Mount G J
Oper Dent. 1991 Jul-Aug;16(4):141-8.
This paper discusses the literature concerning the development of an ion-enriched layer between the glass-ionomer cement and tooth structure. Two restorations that had been in the oral cavity for considerable periods of time were used to confirm the existence of this layer. It is suggested that development of the layer is dependent on careful adherence to the recommendations for clinical placement, and recognition of the need to clean the surface of the cavity and to maintain the water balance of the cement. Having developed the ion-exchange layer, failure will be cohesive in the cement itself. Thus the strength of the union is dependent on the tensile strength of the cement.
本文讨论了有关在玻璃离子水门汀与牙齿结构之间形成富离子层的相关文献。使用了两个在口腔中存留了相当长时间的修复体来证实该层的存在。研究表明，该层的形成取决于严格遵循临床放置的建议，以及认识到清洁窝洞表面和维持水门汀水平衡的必要性。形成离子交换层后，破坏将发生在水门汀自身内部，因此结合强度取决于水门汀的拉伸强度。
