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MODULE 6 > DM - Ceramic tradenames > Flashcards

DM - Ceramic tradenames Flashcards

1
Q

what is a porcelain jacket crown? and its preps

A

no longer made
feldspathic porcelain with added alumina

1-2mm tooth reduction
shoulder all round margin

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2
Q

what is a dentine bonded crown?

A

full coverage restoration luted to underlying tooth structure via a dentine bond and resin composite luting cement

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3
Q

what is a coping?

A

the supporting layer of a crown

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4
Q

what are the copings of vita crowns made of?

A

slurry of alumina, alumina with magnesium, or alumina and zirconia

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5
Q

what types of ceramics can be used with the hot pressed/ injection moulded lost wax technique?

A

leucite re-enforced glass ceramics (IPS empress)
lithium disilicate glass ceramics (IPS empress 2 and E-max)

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6
Q

what does CAD-CAM produce?

A

a coping which is then veneered with a feldspathic porcelain
- implants

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7
Q

what type of porcelain is used for a dentine bonded crown?

A

high alumina porcelain
on
feldspathic porcelain

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8
Q

what is the use of high alumina porcelain?

A

to support and strengthen feldspathic porcelain for dentine bonded crowns

can be used to opaque metals substructures for aesthetics

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9
Q

what is the use of feldspathic porcelain?

A

covering high alumina porcelain in dentine bonded crowns and opaque ceramic layers of MCCs
and covering zirconia frameworks

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10
Q

give an example of lithium disilicate glass ceramic?

A

Emax

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11
Q

what are the properties of feldspathic porcelain?

A

aesthetic and etchable but lacks strength until cemented with composite

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12
Q

what are the properties of lithium disilicate glass ceramics?

A

aesthetic
high strength
etchable

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13
Q

what are lithium disilicate glass ceramics used for?

A

veneers
inlays/onlays
crown
covering zirconia frameworks

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14
Q

what type of ceramic is zirconia?

A

polycrystalline

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15
Q

what are properties of zirconia?

A

not etchable
high strength
not aesthetic

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16
Q

what are uses of zirconia?

A

can be veneered with feldspathic porcelain or lithium disilicate glass
high strength coping to replace the use of gold crowns

17
Q

give example of zirconia ceramics?

A

3m ESPE
VIta inceram

18
Q

why is zirconia sintered?

A

hardening and strengthening
cant etch or silanate it

19
Q

what reductions are necessary for prepping a zirconia crown?

A

1mm axial
1.5mm incisal/ occlusal

20
Q

what are the 2 types of composite ceramics used in DDH?

A

ceromeric - porcelain filled composite
milled composite - CADCAM for inlays/ onlays

21
Q

what are the 6 materials for tooth coloured crowns?

A

feldspathic porcelain
lithium disilicate ceramic
all polycrystalline ceramic
glass (leucite reenforced)
ceromeric crowns
composite crowns

22
Q

how can tooth coloured crowns be manufactured?

A

addition of a porcelain slurry
injected moulded/ pressed/ casted
CAD CAM

MODULE 6 (69 decks)

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