Which root canal technique hurts less? new study has answers
NCT ID NCT07562139
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study compared two ways to fill a root canal after treating a painful tooth infection (irreversible pulpitis). 56 people aged 18-60 took part. One group got a continuous wave condensation filling, the other a single-cone filling. Researchers measured how long each method took, how well the filling sealed the tooth, pain levels after treatment, and whether the tooth was still healthy 6 months later.
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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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56 people
The number who actually took part.
- Started
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Jun 2022
- Finished
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Jun 2025
- 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 to 60 years
- 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: * Teeth diagnosed with irreversible pulpitis * Indicated for endodontic treatment * Patients aged 18-60 years Exclusion Criteria: * Periapical/furcation lesions; * Need for periodontal surgery * Periodontal pockets ≥ 5 mm * Adjacent teeth undergoing endodontic treatment * Severely fractured or non-restorable crowns * Immature/abnormal roots * Internal or external resorption * Calcified/C-shaped canals * Canal curvature \>70° * Failures during canal preparation
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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.
Contacts and locations
Locations
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Faculty of Odonto-Stomatology, Hue University of Medicine and Pharmacy, Hue University
Huế, Hue, 49000, Vietnam
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- Chilling dental anesthetic may cut root canal pain
- Can a Flat-Sided dental file mean less pain after a root canal?
- Can a gentler tooth treatment save painful baby molars?
- Could a new filling material save baby teeth when adult teeth are missing?
- Can a simpler procedure save children's aching baby teeth?