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RecruitingNCT06413836aPDTUpdated May 17, 2024

Evaluation of Photodynamic Therapy in Pieces With Presence of Fistula.

An interventional study of aPDT and Endodontic treatment in Periodontitis and Fistula, sponsored by University of Nove de Julho. Recruiting at 1 site in Uruguay. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2024-05-17.

Sponsored by University of Nove de Julho · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Jun 2025, 1 year 5 months ago, but the record still lists the study as recruiting.
  • Started May 2024; still recruiting 2 years 6 months later.
Phase
Not applicable
Study type
Interventional
Enrollment
30
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The goal of this clinical trial is to learn if adjuvant antimicrobial photodynamic therapy (aPDT) can help in the treatment in patients with pieces with apical periodontitis and the presence of fistula, in terms of reducing symptoms, resolution of fistula and the clinical signs of inflammation at the oral mucose, as well as, evaluation radiographic parameters.

Participants will undergo conventional endodontic treatment at Group I (n=15) and will undergo conventional endodontic treatment combined with antimicrobial photodynamic therapy at Group II(n=15).

Read the detailed description

The calculation of the sample size was conducted with the statistical software G-Power 3.1 applying the chi-square homogeneity test. Identical sample sizes were considered for the aPDT group and the sham group. The percentage of type error was set at 5% and the statistical power at 80%, obtaining n = 30 considering 10% losses. The distribution of data within each group and the homogeneity of the variants will be verified for the choice of an analysis of variance or not. With this information the most proper statistical test will be conducted. The sample size calculation is based on the literature and a 5% significance level will be adopted

02

Conditions studied

  • Periodontitis
  • Fistula

Keywords

  • Periodontitis
  • Fistula aPDT
  • Methylene Blue
03

In context

Periodontitis

1,231 studies on the registry are indexed under Periodontitis; 295 are open to participants now.

This study's planned enrollment of 30 is below the median of 44 across 846 interventional studies indexed under Periodontitis.

Browse Periodontitis studies →

Lead sponsor

University of Nove de Julho is the lead sponsor of 246 studies on the registry; 52 are open to participants now.

Of its 8 completed or terminated interventional studies of FDA-regulated products, 1 (13%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

Patients must have a single-rooted tooth with apical periodontitis and the presence of fistula.

Patients must be over 18 years of age.

Exclusion criteria

Exclusion Criteria:

Patients with comorbidities such as cancer, diabetes, coagulation diseases, and anemia; Patients undergoing orthodontic treatment; Patients with periodontal pockets deeper than 4 mm; Patients taking antibiotics; Pregnant or lactating patients; Patients with parts that present the impossibility of performing absolute isolation.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Outcomes assessor)
Enrollment
30 participants (estimated)

Study arms

  • Experimental
    aPDT Therapy

    antimicrobial photodynamic therapy using methylene blue in surfactant solution

    Device: aPDT · Procedure: Endodontic treatment

  • Sham comparator
    conventional treatment

    Endodontic treatment conventional treatment

    Procedure: Endodontic treatment

Interventions

  • DeviceaPDT

    Mechanized endodontic treatment using an endodontic rotatory device (DENTSPLY) will be used to prepare the root canals. Following, it will be applied the methylene blue solution in surfactant medium and after 1 minute a diode laser equipment (DMC THERAPY/EC, Sao Carlos, Brazil) will be used to shine light at a wavelength of 660nm, 100 mW (miliWatts) and irradiation time of 3 min. CaOH (calcium hydroxide) paste will be applied at the root canals canals as a long-term dressing for endodontic treatment..

  • ProcedureEndodontic treatment

    Mechanized endodontic treatment using an endodontic rotatory device (DENTSPLY) will be used to prepare the root canals. Following, it will be applied the methylene blue solution in surfactant medium and after 1 minute a diode laser equipment (DMC, THERAPY/EC, Sao Carlos, Brazil) will be used with an aluminium foil at the tip of the equipment to block light and use during 3 min as study group. CaOH (calcium hydroxide) will be applied at the root canals as a long-term dressing for endodontic treatment.

06

What researchers measure

Primary outcomes

  1. Fistula presence

    Clinical observation to check presence or absence of fistula

    Time frame: Day 15

Secondary outcomes

  1. Radiographic register

    Radiolucent radiograph analysis defining improvement or absence of improvement of the bone lesion.

    Time frame: Day 0 and Day 30

07

Study locations

1 of 1 sites recruiting
  • UCU
    Montevideo, 11200, Uruguay
    Recruiting
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 17, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06413836
Responsible party
Renato Araujo Prates (Resercher, University of Nove de Julho) — Principal investigator
First posted
May 14, 2024
Start date
May 1, 2024
Primary completion
Jun 2025 (estimated)
Completion
Jan 2026 (estimated)
Last update
May 17, 2024

Study contacts

Carolina Wince
Contact
caritowince@gmail.com
099637248
Renato Prates
study director · University of Nove de Julho

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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