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Final Exam Past Paper Questions > Restorative > Flashcards

Restorative Flashcards

1
Q

name four steps of immediate management of a tooth with 2mm pulpal exposure

A

locate missing fragment
LA and rubber dam
pulpotomy - access, remove coronal pulp, achieve haemostasis with saline soaked cotton wool, place CaOH, seal with GIC, composite dentine as bandage

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2
Q

what is the likely design of a bridge that has debonded and causing pain to one of the teeth

A

fixed-fixed resin bonded bridge

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3
Q

name four factors that would cause a bridge to debond

A

caries under the retainer
poor OH
trauma
poor moisture control during cementation
unfavourable occlusion

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4
Q

what are the criteria for valid consent

A

informed
voluntary
not manipulated
not coerced
with capacity

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5
Q

name three features of a nayyar core

A

2-4mm of GP removed from canal and replaced with amalgam
retention obtained from undercuts in divergent canals and pulp chamber
coronal preparation can be done at same appointment

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6
Q

list types of tooth wear

A

attrition
abrasion
erosion

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7
Q

list three ways of desensitising a tooth

A

seal and protect
desensitising toothpaste
fluoride varnish
tooth mousse

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8
Q

what is the Dhal technique

A

localised restorations or appliances to increase interocclusal space for restorations

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9
Q

how does the dhal technique work

A

place appliance (essex retainer) or add composite platforms to increase OVD on palatal side of upper incisors and allow for dento-alveolar compensation for 3-6 months
once compensation occurs build up incisors to new OVD

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10
Q

what are four contraindications for Dhal technique

A

active perio disease
ankylosis
implants
MRONJ

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11
Q

what factors affect treatment choice of a pulp exposure

A

size of pulp exposure
time since exposure

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12
Q

how do you manage a sodium hypochlorite injury

A

pain relief
reduce swelling
cold compress for first few days
warm compress for resolution of soft tissue swelling
analgesics
review within 24 hours
refer if severe

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13
Q

how can you prevent a hypochlorite injury

A

provide mask and bib
use rubber dam
pre-op radiograph to ensure closed apex
do not go to full working length
use chlorhexidine first to ensure correct seal
build up walls of broken teeth with composite
do not wedge needle in canal
do not depress plunger with thumb

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14
Q

name 3 post materials

A

gold
nickel chromium
ceramic
titanium
carbon fibre
stainless steel

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15
Q

what are four indications for posts

A

4-5mm GP remaining
post less than 1/3 root width
post to crown ration 1:1
at least half the post into root
1mm circumferential dentine

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16
Q

what can be used to cement posts

A

GI
composite resin luting cement

17
Q

how can you remove a fractured post

A

ultrasonic vibration
masseran cut
cut out fibre posts
eggler post removal

18
Q

signs of erosion

A

loss of surface detail
cupping on molars
raised restorations above tooth surfaces
translucent incisal edges

19
Q

what factors does an implantologist consider before placing implants

A

smoking status
bone quality
oral hygiene
patient motivation
occlusion
aesthetics

20
Q

what bone requirements are needed for implant placement

A

1.5mm horizontal bone
3mm bone between implants
more than 5mm space for papilla between bone crest and contact point

21
Q

5 causes of transient sensitivity to thermal stimuli and pain on biting

A

irreversible pulpitis
gingival recession
periodontal disease
dental bleaching
dental abrasion

22
Q

what strength is duraphat varnish

A

22 600 ppmF

23
Q

how does LA work

A

blocks voltage gated sodium channels and prevents up regulation of action potentials

24
Q

what are the three characteristics of an ideal post

A

parallel
non threaded
cement retained

25
Q

give three materials of posts

A

fibre
metal
ceramic

26
Q

give three examples of core material

A

RMGIC
composite
amalgam

27
Q

give reasons why posts and cores debond

A

traumatic fracture
untreated caaries
inadequate moisture control

28
Q

give the 6 principles of cavity preparation

A

identify and remove carious enamel
remove enamel to identify extent of lesion at ACJ
progressively remove peripheral caries in dentine
remove deep caries over pulp
outline form modification
internal line and point angles

29
Q

what is the hybrid layer

A

collagen network providing adhesion between tooth and material through primer and bonding agent
collagen exposed with acid etched

30
Q

what are the types of dentine

A

primary - laid down during development
secondary - laid down during function
tertiary reactionary - mild stimuli
tertiary reparative - intense stimuli

31
Q

what is the inorganic component of dentine

A

calcium hydroxyapatite

32
Q
A

Final Exam Past Paper Questions (4 decks)

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