Physical Properties of Temporary Cements Indicated for Cementing Implant-retained Abutments

Objective: The purpose of this study was to compare the physical properties of temporary cements and implant cements, all of which are indicated for cementing fixed restorations on implant-retained abutments.

The most desirable parameters of "ideal" Implant cement are: secure retention, retrievability when needed, low solubility, high marginal seal and high elasticity.

It will also be desirable if the cement will compensate with its high elasticity for the missing periodontal ligament. This can reduce the phenomenon of implant abutment screws loosening up under the high occlusal forces.

In this study we measured some of the most indicative parameters in order to estimate how close are the tested cements to the so-called "ideal" cement. Methods:  2 temporary cements: SensiTemp Resin (Sultan Chemist), TNE (Temrex) and 2 Implant cements: Premier Implant Cement (Premier Dental), Cem-Implant (BJM) were tested under the same conditions. A variety of tests were used to evaluate the cements properties: flexural strength [FS](ISO 4049), water sorption [WS] and solubility [SL](ISO 4049), shear bond strength [SBS] (ISO/TS11405). The experimental results were analyzed statistically (N=10) by ANOVA (p<0.05). Results: Water sorption for all groups was found to be within ISO 4049 specification.

Adhesion and water sorption results correlated with elasticity results providing possible secure retention of restorations on implant-retained abutments.