Ramer M S, Gerhardt D E, McNally K
Department of Restorative Dentistry, Baltimore College of Dental Surgery, MD.
J Prosthodont. 1993 Sep;2(3):156-8. doi: 10.1111/j.1532-849x.1993.tb00400.x.
Irreversible hydrocolloid is capable of resisting contamination by viruses and saliva when the disinfectant iodine or the disinfectant chlorhexidine is added to the water being used to mix the material. This study investigates the accuracy of alginate impressions made with water to which either of the two disinfectants has been added.
A total of 30 casts were made from an impression of a master cast. Ten impressions were made using water according to the manufacturer's instructions, ten were made using water to which iodine had been added, and ten were made using water to which chlorhexidine had been added. A measuring microscope was used to measure three different dimensions on each cast. Each measurement was repeated three times, and the average was used to compute the mean and standard deviation for each measured dimension. The data were statistically evaluated using a one-way analysis of variance.
There was no statistical difference in the accuracy of irreversible hydrocolloid impressions mixed with water or with either of two disinfectant solutions.
Accurate casts can be obtained when either of the two disinfectants are incorporated into the alginate impression material.
当将消毒剂碘或消毒剂洗必泰添加到用于混合材料的水中时，不可逆水胶体能够抵抗病毒和唾液的污染。本研究调查了添加了两种消毒剂之一的水制成的藻酸盐印模的准确性。
从母模的印模制作了总共30个铸型。按照制造商的说明，使用水制作了10个印模，使用添加了碘的水制作了10个印模，使用添加了洗必泰的水制作了10个印模。使用测量显微镜在每个铸型上测量三个不同的尺寸。每个测量重复三次，并使用平均值来计算每个测量尺寸的均值和标准差。使用单向方差分析对数据进行统计学评估。
与水或两种消毒溶液之一混合的不可逆水胶体印模的准确性没有统计学差异。
当将两种消毒剂之一加入藻酸盐印模材料中时，可以获得准确的铸型。
