Clinical effects of dehydration on tooth color: How much and how long?

Objective To evaluate effects of dehydration on tooth color determine whether color returns to baseline after 30 min or 24 h. Materials and methods Thirty participants with intact maxillary central and lateral incisors were recruited for the study. Color measurements were performed with a spectrophotometer (SpectroShade Micro) at baseline and at 10, 20, and 30 min of dehydration, as well as 30 min and 24 h of rehydration. CIEDE2000 color parameters were used to calculate color difference. The data were analyzed for color changes over time by repeated‐measures analysis of variance (ANOVA), and the Bonferroni‐Tukey test was used for post‐ANOVA comparisons (P