Giambro N J, Prostak K, Den Besten P K
Forsyth Dental Center, Boston, Mass., USA.
Caries Res. 1995;29(4):251-7. doi: 10.1159/000262077.
Mature fluorosed human enamel has been described as a subsurface enamel hypomineralization, with porosity increasing relative to the degree of fluorosis. The purpose of the current study was to quantitatively measure the color of the fluorosed enamel by light reflectance, and to further characterize the enamel by scanning electron microscopy. Teeth with varying degrees of fluorosis were obtained and divided in groups of mild, moderate and severe fluorosis using Dean's index for fluorosis. The color of the labial enamel surface was measured using a Minolta Chroma Meter CR241 (Minolta, Ramsey, N.J., USA). The teeth were further characterized for elemental composition using an energy-dispersive spectrometer, and imaged in both secondary and backscattered electron modes. The results of this study showed that the moderately and severely fluorosed enamel contained an uneven distribution of areas which were more electron-absorbent with a relatively increased carbon content. The changes in the physical characteristics of the teeth could be quantitated by measurements of light reflectance. The color of the teeth was significantly different between groups, with all groups significantly different than normal.
成熟的氟斑牙釉质被描述为一种牙釉质表层下矿化不足，孔隙率随氟中毒程度增加而升高。本研究的目的是通过光反射定量测量氟斑牙釉质的颜色，并通过扫描电子显微镜进一步表征牙釉质。获取了不同氟中毒程度的牙齿，并使用迪恩氟中毒指数将其分为轻度、中度和重度氟中毒组。使用美能达色差仪CR241（美国新泽西州拉姆齐市美能达公司）测量唇面牙釉质表面的颜色。使用能量色散光谱仪进一步表征牙齿的元素组成，并在二次电子和背散射电子模式下成像。本研究结果表明，中度和重度氟斑牙釉质中存在电子吸收性更强、碳含量相对增加的区域分布不均的情况。牙齿物理特性的变化可通过光反射测量进行定量。各组牙齿颜色存在显著差异，所有组与正常情况均有显著差异。
