Baumann M A, Klapper M
Klinik für Zahn-, Mund- und Kieferkrankheiten, Medizinische Fakultät, Johannes-Gutenberg-Universität, Mainz.
Schweiz Monatsschr Zahnmed. 1992;102(6):688-92.
Inhibited setting of addition silicones has been observed using latex gloves in the dental office. Therefore four addition silicones as well as four condensation silicones were mixed with seven latex gloves with different properties (sterility, powder, accelerator, inner layer). The masses were mixed with bare hands as a control and--additionally--with powdered hands. Condensation silicones stayed unaffected when put together in exact amounts, while some addition silicones showed nearly complete inhibition. Mixing the condensation silicones under the conditions of daily practice--one spoon of body plus a distinct amount of catalyst-resulted in hardness differences compared to using the exact dose. Nevertheless the resulting impressions were of satisfying quality. The powder-component (Bio-sorb, Surgikos) leads to an accelerated setting. The general dental practitioner/dental hygienist have to consider these aspects while choosing gloves and silicone putties for taking impressions.
在牙科诊所使用乳胶手套时,已观察到加成型硅橡胶的凝固受到抑制。因此,将四种加成型硅橡胶以及四种缩合型硅橡胶与七副具有不同特性(无菌性、粉末、促进剂、内层)的乳胶手套混合。将材料分别用裸手作为对照进行混合,另外还用戴有粉末的手进行混合。当精确混合时,缩合型硅橡胶不受影响,而一些加成型硅橡胶则几乎完全被抑制。在日常操作条件下(一勺基质加一定量催化剂)混合缩合型硅橡胶时,与使用精确剂量相比,会导致硬度差异。然而,最终的印模质量令人满意。粉末成分(生物吸附剂、外科硅胶)会导致凝固加速。普通牙科医生/牙科保健员在选择用于取印模的手套和硅橡胶腻子时必须考虑这些因素。