Shannon I L
Am J Orthod. 1980 Dec;78(6):640-5. doi: 10.1016/0002-9416(80)90203-1.
A laboratory study was carried out to evaluate the effectiveness of NaF and SnF2, when incorporated into zinc oxyphosphate cement, in reducing the solubility and increasing the microhardness of human enamel. The control cement contained no added fluoride, and the test cements were prepared to contain fluoride concentrations of either 1,000, 2,000, or 4,000 ppm from each of the two test fluorides. SnF2-containing cement provided significantly (P < .01) greater solubility reduction at all three concentrations than did NaF cement. SnF2 was also more effective than NaF in rehardening enamel surfaces. SnF2 is thus much more effective than NaF when added to orthodontic cement. Current topical treatment literature, both laboratory and clinical, is in accord with this conclusion.
进行了一项实验室研究，以评估当将氟化钠（NaF）和氟化亚锡（SnF₂）掺入磷酸锌水门汀时，在降低人牙釉质溶解性和提高其显微硬度方面的有效性。对照水门汀未添加氟化物，而测试水门汀的制备使其含有来自两种测试氟化物中每一种的浓度为1000、2000或4000 ppm的氟化物。在所有三种浓度下，含SnF₂的水门汀比含NaF的水门汀在降低溶解性方面显著更有效（P <.01）。SnF₂在使牙釉质表面再硬化方面也比NaF更有效。因此，当添加到正畸水门汀中时，SnF₂比NaF有效得多。当前的局部治疗文献，包括实验室和临床文献，均与这一结论一致。
