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Adjunctive Oral Probiotics in Endodontic Retreatment: Effects on Postoperative Pain and RANKL/OPG Levels (RANKL/OPG)
The Effect of Systemic Administration of Probiotics and Intra-Canal Medications on Level of Nuclear Factor Kappa B Ligand, Osteoprotegerin and Postoperative Pain in Patients With Chronic Apical Periodontitis: (Randomized Controlled Clinical Trial)
Studie Overzicht
Toestand
Conditie
Gedetailleerde beschrijving
Post-treatment chronic apical periodontitis is an inflammatory condition caused by persistent microbial infection within the root canal system, characterized by progressive periapical bone destruction mediated by host immune-inflammatory mechanisms. Root canal retreatment remains the treatment of choice for failed endodontic cases; however, postoperative pain and incomplete resolution of inflammatory mediators remain common concerns. Clinical evidence demonstrates that postoperative pain following endodontic retreatment is influenced by microbial persistence, host inflammatory response, and intracanal medication protocols.
The RANK/RANKL/OPG axis is a key regulator of osteoclastic activity and periapical bone resorption. Elevated RANKL levels and altered RANKL/OPG ratio are associated with active periapical bone destruction. Modulation of this pathway may improve healing outcomes. Recent studies suggest that probiotics can regulate immune response, reduce inflammatory cytokines, and decrease RANKL expression.
This randomized clinical trial includes patients diagnosed with previously root-filled teeth presenting with chronic apical periodontitis indicated for non-surgical retreatment.
Standardized retreatment procedures are performed under aseptic conditions. Periapical exudate samples collected for biochemical analysis of RANKL and OPG levels at predetermined time points. Postoperative pain is assessed to investigate whether systemic probiotic administration can act as a host-modulating adjunct in endodontic retreatment and improve both symptomatic and biological healing outcomes.
Studietype
Inschrijving (Werkelijk)
Fase
- Fase 4
Contacten en locaties
Studie Locaties
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Cairo Governorate
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Cairo, Cairo Governorate, Egypte, 11566
- Faculty of dentistry, Ain shams university
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Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
- Volwassen
Accepteert gezonde vrijwilligers
Beschrijving
Inclusion Criteria:
- Previously treated failed single rooted teeth with chronic apical periodontitis.
- No use of antibiotic three months before treatment.
- Patients are free of any systemic disease.
- Positive patient acceptance for participation
Exclusion Criteria:
- Teeth that are badly broken down with difficult isolation.
- Signs of acute infection, root fracture, root surface caries, swellings or ankylosis
- Periodontally affected teeth with pockets deeper than 4mm.
- Pregnant or lactating woman.
- Patients who needs any prophylactic antibiotic.
- Patients with allergy to pollen.
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Behandeling
- Toewijzing: Gerandomiseerd
- Interventioneel model: Parallelle opdracht
- Masker: Dubbele
Wapens en interventies
Deelnemersgroep / Arm |
Interventie / Behandeling |
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Experimenteel: Oral probiotics + Local Ca(OH)2 ICM
Following endodontic retreatment, calcium hydroxide placed as an intracanal medicament .
Participants receive Linex Adult® (oral probiotics: Lactobacillus acidophilus, Bifidobacterium animalis ), one capsule daily for 21 days.
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Linex Adult® is an oral probiotic formulation containing Lactobacillus acidophilus, Bifidobacterium animalis, It is administered as one capsule once daily for 21 days.
Andere namen:
Intracanal medication kept for 21 days
Andere namen:
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Experimenteel: Oral probiotics + Local Propolis ICM
Following endodontic retreatment, propolis placed as an intracanal medicament.
Participants receive Linex Adult® (oral probiotics: Lactobacillus acidophilus, Bifidobacterium animalis), one capsule daily for 21 days.
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Linex Adult® is an oral probiotic formulation containing Lactobacillus acidophilus, Bifidobacterium animalis, It is administered as one capsule once daily for 21 days.
Andere namen:
Intracanal medication kept for 21 days
Andere namen:
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Experimenteel: Oral probiotics + Empty canal
Following endodontic retreatment, the canal was left empty without intracanal medicament.
Participants received Linex Adult® (oral probiotics: Lactobacillus acidophilus, Bifidobacterium animalis), one capsule daily for 21 days.
|
Linex Adult® is an oral probiotic formulation containing Lactobacillus acidophilus, Bifidobacterium animalis, It is administered as one capsule once daily for 21 days.
Andere namen:
Empty canal for 21 days
Andere namen:
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Actieve vergelijker: Oral placebo + Local Ca(OH)2 ICM
Following endodontic retreatment, Ca(OH)2 was placed as an intracanal medicament.
Participants received placebo, one capsule daily for 21 days
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Intracanal medication kept for 21 days
Andere namen:
Placebo capsule for 21 days
Andere namen:
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Actieve vergelijker: Oral placebo+ Local propolis ICM
Following endodontic retreatment, propolis was placed as an intracanal medicament.
Participants received placebo, one capsule daily for 21 days
|
Intracanal medication kept for 21 days
Andere namen:
Placebo capsule for 21 days
Andere namen:
|
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Placebo-vergelijker: Oral placebo + Empty canal
Following endodontic retreatment, the canal was left empty without intracanal medicament.
Participants received Linex Adult® (oral probiotics: Lactobacillus acidophilus, Bifidobacterium animalis), one capsule daily for 21 days.
|
Empty canal for 21 days
Andere namen:
Placebo capsule for 21 days
Andere namen:
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Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
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The effect on RANKL and OPG levels in teeth with chronic apical periodontitis.
Tijdsspanne: (S1) measured in the first visit Immediately post-instrumentation and before ICM placement or oral supplement administration. (S2) After 21 days, immediately after removal of ICM and before obturation.
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Level of RANKL and OPG measured with periapical samples (S1) and (S2) and analysed using ELISA test
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(S1) measured in the first visit Immediately post-instrumentation and before ICM placement or oral supplement administration. (S2) After 21 days, immediately after removal of ICM and before obturation.
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Secundaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
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The effect on postoperative pain.
Tijdsspanne: Inter-appointment pain: baseline (start of the first visit), 4, 12, 24, 48, and 72 hours, and Week 1 and Week 2 after the first visit. Post-obturation pain: baseline (start of the second visit), 4, 12, 24, 48, and 72 hours after obturation.
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Pain level measured using the Numeric Rating Scale (NRS), ranging from 0 (no pain) to 10 (worst possible pain), to evaluate inter-appointment pain between the first and second retreatment visits and post-obturation pain after the second retreatment visit and root canal obturation.
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Inter-appointment pain: baseline (start of the first visit), 4, 12, 24, 48, and 72 hours, and Week 1 and Week 2 after the first visit. Post-obturation pain: baseline (start of the second visit), 4, 12, 24, 48, and 72 hours after obturation.
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Medewerkers en onderzoekers
Sponsor
Onderzoekers
- Studie directeur: Abeer A.Elhakim El Gendy, PHD, Professor of Endodontics, AinShams university
Publicaties en nuttige links
Studie record data
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Primaire voltooiing (Werkelijk)
Studie voltooiing (Werkelijk)
Studieregistratiedata
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Meer informatie
Termen gerelateerd aan deze studie
Trefwoorden
Aanvullende relevante MeSH-voorwaarden
Andere studie-ID-nummers
- END 20-15 P
Plan Individuele Deelnemersgegevens (IPD)
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