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CTRI Number  CTRI/2018/03/012667 [Registered on: 19/03/2018] Trial Registered Prospectively
Last Modified On: 20/08/2022
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Dentistry 
Study Design  Randomized, Parallel Group Trial 
Public Title of Study   Effectiveness of Sodium Hypochlorite, Diode Laser And Photodynamic Therapy In non vital teeth undergoing root canal treatment  
Scientific Title of Study   Comparative Evaluation of Disinfecting Potential of Sodium Hypochlorite, Diode Laser And Photodynamic Therapy In Non- vital Teeth With or Without Periapical Rarefaction - A Double Blind Randomized Clinical Study 
Trial Acronym   
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Pranav Vanajassun Purushothaman 
Designation  Assistant Professor 
Affiliation  SRM Dental college 
Address  Department of Conservative Dentistry and Endodontics, SRM Dental college Bharathi Salai Ramapuram, Chennai

Chennai
TAMIL NADU
600089
India 
Phone  9884683059  
Fax    
Email  docpranav@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Pranav Vanajassun Purushothaman 
Designation  Assistant Professor 
Affiliation  SRM Dental college 
Address  Department of Conservative Dentistry and Endodontics, SRM Dental college Bharathi Salai Ramapuram, Chennai

Chennai
TAMIL NADU
600089
India 
Phone  9884683059  
Fax    
Email  docpranav@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Sadhana Rai 
Designation  Post graduate student 
Affiliation  SRM Dental College 
Address  SRM Dental college Bharathi Salai Ramapuram

Chennai
TAMIL NADU
600089
India 
Phone    
Fax    
Email  sadhana.rai1@gmail.com  
 
Source of Monetary or Material Support  
Department of Conservative Dentistry and Endodontics; SRM Dental College, Ramapuram, Chennai, Tamil Nadu, India 
 
Primary Sponsor  
Name  Sadhana Rai 
Address  SRM Dental College Bharathi Salai Ramapuram 
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 Sadhana Rai  Department of Conservative Dentistry and Endodontics  2nd Floor, Department of Conservative Dentistry and Endodontics, SRM Dental college Bharathi Salai Ramapuram, Chennai
Kancheepuram
TAMIL NADU 
9940292745

sadhana.rai1@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
SRM Institutional Ethical Commitee  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied
Modification(s)  
Health Type  Condition 
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Sodium Hypochlorite 2.5% Diode Laser 808 nm Diode laser 660 nm   Root canals will be disinfected using sodium hypochlorite or diode laser 808nm or diode laser 660nm after cleaning and shaping. 
Comparator Agent  Sodium hypochlorite, diode laser 808nm and diode laser 660nm  the disinfection potential of sodium hypochlorite, diode laser 808nm and diode laser 660nm will be compared and evaluated 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  60.00 Year(s)
Gender  Both 
Details  1.Patients with PAI score 1, 2 and 3
2.Patients categorized under ASA 1and 2
3.Patients with non vital teeth with or without periapical rarefaction in single rooted teeth with closed apices, all indicated for root canal treatment.
 
 
ExclusionCriteria 
Details  1.Patients categorized under ASA 3 and 4.
2.Patients with PAI score 4 and 5.
3.Patients who underwent 1 week of systemic antibiotic therapy.
4.Patients with non vital teeth with severe root curvature of more than 45 degree.
5.Patients with endo-perio lesions
6.Patients with root canal attempted teeth, fracture teeth, calcified root canals, root resorption and re-infection in endodontically treated teeth.
 
 
Method of Generating Random Sequence   Coin toss, Lottery, toss of dice, shuffling cards etc 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Participant, Investigator and Outcome Assessor Blinded 
Primary Outcome  
Outcome  TimePoints 
To reduce microbial load in root canals of non vital teeth with or without periapical lesion using proposed disinfecting protocols.  5 min 
 
Secondary Outcome  
Outcome  TimePoints 
To promote periapical healing, no clinical signs and symptoms of pain, swelling, tender on percussion and sinus tract.  7 days 
 
Target Sample Size   Total Sample Size="60"
Sample Size from India="60" 
Final Enrollment numbers achieved (Total)= "0"
Final Enrollment numbers achieved (India)="45" 
Phase of Trial   Phase 1 
Date of First Enrollment (India)   12/04/2018 
Date of Study Completion (India) 13/02/2019 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) Date Missing 
Estimated Duration of Trial   Years="0"
Months="0"
Days="0" 
Recruitment Status of Trial (Global)
Modification(s)  
Not Applicable 
Recruitment Status of Trial (India)  Completed 
Publication Details   none yet 
Individual Participant Data (IPD) Sharing Statement

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

Brief Summary   This study is a Double Blind Randomized Clinical Study to compare and evaluate the Disinfecting Potential Of Sodium Hypochlorite, Diode Laser And Photodynamic Therapy in Non-vital Teeth With Or Without Periapical Rarefaction. The study will be conducted inSRM Dental college, Ramapuram and the microbial analysis will be done in Sri Ramachandra Dental College, Porur. The primary outcome is to reduce microbial load in root canals in nonvital teeth with or withour periapical lesion using Sodium Hypochlorite, Diode Laser and Photodynamic therapy. Secondary outcome is to promote periapical healing, no clinical signs and symptoms of pain, swelling, tender on percussion and sinus tract.

This in vivo study follows double blind randomized clinical trial performed by 3 operators. 1st operator diagnoses and allots the patients randomly in either one of the disinfection group after diagnosis.The respective disinfection protocol groups were as follows:
• Group I: 5.25% Sodium hypochlorite (n=15)
• Group II: 808nm Diode laser (n=15)
• Group III: 660nm Diode laser with methylene blue dye(n=15)
The 2nd operator does the access opening using a sterile round bur and rotary hand piece. Canals were negotiated using 10# k hand file and working length determination was done using apex locator. Followed by cleaning and shaping with rotary Protapers (F4 size) along with EDTA and copious irrigation of sterile saline. Disinfection of the root canals were done using one of the disinfecting protocols according to the respective allotted group.
• Group I: Canals irrigated with 1mL of 5.25% NaOCl for 2 minutes using 27 guage needle.
• Group II: Canals irradiated with 808 nm diode laser with 0.1-7mW for 30 seconds
• Group III: Photosensitizer(Methylene blue) allowed to remain in the canal for 5mins, followed by irradiation with 660nm diode laser for 4mins.
The 3rd operator takes the pre instrumentation and post disinfection sample using paper points. The collected samples were subjected to flow cytometer in order to analyze pre and post live microbial count.
 
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