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Can a handheld device perfectly measure root canals? study puts it to the test

NCT ID NCT07689838

Diagnosis Sponsor: Riyadh Elm University 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 08, 2026 · Last updated Jul 09, 2026 · Updated 1 time

Summary

This study evaluates how accurately the Root ZX3 electronic apex locator measures the working length of root canals in single-rooted teeth that need to be extracted. Researchers compare the device's measurements with microscopic measurements taken after extraction, which serve as the gold standard. The goal is to see if the device can reliably guide dentists during root canal treatment, potentially improving outcomes.

What this could mean

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

Active substance
Root ZX3 Electronic Apex Locator
What this could lead to
If accurate, this device could help dentists perform root canals more precisely, reducing the risk of complications.
What could go wrong
This is a small diagnostic study with 41 participants, and results may not apply to all tooth types or conditions. The device's accuracy may vary.

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

41 people

The number who actually took part.

Started

Oct 2025

Finished

Jun 2026

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

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: * \* Adults (≥18 years) requiring extraction of a single-rooted permanent tooth for prosthodontic, periodontal, orthodontic, or non-restorable reasons. * Tooth requiring primary nonsurgical root canal treatment. * Fully formed root with a closed apex. * Ability to provide written informed consent. Exclusion Criteria: * Teeth with root resorption (internal or external). * Teeth with root perforation or previous endodontic treatment. * Teeth with immature (open) apices. * Teeth with root fractures. * Teeth in which apical patency could not be achieved. * Teeth with no electronic working-length measurement obtained using the Root ZX3. * Teeth that fractured during extraction, preventing microscopic determination of the actual working length.

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Conditions

The condition(s) this trial relates to.

dental caries dental pulp disorder periapical periodontitis

As listed by the trial registrant

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

Apical periodontitis Pulp disease, dental

Contacts and locations

Locations

  • Abier alhekeir

    Riyadh, Riyadh Region, 12755, Saudi Arabia

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