Geurtsen W
Department of Conservative Dentistry and Periodontology, Medical University Hannover, Germany.
Eur J Oral Sci. 1998 Apr;106(2 Pt 2):687-95. doi: 10.1046/j.0909-8836.1998.eos10602ii04.x.
An increasing number of cavities in the primary and permanent dentition is restored with tooth-colored materials, especially dental resin composites or glass ionomer cements. Several investigations have revealed that various components are segregated from different composite filling materials into an aqueous environment after polymerization. Most organic substances can be extracted from a set resin by organic solvents (methanol, tetrahydrofuran, ethanol). Furthermore, in most studies, the co-monomer TEG-DMA has been identified as the main compound released from polymerized resin composites into aqueous media. However, small quantities of the monomers (Bis-GMA, UDMA) and other co-monomers, as well as additives, may also be released into water. Very little data have been published about substances released from various types of glass ionomer cements (GIC), except the liberation of fluoride. Erosion studies have revealed that there is a considerable disintegration of GICs at lower pH-values. However, the nature of the eroded substances has not yet been clarified. Altogether, the data presented in this review indicate that information is comparably scarce for resin composites and GICs in comparison to the rich amount of knowledge concerning amalgams. Therefore, further studies are necessary to determine quality and quantity of substances segregated from resin composites and GICs.
越来越多的乳牙和恒牙龋洞使用牙齿颜色的材料进行修复，尤其是牙科树脂复合材料或玻璃离子水门汀。多项研究表明，聚合后，不同复合填充材料中的各种成分会分离到水环境中。大多数有机物质可通过有机溶剂（甲醇、四氢呋喃、乙醇）从固化的树脂中提取出来。此外，在大多数研究中，共聚单体TEG - DMA已被确定为从聚合树脂复合材料释放到水性介质中的主要化合物。然而，少量的单体（Bis - GMA、UDMA）和其他共聚单体以及添加剂也可能释放到水中。除了氟化物的释放外，关于从各种类型的玻璃离子水门汀（GIC）中释放的物质的报道非常少。侵蚀研究表明，在较低的pH值下，GIC会有相当程度的分解。然而，被侵蚀物质的性质尚未明确。总的来说，本综述中给出的数据表明，与关于汞合金的丰富知识相比，树脂复合材料和GIC的信息相对较少。因此，有必要进行进一步的研究，以确定从树脂复合材料和GIC中分离出的物质的质量和数量。
