Linings and Bases Flashcards
how are phosphoric acid based cements composed
P:L
powder - ZnO
liquid - aq sol phosphoric acid with buffers AlPO4
what is the setting ration light for phosphoric acid base cements
setting r at surface rapid exothermic incrementally
how are phos a cements irritant
low pH
high MW of parent acid
what are some other props of phos a cements
thermal and electrical insulator strength to withstand condensation radiopaque no obtundant effect non adhesive
what are the variants of phos a cements
silicophosphate and copper cements
what is the silicophosphte cement
powder - phos acid and buffer
liquid - ZnO and aluminosilicate glass
what sit he coper cements
liquid same as silicophosphate
powder - ZnO, black CuO
bactericidal
what are the ways of ZnO eugenol cements being composed
P:L or 2 pastes
what is the P:L of ZnO eugenol Cements
powder - ZnO + reinforced hydrogenated resin + accelerator
liquid - eugenol + olive oil
what is the setting of ZnO eugenol cements
chelation
what are the properties of reinforced ZnO eugenol cements
beneficial irritancy bactericidal thermal and electrical insulator radiopaque obtundant non adhesive
what are the 2 pastes used in calcium hydroxide cements
paste 1 - a glycol salicylate
paste 2 - ZnO with calcium hydroxide
what are the properties of calcium hydroxide cement
high pH bactericidal
thermal nd chemical insulator
radiopaque
non adhesive
what sit he comp of polycarboxylates
poder - ZnO
liquid - aq polyacrylic acid
what are the properties of polycraboxylates
acid base reaction acidic high MW fluoride = bacteriostatic insulator not obtundant adhesive
