1. Cements Uses: Restorations
Types: permanent, intermediate, temporary, buildups
Luting agents
Types: permanent, temporary
Bases
Types: sedative, insulating/protective
Liners
Root canal sealants

2. Cements Types: Zinc Phosphate (ZnPO4) Zinc Polycarboxylate
Zinc oxide eugenol
Glass ionomer
Resin
Compomers

3. Zinc Phosphate Powder: Zinc oxide Magnesium oxide Liquid:
Brand name:
Mizzy Flecks
Uses:
Permanent cementation
Insulating base
Temporary restoration on non-vital teeth
Composition:
Powder:
Zinc oxide
Magnesium oxide
Liquid:
Phosphoric acid in water

4. Zinc Phosphate Disadvantages: Advantages: It’s strong
Poor thermal conductor
Great insulator
Prevents thermal shock to pulp
Disadvantages:
Highly acidic
Must seal dentinal tubules on vital teeth prior to usage

5. Zinc Phosphate Mixing:
Must be mixed on cool glass slab (higher temperature accelerates setting time)
Powder is added in small increments
Figure 8 spatulation helps to dissipate heat build up

6. Zinc Polycarboxylate/ Polyacrylate
Brand name: Durelon
Uses:
Base
Permanent cementation
Orthodontic bands
Temporary cementation (change proportioning)
 Advantage: 1st adhesive material developed for use in dentistry.
It bonds to tooth structure *(chelation)
This adhesion results in very little leakage
Chelation: a chemical reaction between two substances which bond together to form an adhesive bonds.

7. Zinc Polycarboxylate/ Polyacrylate
Composition:
Powder:
Zinc oxide
Stannic oxide
Stannous fluoride
Liquid:
Polyacrylic acid
water
During mixing, the cement becomes highly acidic, however during the setting, the acid is neutralized.
Liquid portion is very viscous
Always hold the bottle perpendicular to the paper pad to ensure independent drops
The liquid should not be dispensed until one is ready to mix, as water can evaporate, changing the reactivity and the cement properties.
Cleanup spatula immediately because it bonds to stainless steel

8. Glass Ionomer Brand names: Ketac, GC, Fuji Uses: Liner Base
Permanent Restoration
Build-up material
Luting
Sealants

9. Glass Ionomer Advantages: Chemical adhesion to dentin and enamel
Release fluoride over time, which inhibits recurrent decay, greater, amounts at the beginning and dissipates over time.
Very versatile material
Biologically kind to the tissue and pulp
Capable of sealing dentin
Good choice for Class V lesions for patients with a high caries risk
Low solubility after the setting reaction is complete
They bond to stainless steel and alloys for ceramometal crowns

10. Glass Ionomer Disadvantages: High initial solubility in oral fluids
Poor wear resistance in high stress areas

11. Glass Ionomer Supplied: Self-cured (chemical cured)(auto-cured)
Light-cured
Powder/ liquid
Preproportioned capsules
Reinforced with silver
Reinforced with resin (Compomer)

12. Glass Ionomer Composition: Powder
silicate glass containing calcium, aluminum and fluorine
Liquid
polyacrylic acid and copolymer in water, tartaric acid- regulates working and setting time
Handling:
Chemical cured materials must be handled properly:
Powder/ liquid ratio is mixed to viscous state
Placement and contouring must not be delayed or adhesion may be lost
Initial setting is susceptible to dehydration, action must be taken to prevent this. Generally a sealant is placed over setting material to protect surface.
Restorative material: Final polishing may need to be delayed 24 hours to allow the material to completely set.

13. Zinc Oxide Eugenol/ Non-Eugenol
Brand names:
IRM (Intermediate Restorative Material)
Tempbond/ Tempbond NE
Temrex
Uses:
Temporary luting
Temporary filling/Intermediate restoration
Sedative base/ palliative/obtundent  

14. Zinc Oxide Eugenol/ Non-eugenol
Powder:
majority zinc oxide
rosin-an natural organic added to reinforce material and make it less brittle
zinc acetate accelerates setting time
Liquid:
majority eugenol / caprylic acid
Reinforced ZOE liquid- contain 65% orthoethoxybenzoic acid and 35 % eugenol (results in cement with increased strength
Supplied:
Powder/liquid
Paste/paste (bulk or unidose)
Preproportioned capsules
Mixed:
Glass or paper pad
Amalgamator
Consistency:
Luting: 1” off pad
Base: putty rolled in a ball

15. Resin Cements Are basically fluid composites Composed of:
Resin may be bis-GMA or urethane dimethacrylates
Fillers- usually are barium glasses, some silica particles; fillers make up 30 or 60 % by weight of cement
Uses:
Luting brackets during orthodontic treatment (tx)
Luting Maryland bridges
Luting porcelain onlays, inlays and crowns
Luting composite onlays, inlays and crowns
Luting porcelain veneers
Luting porcelain-metal crowns

16. Resin Cement Disadvantages: Supplied: Self cure Light cure Dual cure
Material does not adhere to tooth surface therefore an etching and dentin adhesive procedure must be done
Greater film thickness, care must be taken not to overload your crown
Irritating to the pulp
Excess cement must be removed immediately after cementation or it may damage the seal of cement when removed
Supplied:
Self cure
Light cure
Dual cure
Advantages:
Bonds to etched enamel and dentin
Insoluble in oral fluids
Tougher than most cements