27: Provisional (temporary) dental cements

27

Provisional (temporary) dental cements

Figure 27.1 Provisional restoration in single quadrant impression. (Courtesy of Dentsply International.)

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Figure 27.2 Loading Integrity® provisional restoration with provisional dental cement, prior to luting onto prepared tooth. (Courtesy of Dentsply International.)

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Figure 27.3 Setting reaction of zinc oxide–eugenol.

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Figure 27.4 Dispensed paste-paste provisional cement. (Courtesy of Dr. Karen Hallisey.)

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Box 27.1 Desirable properties of provisional cements
Biocompatibility with hard and soft tissues
Easy dispensing, mixing, and application
Adequate working and setting times
Good retention
Easy removal of excess cement from the external and internal restoration surfaces
Easy removal of the restoration without damage to hard and soft tissues
Minimal or no reaction with the restorative material
No interference with adhesion of a final cement
Good shelf life

Table 27.1 Properties of provisional dental cements

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Provisional or temporary cements are used for luting of provisional indirect restorations, including crowns, fixed partial dentures (FPDs), inlays, and onlays, as well as for temporary cementation of definitive (final) restorations. They are also recommended for the cementation of crowns and FPDs on implants. Desirable properties of provisional cements are summarized in Box 27.1. Provisional cements are also used for temporary filling of the access opening between root canal treatments, as interim restorations on implants, and during nonvital tooth bleaching. Typical clinical use of a provisional cement is shown in

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Jan 1, 2015 | Posted by in Dental Materials | Comments Off on 27: Provisional (temporary) dental cements
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