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Restorative > Class III Restorations > Flashcards

Class III Restorations Flashcards

1
Q

what indicates dentine caries

A

triangular shaped brown lesion

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2
Q

what is indicated by a brown spot lesion

A

arrested caries

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3
Q

what does active caries look like

A

gingivitis

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4
Q

what does a pulp polyp indicate

A

caries has reached pulp

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5
Q

how to detect caries

A
  • visual inspection
  • tactile inspection
  • radiographs
  • transillumination
  • floss shreds when between teeth (but may also be due to restorations)
  • orthodontic separators
  • electrical conductance (variable)
  • detection dyes (not very useful)
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6
Q

how to conduct visual inspection

A

tooth must be dry, lighted, magnified

look for variations, opacities, shadows, frank cavitation

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7
Q

what is used for tactile inspection

A

number 9 probe

briault probe

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8
Q

limitations of radiographs for caries

A

no indication of progression- if enamel caries is arrested and pt brushes well, no need to restore)
2D image

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9
Q

how to use orthodontic separators

A

put between teeth
leave for 1 week
use impression material

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10
Q

Blacks classification index

A

I: occlusal
II: occlusal and interproximal (posterior)
III: interproximal anterior
IV: interproximal and incisal edge anterior
V:crown-root
VI: cusp tip caries

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11
Q

ICDAS

A

0: sound tooth surface
1: first visual change in dry enamel
2: distinct change in wet enamel
3: localised enamel breakdown
4: dark shadow of dentine breakdown (with or without enamel breakdown)
5: distinct cavity with visible dentine
6: extensive distinct cavity with visible dentine

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12
Q

Practical classification of proximal caries

A

0: sound on bitewing
1: radiolucency confined to enamel
2: radiolucency in enamel up to enamel-dentine junction
3: radiolucency in enamel and outer half of dentine
4: radiolucency in enamel and reaching to inner half of dentine

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13
Q

Evans et al criteria for scoring bitewing radiographs

A

C0: no radiolucency recorded
C1: radiolucency in outer 1/2 of enamel
C2: radiolucency to inner 1/2 of enamel, maybe ADJ
C3: radiolucency just beyond ADJ
C4: radiolucency evident within outer 1/3 of dentine
C5: radiolucency extends to inner 1/3 of dentine, may reach pulp

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14
Q

what to do about each classification of Evans et al criteria for scoring bitewing radiographs

A

C1-3: topical fluoride and monitor
C4: consider in relation to pt caries risk status
(high –> restore, topical fluoride, monitor)
(low/medium –> restore if radiolucency fully in to 1/3 dentine or if separation confirms cavitation, other apply topical fluoride and monitor)
C5: restore, almost certain cavity breached ADJ

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15
Q

in what people are anterior caries common

A

(generally rarer than posterior caries)

  • mouth breather
  • exposed root surface
  • substance abusers
  • reduced manual dexterity
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16
Q

flowchart on principles in treatment planning for caries management

A

**

17
Q

4 factors in clinical decision making surrounding caries

A

diagnosis
prognosis
treatment options
preventive regime

18
Q

how extensive is caries if there is a white spot lesion?

A

50% of enamel

19
Q

define dental caries

A

localised destruction of dental hard tissues by acidic by-products of bacterial fermentation of dietary carbohydrates

20
Q

site & stage classification of Caries

A

site 1: pits, fissures and enamel defects on occlusal or other smooth surface
site 2: interproximal surfaces in relation to contact areas of anterior and posterior teeth
site 3: cervical 1/3 of all teeth and any exposed root surfaces

stage 0: initial lesion eg white spot
stage 1: minimal surface cavitation, dentine involvement
stage 2: moderate dentine involvement
stage 3: enlarged beyond moderate eg cusp and incisal edges with breakdown
stage 4: extensive caries with loss of cusp or incisal edges

21
Q

3 aims of emergency caries treatment

A
  • relieve pain
  • eliminate infection
  • initial trauma treatment
22
Q

4 factors in assessment of risk factors

A
  • pathogenic factors
  • protective factors
  • demineralisation
  • remineralisation
23
Q

factors influencing risk status of pts

A
  • carious lesions number, location, size, type
  • previous caries
  • diet content and freq
  • saliva flow and function
  • general health and medications
  • plaque control
  • plaque retentive factors
  • manual dexterity
  • tooth brushing technique and freq
24
Q

when may quadrant excavation be indicated

A

when there’s a vast number of carious lesions

25
Q

when may pulpal extirpation be indicated

A

to alleviate pain of pulpitis or acute periapical periodontitis –> stabilise tooth in short-term prior to definitive treatment following stabilisation of entire dentition

26
Q

how to perform pulpal extirpation

A
  • remove pulp
  • initial canal instrumentation
  • place non-setting calcium hydroxide
  • restore with temp restoration

Restorative (5 decks)

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