Wilson A D
J Dent Res. 1976 Sep-Oct;55(5):721-9. doi: 10.1177/00220345760550050401.
The specification test for solubility and disintegration is an essential screening test for the quality control of certain cement types. No cement fails it can be considered for use; however, the test has only a limited clinical significance because it does not give an indication of the stability of the fully hardened cement matrix either in oral fluids or water. Instead, it gives a measure of the content of the soluble reaction intermediate present in cements that are still hardening and where the matrix has not fully formed. The test relates, therefore, to early vulnerability to aqueous attack and hardening rate. The period of test is, in fact, an atypical one and the true extent of the erosion of the cement matrix is obscured by the presence of soluble reaction intermediates. Long-term extrapolations cannot be made and so test results for broadly satisfactory cements within a category cannot be used for valid comparisons of clinical excellence, and they can be used even less to compare different cement types with different setting reactions. For example, in general, the dental silicate cement has a higher solubility and distinegration figure than the zinc phosphate cement because it contains soluble sodium salt and hardens more slowly. However, it is more stable under oral conditiont an indication of the vulnerability of the forming matrix to attack. The test is not valid when applied to zinc oxide-eugenol cements because the products of decomposition are either virtually water-insoluble or volatile and therefore not measured under the conditions of the test. A method is suggested for overcoming this deficiency. The test needs to be supplemented by other tests done on fully hardened cements for longer periods of time and in mediums that can represent oral conditions. One example would be to stimulate acid conditions developed in stagnation areas. A total estimation of decomposition products, both soluble and insoluble, is called for rather than the determination of soluble materials only.
溶解度和崩解度的规范测试是某些水泥类型质量控制的重要筛选测试。任何未能通过该测试的水泥都不能考虑使用；然而，该测试的临床意义有限，因为它无法表明完全硬化的水泥基质在口腔液体或水中的稳定性。相反，它衡量的是仍在硬化且基质尚未完全形成的水泥中可溶性反应中间体的含量。因此，该测试与早期对水侵蚀的敏感性和硬化速率有关。实际上，测试期是非典型的，水泥基质侵蚀的真实程度被可溶性反应中间体的存在所掩盖。无法进行长期外推，因此同一类别中大致令人满意的水泥的测试结果不能用于有效的临床卓越性比较，更不能用于比较具有不同凝固反应的不同水泥类型。例如，一般来说，牙科硅酸盐水泥的溶解度和崩解度数值高于磷酸锌水泥，因为它含有可溶性钠盐且硬化较慢。然而，它在口腔条件下更稳定，这表明正在形成的基质容易受到侵蚀。该测试应用于氧化锌丁香酚水泥时无效，因为分解产物要么几乎不溶于水，要么易挥发，因此在测试条件下无法测量。建议采用一种方法来克服这一缺陷。该测试需要通过对完全硬化的水泥在更长时间和能够代表口腔条件的介质中进行的其他测试来补充。一个例子是模拟停滞区域产生的酸性条件。需要对可溶性和不溶性分解产物进行全面评估，而不仅仅是测定可溶性物质。
