The factors of influencing the purification effect of calcium hydroxide slurry are analyzed and the measures of improving the purification of it are given.

Experiment Study and Mechanism Analysis of Ca(OH)_2 as the Retarder of High-Sulphur Coal;

Methods The paste powder of Tinidazole,Ca(OH)_2,Iodoform,mixed with Clove oil were used for one time treatment of root canal and compared with the using of regular root canal filling applied in many-time therapy.

Ca(OH)_2 Catalytic Gasification of Coal Humic Acid Experimental Study;

Study on the situ production of calcium hydroxide particle under the polyacrylamide solution;

Reaction behavior between calcium oxide or calcium hydroxide and aluminate solution with heavy caustic soda;

Development of a new colorific calcium hydroxide adsorbent;

CuO Added to the coal can improve the action of sulfur fixation of CaO, CaOH and CaCO 3, of which the improvement of Ca(OH) 2 was largest and the efficiency of sulfur fixation of Ca(OH) 2 added with CuO reached 83.

AIM:To compare the antimicrobial activity of Ca(OH) 2、Iodoform、FC and Vitapex to the bacteria in the root canal of human extracted teeth in vitro.

Methods Ac-cording to bacterial occurrence and clinical effect,40cases of infectious root canal of deciduous teeth disinfected with Ca(OH) 2 were investigated,the other40cases with traditional way of using FC and CP respectively,were used as the control.