highly significantp ≈ 5 × 10 −5
However, Filtek sealed in water shows a highly significant increase in roughness as early as 1 day ( p ≈ 5 × 10 −5 ) that continues at 7, 14 and 90 days.
However, Filtek sealed in water shows a highly significant increase in roughness as early as 1 day ( p ≈ 5 × 10 −5 ) that continues at 7, 14 and 90 days.
In short, the results show a clear trend over time: as ΔE increases from ΔE1 to ΔE4, the visibility of discoloration steadily grows.