Lecture 9 - cements Flashcards
What are provisional luting agents?
bind restorations to teeth for SHORT periods of time
ex) Eugenol or non-eugenol containing (ZOE/ZnO) they are resin based
AKA multilink!
Two types of permanent luting agents:
non-adhesive
Adhesive
non-adhesive - traditional cements acts by filling aspace and binding adjacent surfaces
adhesive - chemically interacts with the surface of the tooth and or restoration
Luting agents brand names
Zinc phosphates - flecks
zinc oxide - tempbond (w/without eugenol)
polycarboxylate - durelon
glass ionomers - ketac-cem
resin modified GI’s - RELY X
Self etch/self bond resin cements - multilink
Zinc phosphate cement (FLECK’s)
good for implant cementation.
does not promote any bacterial growth like resin cement is susceptible too
polycarboxylate cement (Durelon)
similar to zinc phosphate cement but this has lower compressive strength
produces little heat when setting
long-term provisional
not-compatible with titanium
Glass ionomer cement (ketac Cem)
released fluoride
molecular bond of enamel and dention with material
cement radiopacity ensures good control
resin modified glass ionomer cement (rely X luting cement)
soluble until set, must isolate
biocompatibility
flouride release
moisture tolerance
easy to mix, easy cleanup, high fracture toughness
properties of RMGI
2 year shelf life
fluoride ion release
has HEMA releasing in It!!
HEMA can be allergic
resin cements
Dual cure*
self cure
light cure
dual cure - balance of adhesive retention, predictable curing, stable color and ease of clean up
Ex. Calibra. Ahesive used with this is OPTIBOND NT
6 min set/2 min working time
resin cements
Dual cure
self cure*
light cure
Self cure - aka MULTILINK
high radiopacity
needs an isolated working field to be effective. Do NOT used phosphoric acid with this material.
Working time 2 min, set time 5 min
resin cements
Dual cure
self cure
light cure*
Ex. Variolink Veneer
stable color
Clean surface of the restoration with water and air and then PHOSPHORIC acid for 15 sec.
