Which of the following statements is NOT true regarding zinc oxide eugenol cements?

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Base paste and accelerator paste are combined in equal amounts until the mixture is evenly colored.Higher temperature and humidity levels reduce the setting time.The mixture starts off fluid but thickens after 30 seconds of further mixing.Heat slows down the setting process while water speeds it up in zinc oxide eugenol cements.Both statements C and D are incorrect.

Explanation

Statement A is correct: equal portions of base and accelerator pastes are mixed until uniform in color. Statement B is true: increased temperature and humidity shorten the setting time. Statement C is false because the mixture initially appears thick and becomes more fluid with continued mixing. Statement D is incorrect since water accelerates and heat delays the setting reaction. Therefore, both C and D are false, making option E the correct choice.