From hemihydrate crystallisation to wax distortion and casting accuracy: the practical triad behind impressions, dies, and cast restorations
BDS · Dental Materials · TOPIC DM-02 Gypsum Products, Dental Waxes & Investments From hemihydrate crystallisation to wax distortion and casting accuracy: the practical triad behind impressions, dies, and cast restorations This topic links three highly testable laboratory foundations: gypsum (for impressions, casts, dies), waxes (for patterning and contour control), and investments (for converting a wax pattern into a castable mould). In exam settings, most errors come from confusing classifications and missing the process logic: gypsum controls accuracy of replica , wax con…
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