Effect of an In-Office Bleaching Agent with Surface Pre-Reacted Glass-Ionomer Filler on the Enamel Surface: A In-Vitro Study.

In-office bleaching with high concentrations of hydrogen peroxide (HO) agents causes undesirable alterations in the enamel. Surface pre-reacted glass-ionomer (S-PRG) filler is a functional material known for its acid-neutralizing and demineralization-inhibition properties. This study evaluates the effect of S-PRG filler incorporation in HO-based bleaching on the enamel surface.

The bleaching effect of office bleaching agents containing S-PRG filler evaluated by pH value and electron spin resonance.

Objectives: Surface reaction-type pre-reacted glass-ionomer (S-PRG) filler releases six types of ions with a neutralizing ability. This study evaluated the effect of S-PRG filler incorporation in an HO-based bleaching material on the bleaching efficacy, pH, and reaction state.

Materials And Methods: The experimental bleaching material was formulated by the addition of 5% or 10% S-PRG fillers to the powder part.