The color change in artificial white spot lesions measured using a spectroradiometer

摘要: Objectives The purpose of this study was to determine the color white spot lesions. Materials and methods Human premolars were subjected a pH cycling produce artificial caries lesions classified into groups (n010/group): group 1, immersion in deionized water; 2, without fluoride (F) application; 3, with 1,000 ppm NaF solution; 4, 5,000 solution. CIE L*a*b* parameters tooth determined using spectroradiometer at baseline, after demineralization cycling. extent evaluated by scanning electron microscopy (SEM) microprobe analysis (EPMA). Results Significant degrees change (ΔE*) observed (p<0.05). changes mainly due an increase lightness (L*) decrease yellowness (b*). F application induced significantly large ΔE* 4 reversal remineralization mostly recovery L*. SEM EPMA verified that net mineral gains occurred subsurface Conclusions initially appearance enamel result L* b*. treatment partially restored Clinical relevance F-driven both esthetic enhancement artificially produced b* contributed changes.