Electric toothbrush battle: which brush wins for whiter teeth?
NCT ID NCT05202093
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tested two Oclean sonic electric toothbrushes against a standard manual toothbrush to see which reduces extrinsic tooth stains best. Over 8 weeks, 129 adults brushed twice daily and had their stains measured using a standard index. The goal was to find out if the sonic brushes lead to less staining.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Oclean sonic toothbrush (electric toothbrush)
- What this could lead to
- If successful, this could show that certain electric toothbrushes remove stains better than manual brushing, helping people choose a more effective tool for a brighter smile.
- What could go wrong
- This is a small, completed trial with no blinding, so results may be biased. Stain reduction is cosmetic and does not affect health. Different results may occur in real-world use.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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129 people
The number who actually took part.
- Started
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Mar 2022
- Finished
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Jul 2022
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 70 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
The inclusion criteria were: 1) aged 18-70 years; 2) good general health; 3) ability to attend all scheduled visits over the 8-week study period; 4) possession of more than 20 natural permanent teeth, excluding third molars, which are free of crowns or extensive restorative materials; 5) at least 12 anterior teeth suitable for scoring (i.e., free of crowns, veneers, large restorations, trauma, or non-vital pulp); 6) a whole-mouth mean Lobene stain composite score greater than 1. Exclusion criteria included: 1) severe oral or systemic diseases; 2) advanced periodontal diseases; 3) pregnancy or lactation; 4) dental fluorosis or tetracycline staining; 5) orthodontic appliances or partial removable dentures; 6) participation in other clinical trials; 7) professional prophylaxis within 3 months or tooth whitening within 6 months; and 8) known allergy to study products.
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As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Hongchun Liu
Guangzhou, Guangdong, 510055, China
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