chapter 14 cements - · pdf filecavity varnish low-strength base/liner high-strength...
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Dental Cements
Jeffrey R. Smith, DMD
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Dental CementFew materials in dentistry are used as frequently as dental cements.
No single cement is universally acceptable and fulfills all applications.
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Uses of Dental CementsPulpal protection
Cavity varnish Low-strength base/liner
Luting, bonding, cementation
Restorations
Surgical dressings
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Pulpal ProtectionCavity varnish
Low-strength base/liner
High-strength base/liner
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Pulpal ProtectionBuildup
Mechanical support
Reinforces remaining tooth structure
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Luting, Bonding, CementationGood wettability
Thin film thickness
Low viscosity
Uses Permanent Temporary
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Orthodontic Bands and BracketsRetained for months, even years
Cements with fluoride often used
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RestorationsPermanent
Intermediate
Temporary/provisional
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Surgical DressingsProvide protection and support for the surgical site
Dispensed Chemical-cured Light-cured
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Properties of Dental CementsStrength
Solubility
Viscosity and film thickness
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Properties of Dental CementsBiocompatibility and anticariogenic properties
Retention and adhesion
Esthetics
Radiopacity
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ManipulationStorage
Mixing
Working and setting times
Self-etch and total-etch
Light-curing, self-curing/dual-curing
From Powers JM, Wataha JC: Dental Materials: Properties and Manipulation, ed 10, St. Louis, 2013, Mosby, p. 87.
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ManipulationLoading the restoration
Technique
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Manipulation (Cont.)Removal of excess cement
Must be removed Consistency
Cement-associated peri-implant disease
Cleanup, disinfection, and sterilization
Considerations during instrumentation
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Dental CementsZinc oxide eugenol
Composition Principle ingredient: Zinc oxide Eugenol
Properties pH of 7
Manipulation
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Dental Cements (Cont.)Zinc phosphate
Composition Principle ingredient: Zinc oxide Fluoride Phosphoric acid Water
Properties pH of 4.2
Manipulation
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Dental Cements (Cont.)Zinc polycarboxylate
Composition Principle ingredient: Zinc oxide Polyacrylic acid
Properties
Manipulation
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Dental Cements (Cont.)Glass ionomer cements
Composition Powder: Aluminum fluorosilicate glass Liquid: Polyacrylic acid copolymer in water
Properties
Manipulation
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Dental Cements (Cont.)Hybrid glass ionomer cements, also referred to as resin-modified glass ionomer cements (RMGIC)
Composition Aluminum fluorosilicate glass modified with resin Polyacrylic acid copolymer in water
Manipulation
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Dental Cements (Cont.)Resin-based cements (adhesive and self-adhesive resin)
Composition
Properties
Manipulation