Toothpaste showdown: which paste best repairs tiny tooth cracks?
NCT ID NCT07069218
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests two kinds of toothpaste that contain hydroxyapatite, a mineral that helps rebuild tooth enamel. Forty children and teens with early signs of enamel damage will brush with one of the pastes twice a day for six months. Researchers will measure if the enamel gets stronger and if tooth sensitivity or other issues improve.
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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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About 40 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jul 2025
- Expected to finish
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Jun 2026
An estimate. End dates often move.
- 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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6 to 18 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Subjects aged between 6 and 18 years * Ability to understand and follow instructions in Italian or English * Signed written informed consent provided by the parent/legal guardian and assent from the minor * Good cooperation and adherence to clinical instructions * Fully erupted permanent first molars and upper central incisors in good general condition * DIAGNOdent Pen baseline values in the C1 (0-12) or C2 (13-24) range Exclusion Criteria: * DIAGNOdent Pen values greater than 25 * Ongoing systemic antibiotic therapy * Presence of sealants or composite restorations on first permanent molars or upper central incisors * Severe enamel alterations such as molar-incisor hypomineralization (MIH), fluorosis, or extensive white/brown spot lesions * Poor motivation or limited compliance with study procedures
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Unit of Orthodontics and Pediatric Dentistry - Section of Dentistry - Department of Clinical, Surgical, Diagnostic and Pediatrics - University of Pavia
RECRUITINGPavia, Lombardy, 27100, Italy
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