Dental Cements

Question 1

Types of CEMENTS
(6)

Answer 1

▸ Zinc Oxide (Eugenol)
▸ Zinc Phosphate
▸ Zinc Polycarboxylate
▸ Glass Ionomer
▸ Resin Modified Glass ionomer
▸ Resin cements

Question 2

Zinc Oxide Eugenol
(4)

Answer 2

▸ Interim cement (low strength) – interim
restorative material
▸ Eugenol has sedative effects to the pulp
(anti-inflammatory, analgetic)
▸ Eugenol inhibits polymerization of resin
▸ Market Name: Temp-Bond

Question 3

Zinc Phoshpate
(5)

Answer 3

▸ Long history of use as a definitive cement
▸ Phosphoric acid can be an irritant to the pulp
(mixed on a chilled glass slab to minimize
exothermic reaction)
▸ Soluble
▸ Inexpensive
▸ Radiopaque

Question 4

Zinc Polycarboxylate
(5)

Answer 4

▸ Interim cement (higher strength
compared to ZOE) due to solubility
▸ Chelation (bonds to Ca ions)
▸ Contains polyacrylic acid
▸ Minimal pulpal irritation
▸ Market Names: Durelon®, Ultratemp

Question 5

Glass Ionomer
(4)

Answer 5

▸ Definitive cement (also used as restorative material)
▸ Adheres to dentin and cementum (polyacrylic acid)
▸ Fluoride release
▸ Market Name: Fuji

Question 6

Resin Modified Glass Ionomer
(4)

Answer 6

▸ Higher strength and lower solubility (compared to GI)
▸ Should not be used with glass ceramics
▸ Can be used with Zr based ceramics
▸ Market Name: RelyX Luting ®
Resin Modified Glass Ionomer

Question 7

Resin Cements
(4)

Answer 7

Highest strength and bond to tooth structure and
some ceramic materials
▸ Light cure, Chemical cure, or Dual cure
▸ Light cure cements are more color stable than dual
cure cement
▸ Technique sensitive, expensive, can cause
sensitivity
Resin Cements

Question 8

▸ Zirconia
▸ Lithium disilicate (e.max)
▸ Feldspathic porcelain (veneers)

Answer 8

▸ RMGI or Resin cements
▸ Dual cure Resin cement
▸ Light cure Resin cement

Question 9

Try-in cements for

Answer 9

Veneers

Question 10

Internal surface of the restoration:
▸ Internal Surface –
▸ Silane treatment in internal surface to enhance the chemical bond between

Answer 10

Hydrofluoric Acid Etch (typically done by the lab) or use
Monobond Etch&Prime® (Ivoclar)

glass
ceramic/resin cement. Not required if Monobond Etch&Prime® (Ivoclar) is used.
Glass ceramic pre-cementation treatment

Question 11

Internal surface of the restoration:
▸ Adhesive promoting agent/Primer can be used and should contain —
▸ Airborne particle abrasion w. 50μm alumina particles at 1-2 Bar (30 psi) for — sec
DO NOT use diamond burs on intaglio surface for —

Answer 11

10-MDP
(methacryloyloxydecyl dihydrogen phosphate)
5-10
roughening