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Table 1 Summary of experimental conditions

From: Tooth whitening with hydrogen peroxide in adolescents: study protocol for a randomized controlled trial

Group

Presence or absence of change in tooth color

Application site

Treatment

1

Presence

Maxillary and mandibular anterior teeth

Placebo gel without hydrogen peroxide - Formula e Açao – Sao Paulo/SP

- without activating source

2

Presence

Maxillary and mandibular anterior teeth

6.0% hydrogen peroxide –White Class with Calcium, FGM – Joenville/SC

- without activating source

3

Presence

Maxillary and mandibular anterior teeth

7.5% hydrogen peroxide –White Class with Calcium – FGM – Joenville/SC

- without activating source

4

Presence

Maxillary and mandibular anterior teeth

7.5% hydrogen peroxide – Oral-B 3D White, Oral-B - EUA

- without activating source