Universidade do Vale do Paraíba, UNIVAP, Research and Development Institute, IP&D Laboratory of Biomedical Vibrational Spectroscopy, LEVB, São José dos Campos, São Paulo, Brazil.
Microsc Microanal. 2012 Oct;18(5):1112-7. doi: 10.1017/S1431927612001535.
Energy-dispersive X-ray fluorescence was employed to test the hypothesis that beverage consumption or mouthwash utilization will change the chemical properties of dental materials and enamel mineral content. Bovine enamel samples (n = 45) each received two cavity preparations (n = 90), each pair filled with one of three dental materials (R: nanofilled composite resin; GIC: glass-ionomer cement; RMGIC: resin-modified GIC). Furthermore, they were treated with three different solutions (S: saliva; E: erosion/Pepsi Twist®; or EM: erosion+mouthwash/Colgate Plax®). It was found that mineral loss in enamel was greater in GICE samples than in RE > RMGICE > RMGICEM > REM > GICEM. An increased percentage of Zr was found in REM indicating organic matrix degradation. Dental materials tested (R, GIC, and RMGIC) were not able to protect adjacent enamel from acid erosion by the soft drink tested. The use of mouthwash promoted protection of enamel after erosion by the soft drink. To avoid chemical dissolution by mouthwashes, protection by resin composites with surface sealants is recommended.
采用能量色散 X 射线荧光法检验了以下假设：饮用饮料或使用漱口水会改变牙科材料和牙釉质矿物质含量的化学性质。将牛牙釉质样本（n=45）每个样本制备两个窝洞（n=90），每对窝洞填充三种牙科材料之一（R：纳米复合树脂；GIC：玻璃离子水门汀；RMGIC：树脂改性玻璃离子水门汀）。此外，用三种不同的溶液（S：唾液；E：脱矿/百事可乐扭扭瓶；或 EM：脱矿+漱口水/高露洁牙线）进行处理。结果发现，GIC 样本的牙釉质矿物质损失大于 RE > RMGIC > RMGICEM > REM > GICEM。在 REM 中发现 Zr 的百分比增加，表明有机基质降解。测试的牙科材料（R、GIC 和 RMGIC）不能保护相邻牙釉质免受所测试软饮料的酸蚀。使用漱口水可在软饮料腐蚀后保护牙釉质。为避免被漱口水溶解，建议使用具有表面密封剂的树脂复合材料进行保护。
