Wesenberg G, Hals E
J Oral Rehabil. 1980 Jan;7(1):35-42. doi: 10.1111/j.1365-2842.1980.tb01461.x.
Glass ionomer cement (ASPA) was inserted in unconditioned class V cavities or in contact with polished ground surfaces of enamel and dentine in twelve teeth. Ground sections of all teeth were examined by microradiography, and four of the sections submitted to electron probe microanalysis. A narrow outer zone of increased radiopacity in the dentine walls was explained by a 5--10% increase of Ca and P. In some sections this zone covered a partly demineralized subsurface zone. The concentrations of F and Al in enamel and dentine were similar to or approximately 0.3% and 1.5%, respectively, decreasing to less than 0.1% at a distance of 16--80 microns (F) and 8--24 microns (A) from the surface. Both F and Al penetrated deeper into the dentine than into the enamel. Decreased Zn values, sometimes concomitant with increased Ca, P and Mg values, were in some instances observed in an outer narrow zone of the dentine walls. It is assumed that like silicate cement, glass ionomer cement must have anticariogenic properties, due to uptake of F and Al in cavity walls.
将玻璃离子水门汀（ASPA）填入12颗牙齿未经处理的V类洞或与釉质和牙本质的抛光磨面接触。所有牙齿的磨片均通过显微放射照相术进行检查，其中4个切片进行了电子探针微量分析。牙本质壁中出现的一个狭窄的、射线不透性增加的外层区域，是由于钙和磷增加了5%-10%所致。在一些切片中，该区域覆盖了部分脱矿的表层下区域。釉质和牙本质中氟和铝的浓度分别约为0.3%和1.5%，在距表面16-80微米（氟）和8-24微米（铝）处降至低于0.1%。氟和铝在牙本质中的渗透深度均比在釉质中更深。在牙本质壁的一个狭窄外层区域，有时会观察到锌值降低，同时钙、磷和镁值升高。据推测，与硅酸盐水泥一样，玻璃离子水门汀由于在洞壁中摄取了氟和铝，必然具有防龋性能。
