dental materials

Question 1

components of phosphoric cements?

Answer 1

powder of zinc oxide and other metallic oxides

l - aqueous sol of phosphoric acid cement with aluminium phosphate and zinc phosphate buffers

Question 2

properties of phosphoric cements?

Answer 2

low ph low mw = highly irritant
radiopaque
not obtundant, no coronal seal

Question 3

what is the components of zinc oxide eugenol cements?

Answer 3

l - eugenol and olive oil

p - zinc oxide and hydrogenated resin

Question 4

properties of zinc oxide?

Answer 4

beneficial irritancy
zinc = bacteriocidal and radiopaque
obtundant
not compatible with composite
no coronal seal

Question 5

constituents of calcium hydroxide?

Answer 5

paste 1 - glycol salicylate

paste 2 - zinx oxide and calcium hydroxide

Question 6

constituents of light activated calcium hydroxide?

Answer 6

VLC polymerisation of a modified methacrylate monomer - BISGMA.

Question 7

properties of calcium hydroxide?

Answer 7

high pH - beneficial irritancy and bacteriocidal
radiopaque
no seal
not strong

Question 8

constituents of Poly F?

Answer 8

p - zinc oxide

l - polyacryclic acid

Question 9

properties of Poly F?

Answer 9

low pH high MW - reduced penetration and mildly irritant to pulp

Question 10

constituents of vitrebond?

Answer 10

p - ion leachable glass of fluoroaluminasilicate glass and photosensitiser

Question 11

properties of vitrebond?

Answer 11

high mw - mild irritancy

f = bacterostatic