New study tests if a faster drill makes kids less scared at the dentist
NCT ID NCT07415694
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at whether using a special rotating tool (rotary file) instead of a hand tool (manual file) during a baby molar root canal (pulpectomy) makes children behave better. It will include 54 children aged 4-6 who need this treatment. The main goal is to see if the rotary tool leads to less fear and more cooperation.
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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 54 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Apr 2026
An estimate. Start dates often move.
- Expected to finish
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Jun 2027
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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4 to 6 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.
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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: * Patients: • Aged 4-6years, Medically free and Cooperative. * Teeth: * Restorable mandibular second primary molars with clinical signs or symptoms of irreversible pulpitis. Pre-operative Radiographic criteria: * Absence of internal or external root resorption. * Absence of periapical or inter-radicular radiolucencies. Exclusion Criteria: * Patients: * Uncooperative children. * Children with systemic disease. * Physical or mental disabilities. * Refusal of participation. * Unable to attend follow- up visits. * Refusal to sign the informed consent. Teeth: * Previously accessed teeth. * Mobile mandibular primary molars. * Pain on percussion. * Swelling in the vestibule or on palpation.
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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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Faculty of Dentistry, Cairo University
Cairo, 11411, Egypt
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Which root canal sealer leaves patients in less pain?
- Chilling dental anesthetic may cut root canal pain
- Can a Flat-Sided dental file mean less pain after a root canal?
- Can a gentler tooth treatment save painful baby molars?
- Could a new filling material save baby teeth when adult teeth are missing?
- Can a simpler procedure save children's aching baby teeth?