Cariology and Operative Dentistry, Department of Restorative Sciences, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan.
Dent Mater J. 2009 Sep;28(5):523-9. doi: 10.4012/dmj.28.523.
The purpose of this study was to assess the relationship between quantitative light-induced fluorescence (QLF) values and demineralization depths in an enamel erosion model in vitro. Flat labial enamel surfaces of bovine incisors were ground with 800-grit SiC and coated with nail varnish, but also leaving rectangular windows of enamel uncoated. Subsequently, they were immersed in a lactic acid gel (pH 5.0) for 0 to 7 weeks to make an enamel erosion model. Carious lesions thus induced were analyzed by QLF and the demineralization depths measured using SEM/ EDS method at the end of each period. A wide range of erosive lesions were produced with a steady increase in both demineralizing depth and fluorescence loss (DeltaF) over time. With this model, a good correlation was exhibited between each DeltaF value and the demineralization depth. Results of this study indicated that QLF could detect and quantify mineral loss under the eroded surface of the enamel erosion model.
本研究旨在评估定量光诱导荧光（QLF）值与体外牙釉质脱矿模型中脱矿深度之间的关系。用 800 目 SiC 研磨牛切牙的颊面釉质，并涂指甲油，但也留下未涂指甲油的釉质矩形窗口。随后，将其浸泡在乳酸凝胶（pH 5.0）中 0 至 7 周，制成牙釉质脱矿模型。使用 QLF 分析由此产生的龋齿病变，并在每个时期结束时使用 SEM/EDS 方法测量脱矿深度。随着时间的推移，产生了广泛的腐蚀性病变，脱矿深度和荧光损失（DeltaF）均稳步增加。通过该模型，每个 DeltaF 值与脱矿深度之间表现出良好的相关性。研究结果表明，QLF 可以检测和量化牙釉质脱矿模型受侵蚀表面下的矿物质损失。
