Table 1.

Mean color differences and standard deviations of treatment groups between each reading.

Treatment group	n	∆E O–1	∆E 1–2	∆E 2–3
Group A	8	8.5 ± 5.8	4.4 ± 2.9	4.3 ± 2.2
Group B	8	9.1 ± 4.1	8.3 ± 2.6	9.4 ± 4.9
Group C	8	8.7 ± 5.4	2.2 ± 1.3	3.6 ± 4.5

Ref. ∆E: Color difference—No significant differences were found between the three groups and within each group, between readings.