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Could lasers replace the Dentist's drill? trial puts Er:YAG to the test

NCT ID NCT07831720

NEW Symptom relief Sponsor: Ho Chi Minh City Odonto-Stomatology Hospital 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 This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Sep 21, 2026 · Last updated Sep 21, 2026

Summary

Researchers compare Er:YAG laser cavity preparation with conventional rotary drills in adults who have permanent premolars scheduled for extraction as part of orthodontic treatment. Each participant receives both methods on two different teeth, at separate visits, and rates pain after each procedure. About a month later, the teeth are extracted as planned and examined in the laboratory to compare cavity surfaces and microleakage. The study aims to see how the two methods differ in procedure time, pain, patient preference, and the quality of the prepared cavity.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Er:YAG laser for cavity preparation
What this could lead to
If it works, laser cavity preparation could offer a less painful alternative to the dental drill for treating early tooth decay.
What could go wrong
This is a small study of 20 adults with teeth already scheduled for extraction, so the findings may not apply to routine dental care. Laser equipment costs more and takes time to learn, and results in a controlled trial may differ from everyday practice.

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

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

About 20 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

Sep 2026

An estimate. Start dates often move.

Expected to finish

Jul 2027

An estimate. End dates often move.

Lead sponsor

A government agency

The lead sponsor is a government body.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

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: * Adult participants with permanent maxillary or mandibular premolars scheduled for extraction for orthodontic reasons. * Eligible premolars are intact or have carious lesions limited to the enamel and are free of pain symptoms. * Where carious lesions are present, teeth meet the study eligibility criteria based on ICDAS II 2009, as specified in the study protocol. * Participants voluntarily agree to participate and provide informed consent. * No spontaneous or continuous dental pain. * Clinical examination, thermal pulp testing, and electric pulp testing are consistent with normal pulp status. * Radiographic examination shows no periapical radiolucency and complete root apex formation. * Participants have no systemic health condition that could adversely affect healing. Exclusion Criteria: * Participants with psychological or behavioral conditions that prevent adequate cooperation with the study procedures. * Teeth showing radiographic evidence of internal root resorption or pulp canal calcification.

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Conditions

The condition(s) this trial relates to.

dental caries Patient Preference

As listed by the trial registrant

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

Dental caries

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. 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

  • Ho Chi Minh City Odonto-Stomatology Hospital

    Ho Chi Minh City, Ho Chi Minh City, 71011, Vietnam

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