Characteristic Milder Forms of Fluorosis Nonfluoride Enamel Opacities Area affected Usually seen on or near tips of cusps or incisal edges. Often round or oval.
Demarcation Shades off imperceptibly into surrounding normal enamel.
Clearly differentiated from adjacent normal enamel. Incisal edges, tips of cusps may have frosted appearance. Rare on lower incisors. Usually seen on six or eight homologous teeth. Extremely rare in deciduous teeth.