QUANTIFICATION OF HYDROGEN GAS RELEASED FROM POLYVINYLSILOXANE IMPRESSION MATERIALS IN CONTACT WITH DIE STONE MATERIALS
QUANTIFICATION OF HYDROGEN GAS RELEASED FROM POLYVINYLSILOXANE IMPRESSION MATERIALS IN CONTACT WITH DIE STONE MATERIALS
复制标题
DOI：
10.1016/0300-5712(87)90069-8
复制
发表时间：
1987-06-01
影响因子：
4.4
通讯作者：
ANDERSON, RA
中科院分区：
文献类型：
--
作者：
MCCROSSON, J;SHARKEY, SW;ANDERSON, RA
在许多临床病例中，从聚乙烯基硅氧烷材料中获取的印模浇注的模石铸件的表面孔洞非常严重，以至于这些铸件毫无用处。经质谱仪鉴定，致病物质为印模材料释放出的氢气。临床观察现在得到了体外实验的支持，以确定每单位体积材料的氢释放量。给出了一系列加固型硅胶印模材料在混合后不同时间的结果。根据研究结果，建议制造商的浇注次数应被视为最小。
The surface porosity in die stone casts poured from impressions taken in polyvinylsiloxane materials has been found in many clinical cases to be so severe as to render these casts useless. The causative agent has been identified by mass spectrometry as hydrogen gas released from the impression material. The clinical observations are now supported by experimentsin vitroto determine the quantity of hydrogen released per unit volume of the material. Results are given for a comprehensive range of addition-cured silicone impression materials at various times after mixing. From the findings it is suggested that the manufacturers' pouring times be regarded as minimum.