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YR 3 - CSB > Crown Fitting and Cementation - Luting Cement Selection > Flashcards

Crown Fitting and Cementation - Luting Cement Selection Flashcards

1
Q

what is the luting cement?

A

the interface between cast restoration and the tooth

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2
Q

what 3 factors determine which cement you may use?

A
  • how much adhesion is required
  • whether aesthetics is important
  • if you want to remove the restoration
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3
Q

give ideal properties of the cement.

A
  1. prevents microleakage
  2. mechanical properties
  3. biocompatible
  4. easy to use
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4
Q

why is microleakage bad? (4)

A
  • aesthetics damages
  • increase chance of secondary caries
  • can become sensitive
  • pulpal damage
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5
Q

describe what is meant by good mechanical properties

A
  1. high compressive strength
  2. low solubility - not to degrade
  3. retentive
  4. low film thickness
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6
Q

why must the cement be biocompatible?

A
  • not harmful to pulp
  • not harmful to gingivae
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7
Q

how can a cement be easy to use?

A
  • good working time
  • easy to clean up excess
  • if it can be removed if necessary
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8
Q

give the 3 types of cements that may be used.

A

Traditional
Glass Ionomer Cement
Resin Cement

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9
Q

give the 2 types of traditional cements.

A

zinc phosphate
zinc polycarboxylate

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10
Q

give the 2 types of GIC’s

A

traditional
resin modified

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11
Q

give the 2 types of resin cements

A

multi-step adhesives
simplified and all in one adhesives

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12
Q

what type of cement is zinc phosphate? give 4 good properties and 2 bad properties

A

traditional cement

  1. long success
  2. high compressive strength
  3. low film thickness
  4. 5 mins working time
  5. macro-mechanical retention - not adhesive
  6. highly soluble
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13
Q

give 3 indications of which zinc phosphate - traditional cement would be used? zinc pocbate

A

cast post
full crown
conventional bridge

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14
Q

what type of cement is zinc polycarboxylate? give 4 good properties and 1 bad property

A

traditional cement

  1. good compressive strength
  2. low film thickness
  3. chemical adhesion to tooth
  4. releases fluoride
  5. highly soluble
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15
Q

give 4 indications of which zinc polycarboxylate - traditional cement, may be used.

A
  • full crown
  • conventional bridge
  • inlays/onlays
  • temporary filling material
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16
Q

what type of cement is RMGIC? give pros and cons

A

GIC

  1. high compressive strength
  2. low film thickness
  3. chemical adhesion to teeth and base metals
  4. releases fluoride
  5. low solubility
  6. requires dentine conditioner
17
Q

what is dentine conditioner?

A

citric acid - poly acrylic acid solution

  • removes the smear layer to increase the bond between GIC and tooth
18
Q

give the indications for RMGIC.

A
  • full crown
  • conventional bridges
  • inlays/onlays
19
Q

what type of cement is Resin Adhesive Multi Step? what are its 5 components?

A
  • acid etch
  • paste A and B
  • liquid A and B
  • metal and ceramic primer
  • oxyguard
20
Q

give 6 properties of R-A-MS

A

resin cement

  • dual cure resin composite system
  • high bond strength
  • high compressive strenght
  • low film thickness
  • releases fluoride
  • low solubility
21
Q

what are the indications to R-A-MS?

A

full crown
conventional bridges
inlays/onlays
RRB
veneers
posts
bonded amalgam

22
Q

what type of cement is Resin-Adhesive-Simplified? what are the 2 components?

A

resin cement

  • scotch bond universal
  • rely-x ultimate cement
23
Q

give 6 properties of resin adhesive simplified.

A
  • self adhesive dual-cure resin composite
  • high bond strenght to tooth and metal alloys
  • high compressive strength
  • low film thickness
  • low solubility
  • built in metal and ceramic primers
23
Q

give indications of resin-adhesive simplified

A

full crown
conventional bridges
inlays/onlays
RBB
veneers
posts

24
Q

what is the only different indication you get from resin adhesive multi system vs resin adhesive simplified?

A

multi system bonds to amalgam

25
Q

what cement may you want to use for a FVC or MCC crown, that is more than 3mm tall and adequate taper?

A

RGMIC - fuji plus

26
Q

what cement may you want to use for a prep that isn’t retentive? short crown or inlay/onlay?

A

adhesive resin cement

  • panavia or rely-x ultimate
27
Q

what cement may be ideal for a RBB

A

adhesive resin cement

  • panavia or rely-x ultimate
28
Q

what cement may be ideal for a fibre post?

A

adhesive resin cement

rely-x ultimate

29
Q

what cement may be best for a cast metal post? and why?

A

traditional cement
- zinc phosphate

can be removed easily to re-endo

YR 3 - CSB (38 decks)

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