合着用セメントの操作変動とその影響 : 第 2 報コンシステンシーにおよぼす混和方法の影響

概要

論文の詳細を見る
On mixing the cement, the way to add the powder into the liquid is recommended by each manufacturer, collective adding at a time or sectional adding at a specified interval. Sometimes in the clinical practice, however, the powder is gradually added little by little as being mixed. The effects of the adding method of the powder into the liquid on the slurry consistency were examined in this report. In general the fluidity of the slurry decreased with increase in the mixing time. The changes were significantly different among the adding methods of the powder in the zinc phosphate cements. The sectional addition of the powder as recommended by the manufacturers seemed to be adequate for fluidity and the collective addition tended to make it smaller when the material was mixed longer. The polycarboxylate cements generally showed the largest fluidity and were less affected by the adding method and mixing time. The glassionomer cements were also less affected by the adding method. The materials blended with tannin and fluoride particles showed the smallest fluidity in any type. The gradual addition of the powder was found to be effective for getting sufficient fluidity in some materials. Even in many other materials it was favorable especially when they were mixed for a longer time within or over the recommended mixing time range.
九州歯科学会の論文
1994-10-25