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Less drilling, same tooth saving? new trial tests gentler cavity care for teens

NCT ID NCT06944028

Disease control Sponsor: Karolinska Institutet 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 25, 2026 · Last updated Aug 13, 2026 · Updated 3 times

Summary

This study compares two ways to treat deep cavities in young permanent teeth without exposing the nerve. In selective excavation, the dentist removes only the outer decay and seals the tooth. In stepwise excavation, they place a temporary filling first and remove more decay a few months later. The goal is to keep the tooth alive and avoid root canals. About 666 children and teens aged 8-19 are taking part, with results tracked for up to 3 years.

What this could mean

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

Active substance
Selective or stepwise excavation (dental procedure)
What this could lead to
If successful, this could show that a less invasive cavity treatment works as well as a two-step approach, helping dentists save more young teeth from root canals or extraction.
What could go wrong
This is a mid-sized trial with 1-3 year follow-up, so long-term results are unknown. The procedures may still fail and require more invasive treatment later.

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 666 people

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

Started

Sep 2025

Expected to finish

Dec 2029

An estimate. End dates often move.

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

8 to 19 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

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: Children aged 8- 19 years (last December the year they turn 19 years) A fully erupted molar or pre-molar teeth with dental caries (class I or class II) extending to more than 2/3 of the dentine thickness (and on the bitewing radiograph showing a radiodense zone separating the pulp from the demineralized dentine). Bitewing radiograph has been taken as part of the ordinary dental examination Available for recall at least for 1 year. Exclusion Criteria: Extraction is planned of the tooth with deep caries in the future with expected spontaneous gap closure. If the carious tooth shows sign or symptoms of irreversible pulp pathology or loss of vitality including: * Presence of a sinus tract (fistula) * Tenderness to percussion * Buccal tenderness * Severe sensitivity * Evidence of pathology on a periapical radiograph (if radiograph is clinically justified and performed) * No written informed consent. * Medical condition requiring special considerations with regard of the dental management * Dental treatment cannot be performed adequate due to lack cooperation

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Conditions

The condition(s) this trial relates to.

dental caries dentin caries

As listed by the trial registrant

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

Dental caries Dental cavities

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

    The full official record for this study. This one lists no contact details, but it is the first place any would appear.

    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

  • Folktandvården Stockholm

    Stockholm, Sweden

More trials for these conditions

Other studies related to the condition(s) this trial covers.