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CTRI Number  CTRI/2025/12/099370 [Registered on: 18/12/2025] Trial Registered Prospectively
Last Modified On: 17/12/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Dentistry 
Study Design  Randomized, Parallel Group Trial 
Public Title of Study   Which root canal irrigant works better - Plantaricin-149 or Chlorhexidine? A study on pain and infection 
Scientific Title of Study   The effect of antimicrobial peptide plantaricin-149 in comparison with chlorhexidine as final root canal irrigant on the reduction of microbial load and postoperative pain in root canals with necrotic pulp - a randomised controlled trial 
Trial Acronym  NIL 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Nibedita Sahoo 
Designation  Post graduate student 
Affiliation  S.C.B Dental College and Hospital, Cuttack 
Address  Department of Conservative Dentistry and Endodontics, S.C.B Dental College and Hospital, Cuttack

Cuttack
ORISSA
753007
India 
Phone  7978603144  
Fax    
Email  nibedita545kunu@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Rashmi Rekha Mallick 
Designation  Assistant Professor 
Affiliation  S.C.B Dental College and Hospital, Cuttack 
Address  Department of Conservative Dentistry and Endodontics, S.C.B Dental College and Hospital, Cuttack

Cuttack
ORISSA
753007
India 
Phone  8895708553  
Fax    
Email  drrashmiendo1980@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Nibedita Sahoo 
Designation  Post graduate student 
Affiliation  S.C.B Dental College and Hospital, Cuttack 
Address  Department of Conservative Dentistry and Endodontics, S.C.B Dental College and Hospital, Cuttack

Cuttack
ORISSA
753007
India 
Phone  7978603144  
Fax    
Email  nibedita545kunu@gmail.com  
 
Source of Monetary or Material Support  
S.C.B Dental College and Hospital, Cuttack 
 
Primary Sponsor  
Name  Dr Nibedita Sahoo 
Address  Department of Conservative Dentistry and Endodontics, S.C.B Dental College and Hospital, Cuttack, pin- 753007, Odisha 
Type of Sponsor  Other [Self] 
 
Details of Secondary Sponsor  
Name  Address 
NIL  NIL 
 
Countries of Recruitment     India  
Sites of Study  
No of Sites = 1  
Name of Principal Investigator  Name of Site  Site Address  Phone/Fax/Email 
Dr Nibedita Sahoo  S.C.B Dental College and Hospital, Cuttack  First floor, Department of Conservative Dentistry and Endodontics,PIN-753007,Cuttack
Cuttack
ORISSA 
7978603144

nibedita545kunu@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
INSTITUTIONAL ETHICS COMMITTEE(IEC) SCB DENTAL COLLEGE AND HOSPITAL,CUTTACK, ODISHA  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: K041||Necrosis of pulp,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  Chlorhexidine  2% Chlorhexidine will be used as final irrigant 
Intervention  Peptide Plantaricin-149  0.013% Plantaricin-149 antimicrobial peptide will be used as final irrigant 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  35.00 Year(s)
Gender  Both 
Details  1. Single rooted tooth
2. Presence of one root canal
3. Patients whose teeth have pulp necrosis, which will be confirmed by
absence of a response to pulp sensitivity tests and radiographic
evidence of apical periodontitis or periapical radiolucency.
4. Age of the patients:18 – 35 years old
5. No spontaneous pre-treatment pain or at the time of the appointment. 
 
ExclusionCriteria 
Details  1. Root canal treated teeth
2. Patients who used antibiotics in the past 3 months
3. Any known systemic disease
4. Teeth that could not be properly isolated
5. Advanced Periodontal disease
6. Incomplete root formation 
 
Method of Generating Random Sequence   Permuted block randomization, fixed 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Participant and Outcome Assessor Blinded 
Primary Outcome  
Outcome  TimePoints 
Microbial load reduction  S1-After access opening and before cleaning and shaping
S2-After irrigation with sodium hypochlorite and EDTA
S3- After final irrigation 
 
Secondary Outcome  
Outcome  TimePoints 
Postoperative pain evaluation  After 24 hours,
48 hours and
7th day 
 
Target Sample Size   Total Sample Size="40"
Sample Size from India="40" 
Final Enrollment numbers achieved (Total)= "Applicable only for Completed/Terminated trials"
Final Enrollment numbers achieved (India)="Applicable only for Completed/Terminated trials" 
Phase of Trial   Phase 4 
Date of First Enrollment (India)   01/01/2026 
Date of Study Completion (India) Applicable only for Completed/Terminated trials 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) Applicable only for Completed/Terminated trials 
Estimated Duration of Trial   Years="0"
Months="6"
Days="0" 
Recruitment Status of Trial (Global)   Not Applicable 
Recruitment Status of Trial (India)  Not Yet Recruiting 
Publication Details   N/A 
Individual Participant Data (IPD) Sharing Statement

Will individual participant data (IPD) be shared publicly (including data dictionaries)?  

Response - NO
Brief Summary  

OBJECTIVES

To compare and evaluate the effect of antimicrobial peptide Plantaricin-149 in comparison with chlorhexidine as final root canal irrigant solution on the reduction of microbial load and postoperative pain

NULL HYPOTHESIS

There will be no difference in bacterial count reduction between two groups of final irrigating solutions and no influence of the final irrigating solutions on postoperative  pain

STUDY PROTOCOL

Local anaesthesia 2% lidocaine with 1:100000 epinephrine will be given. Rubber dam isolation will be done and access cavity preparation will be performed to obtain straight-line canal access. Canal exploration will be done with a size 10 K-file, and working length will be determined using an electronic apex locator and confirmed radiographically. Sample 1 (S1) will be collected using three sterile size-20 paper points inserted sequentially to full working length for 60 seconds each. Root canal instrumentation will then be performed with rotary instruments. After each instrumentation, irrigation will be done with 2 mL of 3% NaOCl using a 30-G side-vented needle, followed by a 3 mL sterile saline rinse. Smear layer will be removed with 5 mL of 17% EDTA and passive ultrasonic activation for 60 seconds, followed by a saline rinse. Patency will be confirmed with a size 20 K-file. 

Sample 2 (S2) will be obtained similarly. Final irrigation (5 mL, 90 sec) will be performed using the assigned solution—Group 1: 0.013% Plantaricin 149 peptide, Group 2: 2% Chlorhexidine—followed by passive ultrasonic activation for 60 seconds. Sample 3 (S3) will then be collected as per previous sampling procedures. All paper points from S1, S2, and S3 will be immediately transferred to Cryotubes containing buffer, stored at –20°C, and transported for qPCR analysis. The access cavity will be sealed with a 2 mm temporary restoration.

After 7 days, obturation followed by composite restoration will be done. Postoperative pain will be recorded at 24 h, 48 h, and 7 days using a modified VAS scale (1–none, 2–slight, 3–moderate, 4–severe). Pain reporting will be obtained via scheduled telephone follow-up. Analgesic requirements will be documented, and Ibuprofen 400 mg will be provided in case of emergency.

 

 
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