Nicholson J W, Czarnecka B, Limanowska-Shaw H
Department of Dental Biomaterials Science, The Dental Institute, King's College School of Medicine and Dentistry, London, UK.
Biomaterials. 1999 Jan;20(2):155-8. doi: 10.1016/s0142-9612(98)00153-7.
Glass-ionomer cements, both self-hardening and resin-modified, have been shown to increase the pH of lactic acid solutions in which they are stored. Similar results have been obtained for a zinc phosphate and a zinc polycarboxylate cement. The pH was increased over a period of 7 days by between 1.54 and 2.65 pH units from an initial value of pH of 2.60, depending on the cement. It is concluded that, as a result of this ability to neutralize surrounding aqueous solutions, these materials may have the beneficial effect in vivo of inhibiting caries development. In the case of glass-ionomers, this mechanism might complement that of fluoride release.
已证实，自凝型和树脂改性型玻璃离子水门汀均能提高其储存乳酸溶液的pH值。磷酸锌水门汀和聚羧酸锌水门汀也得到了类似结果。根据水门汀的不同，在7天时间内pH值从初始值2.60提高了1.54至2.65个pH单位。由此得出结论，由于这些材料具有中和周围水溶液的能力，它们在体内可能具有抑制龋齿发展的有益作用。对于玻璃离子水门汀而言，这种机制可能是对氟释放机制的补充。
