The retention or restorations on prepared teeth is a major function of

are not cements but are used in conjunction with cements to provide pulp protection from irritants i.e. resin in a solvent

provide protection to the pulp from irritants or as pulp-capping agents; i.e. Ca (OH)2 (self & light-cured), GIC, ZOE

to coat the dentin; i.e. Ca (OH)2 in a suspension

principal powder component

gives strength

bismuth, silica

Zinc Phosphate Cement powder 4 compositions

Zinc Phosphate Cement Manipulation:

Properties Acidity Solubility and disintegration Retention

The cement shrinks much more when it is in contact with air than when it is under water. Thus the cement must not be allowed to dry out.

Commercial names of ZnPO4 cements 4

temporary cement, temporary filling material

permanent cementing or luting agent

Temp-bond, Tempak, Nogenol

IRM (Intermediate Restorative Material), Temrex, Extra, Fynal

Used for direct and indirect pulp capping and as a protective barrier beneath composite restorations

Manner of dispensing: 2-paste form / single paste (LC)

Calcium Hydroxide Cement

Calcium Hydroxide Cement

incorporated to improve cement strength; increase fracture toughness; increase wear resistance

P/L 1.6:1 Mixing time: 20 seconds until it has a mousse-like consistency Working time: 2.5 minutes Bond strength: 14 MPa

Hybrid GIC

does not need a cavity liner molecular weight of liquid is very high so that it cannot pass through tubules

highly acidic; needs a cavity liner to block acid

did not contribute to inflammation of gingival tissues.

tooth debris left in cavity, is removed before GIC is used. Use 50% citric acid apply for 15-30 seconds the wash with water then dry.

Functions of celluloid strip: 4

silicone grease painted on the surface to prevent moisture contamination.

Silicate Cements Factors that control setting time: All these will prolong the setting time 3

Final cementation or cast crowns and bridges 5

II.Temporary cementation of cast crowns and bridges or cementation of temporary restorations 2

High strength bases 4

Temporary fillings or to provide thermal insulation and mechanical support to teeth restored with other materials such as amalgam and gold. 4

provide protection to the pulp from irritants or as pulp-capping agents

Low strength bases or liners 3

Ca (OH)2 in a suspension

resin in a solvent

Addition of spherical amalgam alloy Type I GIC powder is called

Zinc Polycarboxylate Cements / Zinc Polyacrylate 5 Commercial Names