Orthodontist, Private Practice, Kalamazoo, MI, USA.
Associate Professor and Program Director, Tufts University, School of Dental Medicine, Department of Orthodontics, Boston, MA, USA.
J Esthet Restor Dent. 2016 Sep;28(5):339-346. doi: 10.1111/jerd.12207. Epub 2016 Mar 25.
To assess color properties of white spot lesions (WSLs) following resin infiltration treatment in vitro.
WSLs were artificially created on 30 extracted human teeth. Two groups were formed: (a) control, and (b) resin infiltrant group (n = 15, each). Instrumental color measurements were performed using a spectrophotometer and visual color evaluation was performed by three independent evaluators. Color assessment was determined at three time points: baseline (T0), after WSL formation (T1), and after resin infiltrant or control treatment (T2). CIELAB color coordinates were determined and the resultant color difference (ΔE*) was calculated between the time points. Two-way repeated measures analysis of variance (ANOVA) and One-way ANOVA analyses were used to evaluate the color changes. Pearson chi-square analysis was performed to evaluate the visual ratings between treatment and control groups. Level of significance was set p <0.05.
After treatment of WSLs there was a significant color change (ΔE*) between treatment and control groups (p <0.05). Resin infiltration group showed a regression of all values toward the pretreatment levels. There was a significant difference in visual evaluation ratings between groups after treatment; treatment group had all surfaces receive a rating of being clinically acceptable, with 73% of these surfaces having no perceptible color difference to adjacent sound enamel. Meanwhile, control group received ratings of all surfaces having a visual color difference that was deemed as unacceptable (p < 0.05).
In-vitro resin infiltration for the treatment of enamel WSLs produced a significant improvement in color, reverting L*, a*, and b* values back toward baseline values.
Resin infiltration of enamel white spot lesions on teeth is capable of managing the esthetic problem by reverting the L*, a*, and b* color coordinates back to their baseline values. (J Esthet Restor Dent 28:339-346, 2016).
评估体外树脂渗透治疗后白斑（WSL）的颜色特性。
在 30 颗离体人牙上人工制作 WSL。将样本分为两组：（a）对照组，（b）树脂渗透组（n=15，每组）。使用分光光度计进行仪器颜色测量，由三位独立评估员进行视觉颜色评估。颜色评估在三个时间点进行：基线（T0）、WSL 形成后（T1）和树脂渗透或对照治疗后（T2）。确定 CIELAB 颜色坐标，并计算各时间点之间的颜色差异（ΔE*）。采用双向重复测量方差分析（ANOVA）和单向 ANOVA 分析评估颜色变化。采用 Pearson 卡方检验评估处理组和对照组之间的视觉评分。显著性水平设置为 p<0.05。
WSL 治疗后，处理组与对照组之间的颜色变化（ΔE*）有统计学意义（p<0.05）。树脂渗透组所有值均向治疗前水平回归。治疗后两组的视觉评估评分有显著差异；治疗组所有表面均被评为临床可接受，其中 73%的表面与相邻正常牙釉质无明显颜色差异。而对照组所有表面均被评为具有不可接受的视觉颜色差异（p<0.05）。
体外树脂渗透治疗牙釉质 WSL 可显著改善颜色，使 L*、a和 b值恢复到基线值。
树脂渗透治疗牙齿釉质 WSL 可通过将 L*、a和 b颜色坐标恢复到基线值来解决美观问题。（J Esthet Restor Dent 28:339-346, 2016）。
