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Bacterial Profile Changes During Different Sodium Hypochlorite Irrigation Regimens and Calcium Hydroxide Medicament in Root Canal Treatment (BactProfil-RCT)

3 juni 2026 uppdaterad av: Beatrix Zitzy Uniquen Enoch, Hasanuddin University

Bacterial Profile Changes During Root Canal Treatment With 5.25% and 3% Sodium Hypochlorite Irrigation and Calcium Hydroxide Medicament Assessed by 16S rRNA PCR

The goal of this clinical trial is to learn how the bacterial profile in infected root canals changes during different phases of routine root canal treatment in adults with chronic apical abscess. The main questions it aims to answer are:

  • How does the root canal bacterial profile change before and after irrigation with 5.25 percent sodium hypochlorite or 3 percent sodium hypochlorite?
  • How does the bacterial profile change after calcium hydroxide medicament is placed in the root canal?

Participants will:

  • Receive standard root canal treatment with one of two irrigation regimens (5.25 percent or 3 percent sodium hypochlorite, plus EDTA),
  • Have root canal samples taken three times (before any treatment, after irrigation, and after calcium hydroxide medicament), and
  • Have the bacteria in these samples analyzed using 16S rRNA PCR and DNA sequencing.

Studieöversikt

Status

Avslutad

Betingelser

Intervention / Behandling

Detaljerad beskrivning

Chronic apical abscess is associated with complex multispecies biofilms in the root canal that can differ between populations and are not fully characterized by conventional culture methods. This study focuses on adult patients with necrotic molar teeth and chronic apical abscess treated at the Dental and Oral Hospital, Faculty of Dentistry, Hasanuddin University. The main objective is to describe how the root canal bacterial community profile changes during different phases of routine root canal treatment using 16S rRNA PCR and sequence analysis.

The study uses a descriptive and analytic repeated-measures design. At least 24 adult outpatients with necrotic pulp and chronic apical abscess who meet the inclusion and exclusion criteria will be recruited and provide written informed consent. After rubber dam isolation, access cavity preparation, and working length determination, the first root canal sample (S1) is collected from the distal canal using a sterile Hedström file and transferred into a tube containing DNA preservative solution. Mechanical preparation is then performed with rotary instruments. Patients are randomly assigned by clinic staff, who are blinded to the investigator, to one of two irrigation regimens: 5.25 percent sodium hypochlorite or 3 percent sodium hypochlorite, each followed by sterile distilled water, 17 percent EDTA, and a final rinse with sterile distilled water. A second sample (S2) is collected from the same canal after irrigation. Calcium hydroxide intracanal medicament is then placed and the tooth is temporized.

After approximately two weeks, the temporary restoration and calcium hydroxide are removed, and a third sample (S3) is collected from the same canal using a sterile Hedström file. All samples are stored in DNA preservative solution and analyzed by 16S rRNA PCR followed by DNA sequencing to characterize the bacterial community composition and diversity. The study will compare bacterial taxa and community profiles at S1, S2, and S3 and between the two sodium hypochlorite concentrations in order to explore how root canal irrigation and calcium hydroxide medicament are associated with changes in the bacterial community.

Studietyp

Interventionell

Inskrivning (Faktisk)

24

Fas

  • Inte tillämpbar

Kontakter och platser

Det här avsnittet innehåller kontaktuppgifter för dem som genomför studien och information om var denna studie genomförs.

Studieorter

  • Indonesien
    • South Sulawesi
      • Makassar, South Sulawesi, Indonesien, 90245
        • Dental and Oral Hospital Hasanuddin University

Deltagandekriterier

Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.

Urvalskriterier

Åldrar som är berättigade till studier

  • Vuxen
  • Äldre vuxen

Tar emot friska volontärer

Nej

Beskrivning

Inclusion Criteria:

  • Adult aged between 18 and 75 years.
  • Physically and mentally able to undergo treatment
  • Have not used antibiotics within 1 week before treatment.
  • Permanent molar teeth showing clinical and radiographic signs of chronic apical abscess and considered restorable.
  • Willing to participate in the study and able to provide written informed consent after receiving an explanation of the study.

Exclusion Criteria:

  • Systemic conditions that require antibiotic prophylaxis for routine dental treatment or other significant systemic disease.
  • Pregnant or breastfeeding women.
  • Participants with cognitive impairment.
  • Teeth with advanced mobility (greater than grade 2).
  • Teeth with periodontal pockets deeper than 4 mm.
  • Teeth with radiographic signs of root resorption.
  • Teeth with calcification or obliteration of the root canal.
  • Teeth with root fracture or that fracture during treatment.
  • Teeth with open apices.

