A comparative evaluation of the effect of three different concentrations of in-office bleaching agents on microhardness and surface roughness of enamel - An <i>in vitro</i> study.

Dent Res J (Isfahan) · 2021 · PMC8351945 · PMID 34429869

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highly significantno p-value reported

On application of paired t -test, a highly significant reduction was observed in the mean microhardness values when the postbleach results were compared to the baseline values within a group for all the three different bleaching agents ( P < 0.05).

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