DM - Ceramic tradenames Flashcards
what is a porcelain jacket crown? and its preps
no longer made
feldspathic porcelain with added alumina
1-2mm tooth reduction
shoulder all round margin
what is a dentine bonded crown?
full coverage restoration luted to underlying tooth structure via a dentine bond and resin composite luting cement
what is a coping?
the supporting layer of a crown
what are the copings of vita crowns made of?
slurry of alumina, alumina with magnesium, or alumina and zirconia
what types of ceramics can be used with the hot pressed/ injection moulded lost wax technique?
leucite re-enforced glass ceramics (IPS empress)
lithium disilicate glass ceramics (IPS empress 2 and E-max)
what does CAD-CAM produce?
a coping which is then veneered with a feldspathic porcelain
- implants
what type of porcelain is used for a dentine bonded crown?
high alumina porcelain
on
feldspathic porcelain
what is the use of high alumina porcelain?
to support and strengthen feldspathic porcelain for dentine bonded crowns
can be used to opaque metals substructures for aesthetics
what is the use of feldspathic porcelain?
covering high alumina porcelain in dentine bonded crowns and opaque ceramic layers of MCCs
and covering zirconia frameworks
give an example of lithium disilicate glass ceramic?
Emax
what are the properties of feldspathic porcelain?
aesthetic and etchable but lacks strength until cemented with composite
what are the properties of lithium disilicate glass ceramics?
aesthetic
high strength
etchable
what are lithium disilicate glass ceramics used for?
veneers
inlays/onlays
crown
covering zirconia frameworks
what type of ceramic is zirconia?
polycrystalline
what are properties of zirconia?
not etchable
high strength
not aesthetic
what are uses of zirconia?
can be veneered with feldspathic porcelain or lithium disilicate glass
high strength coping to replace the use of gold crowns
give example of zirconia ceramics?
3m ESPE
VIta inceram
why is zirconia sintered?
hardening and strengthening
cant etch or silanate it
what reductions are necessary for prepping a zirconia crown?
1mm axial
1.5mm incisal/ occlusal
what are the 2 types of composite ceramics used in DDH?
ceromeric - porcelain filled composite
milled composite - CADCAM for inlays/ onlays
what are the 6 materials for tooth coloured crowns?
feldspathic porcelain
lithium disilicate ceramic
all polycrystalline ceramic
glass (leucite reenforced)
ceromeric crowns
composite crowns
how can tooth coloured crowns be manufactured?
addition of a porcelain slurry
injected moulded/ pressed/ casted
CAD CAM