Studieplan

Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.

Hur är studien utformad?

Designdetaljer

  • Primärt syfte: Behandling
  • Tilldelning: Randomiserad
  • Interventionsmodell: Parallellt uppdrag
  • Maskning: Ingen (Open Label)

Vapen och interventioner

Deltagargrupp / Arm
Intervention / Behandling
Experimentell: 5.25% sodium hypochlorite Irrigation
Participants received standard root canal treatment for molar teeth with chronic apical abscess using irrigation with 5.25 percent sodium hypochlorite. The procedure includes mechanical preparation, rinsing with sterile distilled water and 17 percent EDTA, placement of calcium hydroxide intracanal medicament, and final obturation. Root canal samples are collected from the same canal before treatment, after irrigation, and after calcium hydroxide medicament.
Procedur: Root canal treatment with 5.25% sodium hypochlorite irrigation
Standard root canal procedure in which the canal is irrigated with 5.25 percent sodium hypochlorite, followed by sterile distilled water and 17 percent EDTA, then calcium hydroxide intracanal medicament and final obturation, with bacterial sampling at three time points.
Experimentell: 3% sodium hypochloritel Irrigation
Participants received standard root canal treatment for molar teeth with chronic apical abscess using irrigation with 3 percent sodium hypochlorite. The procedure includes mechanical preparation, rinsing with sterile distilled water and 17 percent EDTA, placement of calcium hydroxide intracanal medicament, and final obturation. Root canal samples are collected from the same canal before treatment, after irrigation, and after calcium hydroxide medicament.
Procedur: Root canal treatment with 3% sodium hypochlorite irrigation
Standard root canal procedure in which the canal is irrigated with 3 percent sodium hypochlorite, followed by sterile distilled water and 17 percent EDTA, then calcium hydroxide intracanal medicament and final obturation, with bacterial sampling at three time points.

Vad mäter studien?

Primära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Change in root canal bacterial community profile
Tidsram: Baseline/S1 (before any treatment), immediately after irrigation (S2), and approximately 2 weeks after calcium hydroxide medicament (S3).
Bacterial community composition and diversity in root canal samples from molar teeth with chronic apical abscess, assessed using 16S rRNA PCR and DNA sequencing at three time points (before treatment, after irrigation, and after calcium hydroxide medicament).
Baseline/S1 (before any treatment), immediately after irrigation (S2), and approximately 2 weeks after calcium hydroxide medicament (S3).

Samarbetspartners och utredare

Det är här du hittar personer och organisationer som är involverade i denna studie.

Sponsor

Hasanuddin University

Utredare

  • Huvudutredare: Beatrix Zitzy Uniquen Enoch, DDS, Dental and Oral Hospital Hasanuddin University
  • Studierektor: Prof. Maria Tanumihardja, DDS, MDS, Dental and Oral Hospital Hasanuddin University

Publikationer och användbara länkar

Den som ansvarar för att lägga in information om studien tillhandahåller frivilligt dessa publikationer. Dessa kan handla om allt som har med studien att göra.

Allmänna publikationer

Studieavstämningsdatum

Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.

Studera stora datum

Studiestart (Faktisk)

13 oktober 2025

Primärt slutförande (Faktisk)

30 mars 2026

Avslutad studie (Faktisk)

18 maj 2026

Studieregistreringsdatum

Först inskickad

28 maj 2026

Först inskickad som uppfyllde QC-kriterierna

28 maj 2026

Första postat (Faktisk)

3 juni 2026

Uppdateringar av studier

Senaste uppdatering publicerad (Faktisk)

5 juni 2026

Senaste inskickade uppdateringen som uppfyllde QC-kriterierna

3 juni 2026

Senast verifierad

1 maj 2026

Mer information

Termer relaterade till denna studie

Nyckelord

Andra studie-ID-nummer

  • 265/KEPK FKG-RSGMP UH/EA/IX/20

Plan för individuella deltagardata (IPD)

Planerar du att dela individuella deltagardata (IPD)?

NEJ

IPD-planbeskrivning

Individual participant data will not be shared because of privacy considerations and institutional and ethics committee policies that restrict sharing of identifiable clinical data outside the study team.

Läkemedels- och apparatinformation, studiedokument

Studerar en amerikansk FDA-reglerad läkemedelsprodukt

Nej

Studerar en amerikansk FDA-reglerad produktprodukt

Nej

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