Smith D C, Ruse N D
J Am Dent Assoc. 1986 May;112(5):654-7. doi: 10.14219/jada.archive.1986.0069.
Recent findings regarding pulp sensitivity to luting glass ionomer cements have aroused controversy as to the cause of the problem. Contributing factors may include chemical irritation from the material and leakage. The pH changes during setting were determined for three glass ionomer cements, a zinc phosphate cement, and a polycarboxylate cement. The data showed that the glass ionomer luting cements may show lower pH values for longer times than the other cements. This initial acidity, involving a prolonged period at pH below 3, coupled with cytotoxicity of other ingredients, may lead to damaging effects on the pulp when manipulation of the material and tooth preparation and cementation procedures are less than ideal.
最近关于牙髓对玻璃离子水门汀粘结剂敏感性的研究结果引发了关于该问题成因的争议。促成因素可能包括材料的化学刺激和渗漏。测定了三种玻璃离子水门汀、一种磷酸锌水门汀和一种聚羧酸锌水门汀在凝固过程中的pH变化。数据表明，玻璃离子粘结水门汀在较长时间内的pH值可能低于其他水门汀。这种初始酸度，即在pH值低于3的情况下持续较长时间，再加上其他成分的细胞毒性，当材料操作、牙齿预备和粘结程序不够理想时，可能会对牙髓产生损害作用。
