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BDS2 OSCE > Paeds > Flashcards

Paeds Flashcards

1
Q

difference in rigid and flexible splint

A 
rigid = 2 teeth either side 
flexible = 1 tooth either side
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2
Q

alternative treatment for temporary splint

A

foil + ZOE

vacuum formed splint - terrible for OH

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3
Q

how to mix GI

A

3 scoops of powder : 3 drops of distilled water

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4
Q

how soon does avulsed tooth need to be reinserted to avoid root therapy?

A

<45 mins from avulsion if open apex

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5
Q

immediate intervention to avulsed tooth

A
  1. do not touch root
  2. rinse for 10 secs in cold water
  3. reinsert if you can
  4. store in saliva or cold milk
  5. use gauze to stop bleeding
  6. get emergency appointment
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6
Q

deciduous tooth eruption sequence

A

in sequence with exception of canines i.e. centrals, laterals, first primary molars canines, second primary molars.

1 2 4 3 5

lowers erupt before uppers with exception of lateral incisors

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7
Q

what is leeway space

A

extra mesiodistal space occupied by primary molars which are wider than the premolars that replace them

  1. 5mm per side in maxilla
  2. 5mm per side mandible
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8
Q

deciduous vs permanent pulp

A

deciduous pulp horns are larger in proportion to crown that surrounds them and pulp horns extend higher occlusally

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9
Q

narrower, more slender, and flare apically best describes primary or permanent roots

A

primary

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10
Q

what teeth would you expect an 8yr old child to have

A

both first permanent molars
upper and lower centrals
upper and lower laterals

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11
Q

definition of mixed dentition

A

begins from when first permanent tooth erupts to the exfoliation of the last permanent tooth

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12
Q

eruption sequence of lower permanent teeth

A

6 1 2 3 4 5 7 8

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13
Q

6 1 2 4 5 3 7 8 is the eruption sequence of what

A

upper permanent teeth

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14
Q

significant morphology of primary first molars

A

both upper and lower have a prominent tubercle on mesiobuccal cusp

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15
Q

significant morphology of lower second primary molars

A

3 buccal cusps which have a lingual lean

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16
Q

significant morphology of upper primary second molars

A

prominent transverse ridge

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17
Q

primate spacing

A

spacing mesial to upper canine and distal to lower canine

18
Q

characteristics of deciduous incisors

A

upright - increased proclination in permanent teeth causing a increased A-P arch length
less overjet

19
Q

indications for fissure sealants

A

high caries risk (molars and premolars should be sealed on eruption)
medically compromised children
learning difficulties

20
Q

materials used in fissure sealants

A

etch

bis GMA

21
Q

why conventional endo can’t be used for primary teeth

A
  1. roots are variable - number/divergence/curvature
  2. ribbon shaped canals have many interconnections
  3. psychological resorption of roots prior to exfoliation
  4. root morphology changes with age so resorbable filling materials must be used unlike standard ones
  5. if canals instrumented beyond apices the permanent successor could be damaged
22
Q

indications for pulp therapy (6)

A

good cooperation / medical history preludes extraction / missing permanent successor i.e. hypodontia / over-riding necessity to preserve both i.e. space maintainer / child under 9yrs / not necessary to use GA

23
Q

contraindications for pulp therapy

A

poor cooperation / poor motivation / multiple gross carious teeth / medical history / tooth unrestorable / severe pain and infection / space management / advanced root resorption / pus in pulp chamber / gross bone loss

24
Q

normal bleeding in pulp

A

bright red in colour
good haemostasis
uninflamed pulp

25
Q

abnormal bleeding

A

deep crimson
continued bleeding after pressure
inflamed pulp

26
Q

signs of non vital pulp

A
  1. hyperaemic pulp (lots of bleeding)
  2. pulp necrosis
  3. furcation involvement
27
Q

symptoms of non vital pulp

A
  1. irreversible pulpitis
  2. periapical periodontitis
  3. chronic sinus
28
Q

what is vitapex

A

CaOH and iodoform paste

29
Q

why use vitapex

A 
resorbs from apical tissues in 1wk-2mths 
harmless to permanent tooth germ
radiopaque 
does not set to hard mass
easy to insert and remove
30
Q

minor failure of hall technique

A
  1. secondary caries
  2. crown worn / lost / requires additional intervention
  3. restoration lost but tooth restorable
  4. reversible pulpitis treated without pulpectomy or extraction
31
Q

major failure of hall technique

A
  1. irreversible pulpitis
  2. abscess requiring pulpotomy or extraction
  3. interradicular radiolucency
  4. filling lost and tooth unrestorable
32
Q

risk factors for caries in children

A

OH, diet, bacterial exposure, socio-economic status, breast/bottle fed, fluoride exposure, parental smoking, parental OH

33
Q

nursing caries - where and why

A

upper anterior and upper/lower molars due to inappropriate use of feeding bottles/cups i.e. should always have free flow spout

34
Q

prevention of caries in children

A 
diet - swap sugary snacks for savoury i.e. cheese, breadsticks, fruit 
fluoride - varnish and mouthwash
OH - should begin on eruption of first primary tooth / assisted / twice daily / smear of toothpaste
free flow spout with plain drink
1000ppmF 3 yrs 
1000-1500ppmF 4-16
<10yrs high risk 1500ppmF
>10yrs high risk 2800ppmF (duraphat)
35
Q

fluoride varnish

A

twice yearly for pre school kids at increased risk of caries

36
Q

indication for fissure sealants

A

high caries risk - should have perm molars and premolars sealed on eruption
medically compromised
learning difficulties

37
Q

what is a fissure sealant

A

a protective plastic coating used to seal pits and fissures to prevent food and bacteria getting caught in them and causing decay

38
Q

extraction of FPM

A

may help with spacing if prognosis poor
optimal occlusion obtained when:
- bifurcation of lower 7 seen forming on OTP (8.5-10yrs)
- 5s and 8s are all present and in good position
-mid buccal segment crowding
-class I incisor relationship

39
Q

fissure restorations

A

if stained enamel then remove 1mm of tissue, should not be like a prep, then use flowable > fissure seal

40
Q

how to tell what age in mixed dentition

A 
6s = 6yrs
upper centrals and lower laterals = 7yrs 
all incisors = 8yrs
lower canines = 9yrs
premolars = 10yrs 
upper canines = 11yrs 
7s = 12yrs

BDS2 OSCE (8 decks)

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