Perio & Hygiene Study ✓ Peer reviewed

Effects of Different Whitening Toothpastes on the Color of Aged Zirconia-Reinforced Lithium Silicate Ceramics After Immersion in an Acidic Beverage.

BioMed research international · Akbarnia AR, Ahmadi E, Ranjbar Omrani L, Azizzadeh AM, Shamshiri AR, Farshad F, Abbasi M · 2026-01-01

Researchers tested how two whitening toothpastes affected the color of aged zirconia-reinforced lithium silicate ceramic specimens after acid beverage exposure and thermal cycling. Neither whitening toothpaste produced clinically noticeable color changes on the ceramic material.

A plain-English summary of the study's own findings — we don't add our own claims or interpretation. Read the full paper for the complete methods and results, and apply your own clinical judgement.

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