Brännström M, Nyborg H
J Am Dent Assoc. 1977 Feb;94(2):308-10. doi: 10.14219/jada.archive.1977.0296.
The purpose of the present investigation was to compare histologically pulpal reactions beneath inlays cemented with either a zinc phosphate or a polycarboxylate cement. No inflammatory reaction was seen beneath any of the 39 deep cavity preparations in teeth without pulpal lesions and with an inlay cemented with polycarboxylate cement. In the contralateral teeth, under 39 inlays cemented with zinc phosphate cement, an inflammatory reaction was seen beneath two cavity preparations. In one, bacteria were found on the floor of the preparation. On the basis of this result and the findings of our earlier investigations, it may be warranted to conclude that neither the polycarboxylate cement nor the zinc phosphate cement has any notable irritating effect on the pulp. If the irritation occurs after cementation of the restoration, it may be caused by debris containing bacteria and left behind on the prepared surfaces by bacterial growth from the surface of the tooth. The findings underline the importance of removing grinding debris and bacteria before cementation of the restoration.
本研究的目的是从组织学角度比较用磷酸锌水门汀或聚羧酸锌水门汀粘固嵌体后牙髓的反应。在39颗无牙髓病变且用聚羧酸锌水门汀粘固嵌体的深洞预备牙齿中，未观察到任何炎症反应。在对侧牙齿中，在用磷酸锌水门汀粘固的39颗嵌体下，在两个洞预备处观察到炎症反应。在其中一个洞预备处，在洞底发现了细菌。基于这一结果以及我们早期研究的发现，可以有理由得出结论，聚羧酸锌水门汀和磷酸锌水门汀对牙髓均无明显刺激作用。如果在修复体粘固后发生刺激，可能是由于含有细菌的碎屑在牙齿表面细菌生长后留在预备表面所致。这些发现强调了在粘固修复体之前清除磨削碎屑和细菌的重要性。
