after waking up do you have a cigarette?
have you ever tried to quit in the past?
would you like help quitting now?

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10
Q

definition of dependence

A

being controlled by and relying on

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11
Q

what are the 3 As

A

ask
advise
act

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12
Q

two evidence based methods for smoking cessation

A

nicotine replacement therapy
varenicline (champix)

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13
Q

what to do if patient doesnt want smoking cessation help now

A

document the conversation and advice given in notes.
Make note to revisit the topic at next appointment in case changed his mind.
If available give a leaflet with helpline numbers

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14
Q

how to clinically assess antero -posterior relationship

A

palpate anterior concavities of mandible and maxilla using index and middle finger
visually assess side on
maxilla should ideally be 2-3mm anterior to mandible

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15
Q

how to clinically assess vertical skeletal relationship

A

assess FMPA - frankfort and mandibular planes ideally should meet at external occipital protuberence
Determine ratio of LAFH:TAFH - average is lower is 50% of TAFH

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16
Q

how would you describe the developmental skeletal relationship of someone with a class III incisor relationship

A

mandibular prognathism
maxillary hypoplasia

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17
Q

reference plane for OPT

A

frankfort

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18
Q

three features of ghost images

A

horizontally magnified
higher up
opposite side

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19
Q

what setting of OPT could you use for a child

A

p4

20
Q

advantages of extracting 1st permanent molars at the ideal time

A

spontaneous closure of space
caries free dentition

21
Q

disadvantages of extracting 1st permanent molars of poor prognosis

A

anxiety surrounding future treatment
risks assosciated with GA
loss of a molar for functional purposes e.g eating

22
Q

what two methods of anaesthesia might a child require to have molars removed

A

general anaesthetic
inhalation sedation

23
Q

what guidance should we refer to for treating patients taking warfarin surrounding timings of INR

A

SDCEP - within 24 hours
NICE - 72 hours if INR stable

24
Q

3 examples of post op bleeding management

A

prolonged pressure with damp gauze
sutures
La with vasoconstrictor
pack with surgicel
diathermy

25
Q

how would you describe total loss of sensation in a nerve

A

anaesthesia

26
Q

three clinical reasons for nerve damage

A

transected during surgery
cut during flap design
crushed during tooth extraction
LA injected directly into nerve

27
Q

two acts of law related to disabled people

A

Equality act 2010
Disability discrimination act 2005

28
Q

name two alternative methods of communication for someone with cerebral palsy

A

eye tracking technology
picture board

29
Q

what aspect of cerebral palsy may impact access to mouth and how might this be overcome

A

uncontrollable muscle spasm
bedi mouth prop
unbreakable mirror head

30
Q

4 physical characteristics of downs syndrome (not mouth)

A

deep groove between first and second toes
single deep crease on palm
short neck with excess skin at the back
small head, ears and mouth

31
Q

genetic change responsible for downs syndrome

A

trisomy of chromosome 21

32
Q

2 features of downsyndrome likely to contribute to increased incidence of dental disease

A

impaired ability to self care - decreased OH
systemic immunodeficiency

33
Q

name four risk factors for mouth cancer

A

smoking
alcohol
immunosuppresion
diet low in fruit and vegetables

34
Q

what two pieces of info about a patients radiotherapy would you need to know

A

total dose
field

35
Q

how would you treat a tooth in a patient with increased risk of ORN whos coronal portion is unrestorable

A

endodontic treatment and coronectomy

36
Q

management of ORN

A

hyperbaric oxygen therapy

37
Q

what is each part of PPE protecting you from during manual cleaning

A

heavy duty rubber gloves - sharps injuries
Apron - splashes
Visor - aerosols

38
Q

how often should an ultrasonic be de gassed

A

every time it is refilled from empty

39
Q

why should handpieces not be placed in ultrasonic

A

may be damaged by ultrasonic activity
should not be immersed as water in lumen will prevent sterilisation

40
Q

4 microbial stages of caries plaque formation

A

adhesion
colonisation
maturation
acid production

41
Q

name 2 key virulence factors of s.mutans

A

ATPase - pH control
glucans - attachment

42
Q

name a virulence factor of enterococcus faecalis

A

adhesins

43
Q

why is it difficult to implicate a specific bacteria in endodontic infections

A

hard to achieve a sterile sample

44
Q

name a culture independent method of looking at microorganisms

A

next generation sequencing

45
Q

limitations of next generation sequences

A

able to tell us what is present but gives limited info on clinical significance - cant tell us what each species is doing

BDS3 MSA (3 decks)

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