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Frequency of Endodontic Flare-ups after Single versus Multiple Visit Root Canal Treatment in Patients with Irreversible Pulpitis

A Randomized Controlled Trial Comparing the Frequency of Post-Operative Flare-Ups Following Single-Visit versus Multiple-Visit Root Canal Treatment in Patients Diagnosed with Irreversible Pulpitis

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12625001327471
Acronym
FLARE-UP TRIAL
Enrollment
50
Registered
2025-11-28
Start date
2025-02-03
Completion date
2025-12-20
Last updated
2025-12-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

This randomized controlled trial aims to compare the frequency of post-treatment flare-ups (pain or swelling) in patients with irreversible pulpitis undergoing root canal treatment. The study will evaluate two common clinical approaches: single-visit versus multiple-visit root canal therapy. A total of 167 patients will be randomly assigned to one of the two groups. Flare-ups will be recorded on Day 1, Day 7, and at 1 month after treatment. The goal is to determine which approach results in fewer post-operative complications, helping clinicians provide more efficient and cost-effective care.

Interventions

Group 1 – Single Visit Root Canal Treatment (RCT): Participants will undergo root canal treatment completed in a single 1–1.5 hour appointment. The procedure will include access cavity preparation, working length determination using an apex locator (confirmed by periapical radiograph), rotary biomechanical preparation, irrigation with sodium hypochlorite, drying of canals, and obturation with gutta-percha and zinc oxide-based sealer. Frequency/duration: One treatment visit of approx. 1–1.5 hour

Group 1 – Single Visit Root Canal Treatment (RCT): Participants will undergo root canal treatment completed in a single 1–1.5 hour appointment. The procedure will include access cavity preparation, working length determination using an apex locator (confirmed by periapical radiograph), rotary biomechanical preparation, irrigation with sodium hypochlorite, drying of canals, and obturation with gutta-percha and zinc oxide-based sealer. Frequency/duration: One treatment visit of approx. 1–1.5 hours. Administered by: postgraduate resident in operative dentistry. Adherence monitoring: The procedure will be recorded in the patient’s dental chart.

Sponsors

Khyber College of Dentistry, Peshawar
Lead SponsorUniversity

Study design

Allocation
Randomised controlled trial
Primary purpose
Treatment

Eligibility

Sex/Gender
All
Age
18 Years to 60 Years
Healthy volunteers
No

Inclusion criteria

Male and female patients Aged between 18 to 60 years Diagnosed with irreversible pulpitis in a restorable tooth Tooth is not periodontally compromised Tooth shows no periapical radiolucency Able to provide informed consent

Exclusion criteria

ASA physical status classification III to V Tooth is mobile or unrestorable Periodontally compromised tooth Tooth with periapical radiolucency Tooth with external or internal root resorption Tooth with furcation (bifurcation) involvement Pregnant patients

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026