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Cold or gel? study finds best way to ease Kids' dental injection pain

NCT ID NCT07351383

Symptom relief Sponsor: Universidad Autonoma de San Luis Potosí Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tested two ways to reduce pain from dental numbing shots in children. 28 kids aged 6 to 12 received a cold technique on one side of the mouth and a numbing gel on the other side during different visits. Researchers measured pain, heart rate, and oxygen levels to see which method worked better.

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

Phase 3

Large-scale testing in a bigger group. Usually the last step before a treatment can be approved.

Participants

28 people

The number who actually took part.

Started

Jun 2025

Finished

Nov 2025

Lead sponsor

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

6 to 12 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show 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.

Inclusion Criteria: * Systemic health: No significant medical history or uncontrolled systemic disease. * Bilateral dental pathology requiring treatment: At least two teeth (one per mandibular hemiarch) requiring bilateral inferior alveolar nerve blocks for restorative or endodontic treatment. * Cooperation level: Frankl behavioral rating scale classification III or IV (positive or very positive). * Informed consent/Child assent: Signed informed consent from parent or legal guardian; signed assent from participant (age-appropriate). Exclusion Criteria: * Acute dental emergency requiring immediate treatment. * Known hypersensitivity or allergy to benzocaine or other local anesthetics. * Known hypersensitivity to cold (cryophobia or cold urticaria). * Significant dental anxiety or phobia precluding study participation. * Developmental delay or behavioral disorders limiting communication or cooperation. * Current use of medications affecting pain perception or hemodynamic parameters.

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Local anesthetic infiltration Pain perception Topical anesthesia

Contacts and locations

Locations

  • Pediatric Dentistry Postgraduate Program, Faculty of Denttistry

    San Luis Potosí City, S.l.p., 78990, Mexico

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