Pure precision

The accuracy of fit and precision of an impression or precision are achieved by the immanent physical properties of an impression material, which are determined by parameters like dimensional accuracy, detail reproduction or hydrophilicity.

Dimensional accuracy describes the degree of three dimensional exactitude of a model in relation to the original form and is therefore a measure for precision.

Flexitime Monophase showed with a value of –0,001 % in this study the smallest dimensional change and therefore the most exact dimensional accuracy.
_{Source: Piwowarczyk, A.,Ottl, P., Büchler, A., Lauer, H.-Ch., Hoffmann, A.: In Vitro Study on the Dimensional Accuracy of Selected Materials for Monophase Elastic Impression Making. Int J Prosthodont 2002; 15: 168–174, Fig. 4}

Detail reproduction is the ability of an impression material to replicate details on the surface of an object and is necessary to achieve good marginal fit of the final restoration. Flexitime materials reproduce a line of far below 20 μm in width. Sharp!

Microscopic appearance (x 20 magnification) of representative Flexitime Correct Flow impression surfaces from airdried (A) and wet (B) dentin. Grinding scratches produced during preparation of dentin are readily seen on both impressions.

„Surface detail reproduction from prepared dentin with Flexitime (...) is high and very satisfactory.“
_{Source: Kanehira, M., Finger, W.J., Komatsu, M.: Surface detail reproduction with new elastomeric dental impression materials. Quintessence Int 2007; 38:479-488.}

Hydrophilicity describes a material’s affinity to water. This property improves a material’s wettability in the moist intraoral environment and creates smooth surfaces on the model. However, immanent hydrophilic materials also absorb water, which may lead to moisture expansion and dimensional instability. Flexitime materials are hydroactive – they feature optimal wettability without absorption of water and stay dimensionally stable.