Dental CementsDA 122 Dental Materials

PurposeCategory of materials used to prepare the

teeth for restorative materialsMixed at chairside by the DA, at direction of

the dentistDA responsible for maintaining materials and

mixing equipmentEach type of material may have a variety of

uses or consistencies

Supplied as:Powder/liquid kitsTwo-paste systems (base and catalyst)CapsuleDispensing syringe

Most mixed manually but some come in capsules and are mixed mechanically

Powder + liquid

Two-paste System

Capsules

Amalgamator for Capsules

Liquid syringe

ConsistenciesPrecise ratios used to get specific consistency

Range from liquid solution, luting consistency, and putty consistency

Luting consistency

Putty Consistency

Setting/curingSelf-curing: chemical reaction

between two materialsLight cured: require a special curing

light

Dual-cured: combine self-curing properties and light-curing techniques

Curing Light

TerminologyLuting: bonding or cementing together

inlays, onlays, crowns, bridgesPermanent luting cement: long-term

cementing agentTemporary luting cement: short-term

cementing agentIntermediate luting cement: lasts 6-12

months

Terminology (continued)Liner: material placed in a thin layer on

walls and floor of cavity preparation; protects pulp from bacteria and irritants

Base: putty or thick layer between tooth and restoration; protects pulp from chemical irritation, temperature changes, electrical protection, mechanical injury

Liner, Base, Varnish

Terminology (continued)Sedative or palliative effect: soothing effect

on a tooth; may relieve pain but does NOT cure the problem

Armamentarium for Dental CementsMixing pad or slabCement kitCement SpatulaPlastics Filling Instrument Gauze Clean-up supplies

Armamentarium

Common Dental CementsZinc phosphate (ZnP)

Zinc Oxide Eugenol (ZOE)

Polycarboxylate

Glass Ionomer• Copyright 2012 Porter & Chester Institute, Inc. All rights reserved