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Subgingival Lactobacillus Reuteri as an Adjunct to Non-Surgical Periodontal Therapy in Diabetic Patients (LREUTERI-DM)

11. juni 2026 opdateret af: Vo Thi Hue Truc, University of Medicine and Pharmacy at Ho Chi Minh City

Effect of Adjunctive Subgingival Lactobacillus Reuteri in Non-Surgical Periodontal Therapy for Periodontitis in Patients With Diabetes: A Randomized Controlled Clinical Trial

This randomized controlled clinical trial evaluates the adjunctive effect of subgingival administration of Lactobacillus reuteri probiotics in diabetic patients with Stage III Grade B or higher periodontitis receiving non-surgical periodontal therapy. Forty periodontal sites were randomly assigned to either a test group treated with scaling and root planing (SRP) plus subgingival Lactobacillus reuteri or a control group treated with SRP plus saline irrigation. Clinical periodontal parameters, microbiological outcomes, and glycated hemoglobin (HbA1c) levels were assessed at baseline, 1 month, and 3 months. The study aims to determine whether locally delivered probiotics provide additional clinical, microbiological, and glycemic benefits compared with SRP plus saline irrigation.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

Periodontitis is a chronic inflammatory disease associated with dysbiotic subgingival biofilms and is strongly influenced by diabetes mellitus. Chronic hyperglycemia may impair immune function and wound healing, resulting in increased periodontal destruction and poorer treatment outcomes. Non-surgical periodontal therapy based on scaling and root planing (SRP) remains the standard treatment; however, residual periodontal pockets may persist after therapy.

Lactobacillus reuteri probiotics have demonstrated antimicrobial, anti-inflammatory, and host-modulatory properties and may enhance periodontal healing. This randomized controlled clinical trial evaluated the adjunctive effects of subgingival administration of a liquid probiotic preparation containing Lactobacillus reuteri in diabetic patients with Stage III Grade B or higher periodontitis.

Forty periodontal sites were randomly allocated to either a test group receiving SRP plus subgingival Lactobacillus reuteri probiotics or a control group receiving SRP plus saline irrigation. A second application was performed at the 1-month visit. Clinical outcomes included plaque index, gingival index, bleeding on probing, probing pocket depth, and clinical attachment level. Glycemic control was evaluated using HbA1c levels, and microbiological analysis was performed using real-time PCR for Porphyromonas gingivalis, Tannerella forsythia, and Fusobacterium nucleatum.

Assessments were conducted at baseline, 1 month, and 3 months. The primary objective was to evaluate changes in clinical outcomes. Secondary objectives included microbiological and glycemic outcomes.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

5

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

    • Ho Chi Minh City
      • Ho Chi Minh City, Ho Chi Minh City, Vietnam, 700000
        • Faculty of Dentistry, University of Medicine and Pharmacy at Ho Chi Minh City

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Voksen
  • Ældre voksen

Tager imod sunde frivillige

Ingen

Beskrivelse

Inclusion Criteria:

  • Age ≥18 years.
  • Diagnosed with diabetes mellitus according to WHO criteria.
  • Stage III Grade B periodontitis or higher according to the 2017 AAP/EFP classification.
  • At least 15 remaining teeth.
  • Periodontal pockets ≥5 mm with bleeding on probing.
  • Clinical attachment loss ≥5 mm.

Exclusion Criteria:

  • Current smokers.
  • Pregnant or lactating women.
  • Use of antibiotics or anti-inflammatory medications within 1 month before enrollment.
  • Periodontal therapy within the previous 3 months.
  • Undergoing orthodontic treatment.
  • Presence of pulpal lesions or severe occlusal trauma.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Randomiseret
  • Interventionel model: Crossover opgave
  • Maskning: Tredobbelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: SRP + Lactobacillus reuteri
Subgingival Lactobacillus reuteri
Subgingival administration of liquid Lactobacillus reuteri following scaling and root planing. The probiotic solution was applied into periodontal pockets at baseline and re-applied after 1 month.
Aktiv komparator: SRP + Saline
Saline Control
Subgingival administration of sterile saline solution following scaling and root planing. Saline was applied into periodontal pockets at baseline and re-applied after 1 month using the same protocol as the test intervention.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Bleeding on Probing (BOP)
Tidsramme: Baseline to 3 months
Bleeding on probing was assessed at baseline, 1 month, and 3 months after treatment. Changes in the percentage of bleeding sites were used to evaluate periodontal inflammation.
Baseline to 3 months
Change in Probing Pocket Depth (PPD)
Tidsramme: Baseline to 3 months.
Probing pocket depth was measured using a UNC-15 periodontal probe at baseline, 1 month, and 3 months after treatment. The primary outcome was the change in PPD from baseline to 3 months.
Baseline to 3 months.

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Change in Clinical Attachment Level (CAL)
Tidsramme: Baseline to 3 months.
Clinical attachment level (CAL) was measured using a UNC-15 periodontal probe. Changes in CAL was assessed to evaluate periodontal attachment gain following treatment.
Baseline to 3 months.
Changes in Glycated Hemoglobin (HbA1c)
Tidsramme: Baseline, 1 month, and 3 months
HbA1c levels were assessed at baseline, 1 month, and 3 months following treatment to evaluate glycemic control.
Baseline, 1 month, and 3 months
Changes in Subgingival Periodontal Pathogens
Tidsramme: Baseline to 3 months
Quantitative levels of Porphyromonas gingivalis, Tannerella forsythia, Fusobacterium nucleatum were assessed using microbiological analysis.
Baseline to 3 months

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Efterforskere

  • Studiestol: Thu Nguyen Ngoc Yen, PhD, Faculty of Dentistry, University of Medicine and Pharmacy at Ho Chi Minh City

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

14. november 2025

Primær færdiggørelse (Faktiske)

15. april 2026

Studieafslutning (Faktiske)

30. april 2026

Datoer for studieregistrering

Først indsendt

11. juni 2026

Først indsendt, der opfyldte QC-kriterier

11. juni 2026

Først opslået (Faktiske)

17. juni 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

17. juni 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

11. juni 2026

Sidst verificeret

1. juni 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • THS-PERIO-2026-01

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

IPD-planbeskrivelse

Individual participant data will not be made publicly available

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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