Expulsion force, surface pH, and porosity of encapsulated glass-ionomer cements mixed with a Rotomix device.

The aim of this study was to evaluate the Rotomix mixing device, used for mixing glass ionomer cements, in comparison with conventional mixing procedures including both hand and amalgamator methods. The properties examined were extrusion force, surface pH (indicating homogeneity), and porosity. The results indicated that the Rotomix device produced cement mixtures without compromising any of the examined properties relative to other mixing methods.