Which filling heals tooth infections better? new study to find out
NCT ID NCT07477171
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study compares two materials used to fill root canals during retreatment of infected teeth: standard gutta-percha and a newer material called MTA. About 58 adults with small infections around the tooth root will be treated and followed for one year. Researchers will check healing on X-rays, pain levels, and any tooth color changes.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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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
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About 58 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Mar 2026
An estimate. Start dates often move.
- Expected to finish
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Apr 2027
An estimate. End dates often move.
- Lead sponsor
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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
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: Patients ≥18 years old American Society of Anesthesiologists (ASA) physical status I and II Teeth requiring non-surgical endodontic retreatment Periapical lesion ≤10 mm in maximum diameter on periapical radiograph Apical canal diameter ≤ size 50 Teeth without periodontal defects or mobility Exclusion Criteria: Smokers Teeth with insufficient remaining tooth structure Teeth requiring surgical retreatment Primary endodontic treatment complications (fractured instrument, perforation, ledge or apical transportation)
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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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
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School of Medicine and Dentistry
Santiago de Compostela, A Coruña, 15705, Spain
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- Can a new sealer make root canals less painful?
- A tiny file trick might make root canals less painful
- Can sonic and laser devices revolutionize root canal healing?
- Can a paste save infected baby teeth without extraction?