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Teeth Whitening

Research analysis led by and reviewed by the Examine team.
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Summary of Teeth Whitening

Scientific Information on Teeth Whitening

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Human Effect Matrix

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The Human Effect Matrix looks at human studies to tell you what supplements affect Teeth Whitening.

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Grade Level of Evidence
Robust research conducted with repeated double-blind clinical trials
Multiple studies where at least two are double-blind and placebo controlled
Single double-blind study or multiple cohort studies
Uncontrolled or observational studies only
Level of Evidence
? The amount of high quality evidence. The more evidence, the more we can trust the results.
Supplement Magnitude of effect
? The direction and size of the supplement's impact on each outcome. Some supplements can have an increasing effect, others have a decreasing effect, and others have no effect.
Consistency of research results
? Scientific research does not always agree. HIGH or VERY HIGH means that most of the scientific research agrees.
Notes
grade-b Notable Very High See all 3 studies
There appears to be a time dependent benefit on stain reduction when gum containing sodium bicarbonate is used, with efficacy at 4 weeks (around 30-50% stain reduction) but more at 12 weeks (around 70%)