Owen C P
J Oral Rehabil. 1986 Mar;13(2):147-62. doi: 10.1111/j.1365-2842.1986.tb00647.x.
Part I of this study considered the ability of alginate and gypsum combinations to reproduce a line on a test block. Part II describes a refined discriminatory procedure in the evaluation of the compatible combinations. Statistical analysis showed this procedure to be consistent, and that it could be expected to be repeatable. On the basis of this analysis, it was found that one alginate was clearly superior to all others, and that it was possible to distinguish a further group of combinations within the group that reproduced the 0.050 mm line. Surface treatment of the alginates by fixing solutions showed that none of the treated materials could be improved to the extent of equating them with the best of the naturally compatible combinations. It is recommended that manufacturers pay more strict adherence to the requirements of the ISO Standard with regard to the availability and recommendation of suitable compatible gypsum products, and also that perhaps the actual Standard should be modified to be more realistic in its demands, and more discriminatory in its evaluation procedure.
本研究的第一部分探讨了藻酸盐和石膏组合在测试块上重现线条的能力。第二部分描述了在评估兼容组合时一种改进的鉴别程序。统计分析表明该程序具有一致性，并且有望可重复。基于此分析，发现一种藻酸盐明显优于其他所有藻酸盐，并且在能够重现0.050毫米线条的组合组中还可以区分出另一组组合。用固定溶液对藻酸盐进行表面处理表明，没有一种处理过的材料能改进到使其与最佳自然兼容组合相当的程度。建议制造商在合适的兼容石膏产品的可用性和推荐方面更严格地遵守ISO标准的要求，并且或许实际标准应该进行修改，使其要求更切合实际，评估程序更具鉴别力。
