. 2026 Jun 18;26:1414. doi: 10.1186/s12903-026-08954-8

Table 3.

ΔE₀₀ values of composite resin materials after 14 days of immersion in different teas

Composite Resin	Distilled Water	Black tea	Rooibos tea	Peppermint tea
Estelite Palfique Paste	1.85 (0.99—2.48)^A,b	2.90 (2.06—3.82)^B,a	2.68 (1.36–4.19)^B,a	1.98 (0.82–2.93)^A,a
Estelite Posterior	1.39 (1.15—1.65)^A,a	3.78 (2.89—4.22)^C,b	2.90 (1.82—3.44)^B,a	2.50 (1.76—2.95)^B,a

^*Values are presented as Median (Min–Max). Different uppercase letters (A,B) indicate statistically significant difference between staining conditions for each composite resin (horizontal comparison: Bonferroni−adjusted Mann–Whitney test, p < 0.0083). Different lowercase letters (a,b) indicate statistically significant difference between composite resins within each aging condition (vertical comparison: Bonferroni−adjusted Mann–Whitney test, p < 0.0125)