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Warm fillings may soothe sensitive teeth — a trial puts it to the test

NCT ID NCT07720999

Symptom relief Sponsor: Ain Shams 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 22, 2026 · Last updated Jul 23, 2026 · Updated 1 time

Summary

This trial tests whether warming up dental filling materials before placement can reduce inflammation inside the tooth and lessen pain after treatment. Thirty adults with deep cavities will receive fillings at different temperatures — one group gets a special flowable composite preheated to 65°C, another gets a standard composite warmed to 55°C, and a control group gets the same standard composite at room temperature. Researchers will measure markers of inflammation in fluid from the gums and ask participants about pain levels over a week.

What this could mean

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

Active substance
preheated dental filling materials (VisCalor thermoviscous bulk-fill composite at 65°C; Tetric EvoCeram conventional nanohybrid composite at 55°C or room temperature)
What this could lead to
If preheating reduces inflammation, dentists may adopt warmer fillings to lessen post-filling pain.
What could go wrong
This is a very small early trial with only 30 participants, so results may not apply broadly. Preheating could also cause other issues not measured here.

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

30 people

The number who actually took part.

Started

Nov 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 to 45 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: Patients aged 18-45 years in good general health Asymptomatic deep occlusal carious lesions with ICDAS scores 5 and 6, confirmed by preoperative periapical radiographs Healthy gingiva with probing depths ≤ 3 mm Normal occlusion No radiographic evidence of periodontal bone loss No anti-inflammatory or antibiotic therapy within the preceding six months Willingness to provide written informed consent and complete the full study period Exclusion Criteria: Pregnant or nursing women Incarcerated individuals Individuals with mental health disorders Current tobacco users Patients with systemic conditions (e.g., diabetes mellitus, immunocompromise) Teeth with prior endodontic therapy Periodontal pockets \>3 mm Use of medications influencing inflammatory responses Orthodontic appliance wearers History of allergy to dental materials or local anesthetics Active periodontal disease Teeth with periapical pathology or pulp exposure

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Conditions

The condition(s) this trial relates to.

dental caries Pain, Postoperative pulpitis

As listed by the trial registrant

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

Dental caries Postoperative pain Pulpal inflammation

Contacts and locations

Locations

  • Ain Shams University

    Cairo, Cairo Governorate, Egypt

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