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Flashcards in Linings and bases Deck (23):
1

what is the powder re. phosphoric acid based cements?

zinc oxide +other metallic oxides

2

what is the liquid re/ phosphoric acid based cements?

aqueous solution of phosphoric acid with buffers

3

Where does the setting reaction occur re. phosphoric acid based cements?

surface of powder

4

what kind of setting reaction happens re. phosphoric acid based cements?

rapid
exothermic

5

what is mixing technique re. phosphoric acids based cements?

cool glass slab

6

why always replace cap on liquid?

prevents crystalisation

7

what properties have phosphoric acid based cements?

low ph and mw- highly irritant
thermal and electrical insulator
strength to withstand condensation
radiopaque
non obtundant
no adhesive- no coronal seal

8

what are variants of phosphoric based cements?

silicophosphate cements
copper cements

9

how is zinc oxide euganol set?

by chelation

10

what is powder re. zinc oxide euganol cements?

zinc oxide
hydrogenated resin/polystyrene
accelerator- zinc acetate

11

what is zinc oxide euganol incompatible with?

resin composites

12

what are properties of zinc oxide euganol cements?

benficial irritancy- re reactionary dentine
bacteriocidal
insulator
withstands condensation
obtundant
non adhesive- no coronal seal

13

What is a derivative of z.o euganol?

ortho ethoxy benzoic- EBA cements

14

What are the two paste in calcium hydroxide cements?

1- glycol salicylate
2- zinc oxide with calcium hydroxide

15

what are properties of calcium hydroxide cements?

insufficient strength re. condensation
non adhesive
radiopaque
beneficial irritant

16

What is the powder re. polycarboxylate cements?

zinc oxide

17

what is the liquid re. polycarboxylate cements?

polyacrylic acid aqeous solution

18

what are poroperties of polycarboxylate cements?

bond to stainless steel
mildy irritant
bacteriostatic
insulator
strength
adhesive
non obtudant

19

what is GI & RMGIC?

vitrebond

20

what is the powder re. GI?

ion leachable fluroaluminosilicate glass with photosensitiser

21

what is the liquid re GI?

modified polyacrylic acid

22

What is a composite bulk fill?

SDR- smart dentine replacement

23

what are properties of SDR?

delayed/ reduced shrinkage
cure up to 4mm
no need for liner?