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CTRI Number  CTRI/2020/03/023721 [Registered on: 03/03/2020] Trial Registered Retrospectively
Last Modified On: 03/03/2020
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Preventive
Dentistry 
Study Design  Randomized, Parallel Group Trial 
Public Title of Study   Effect of Green tea on mutans streptococci 
Scientific Title of Study   Comparative evaluation of efficacy of Green tea and Chlorhexidine mouthrinses in reducing the Streptococcus mutans count in saliva - A Randomized Control Trial 
Trial Acronym   
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Priscilla Joys N 
Designation  Post graduate student 
Affiliation  Best Dental Science College, Madurai 
Address  271, Saradha Mill Road, Podanur, Coimbatore.
Department of Public Health Dentistry Best Dental Science College, Madurai - 625104
Madurai
TAMIL NADU
641023
India 
Phone  9003677047  
Fax  9003677047  
Email  mailpriscy18@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Muthu Karuppaiah 
Designation  Reader and Guide 
Affiliation  Best Dental Science College, Madurai 
Address  Department of Public Health Dentistry Best Dental Science College, Madurai

Madurai
TAMIL NADU
625104
India 
Phone  9488614366  
Fax    
Email  drmuthupcd@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Muthu Karuppaiah R 
Designation  Reader and Guide 
Affiliation  Best Dental Science College, Madurai 
Address  Department of Public Health Dentistry Best Dental Science College, Madurai

Madurai
TAMIL NADU
625104
India 
Phone  9488614366  
Fax    
Email  drmuthupcd@gmail.com  
 
Source of Monetary or Material Support  
Dr.Priscilla Joys.N MDS (Self) 271, saradha mill road, Podanur, coimbatore 641023 
 
Primary Sponsor  
Name  Self 
Address  271, Saradha Mill Road, Podanur, Coimbatore 
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 Priscilla JoysN  Senthamil college  Language lab, ground floor, (Adjacent to Principal office), Poondhotam, Madurai Main, Madurai, Tamil Nadu 625001
Madurai
TAMIL NADU 
9003677047

mailpriscy18@gmail.com 
 
Details of Ethics Committee  
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: K02||Dental caries,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  Chlorhexidine  5 ml of 0.2% Chlorhexidine, orally administered as mouthrinse. One time administration. 
Intervention  Green tea extract  5 ml of 2% green tea mouth rinse, orally administered as mouthrinse. One time administration. 
 
Inclusion Criteria  
Age From  17.00 Year(s)
Age To  25.00 Year(s)
Gender  Both 
Details  1. Those with at least one active caries lesion.
2. Those who brush only once daily 
 
ExclusionCriteria 
Details  1.Those Patients who received antibiotic therapy at last 3 weeks,
2.Those who had topical fluoride application at last 48 hours,
3.Those who had topical mouthwash application at last 48 hours and
4.Those who ate or drank within last 2 hours before the study
5.Those with limited manual dexterity.
6.Those with systemic illness/mental illness/physically handicapped
7.Those giving a history of allergy to any of the above constituents of mouthrinses.
8.Those who are pregnant
9.Those who are uncooperative. 
 
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 
mutans streptococci CFU/ml and pH of saliva taken in all the salivary samples  A salivary sample (sample A) was obtained from the subjects after which a 10% sucrose solution was given. After 7 minutes, Post rinse samples (sample B) were collected in After a waiting period of one hour, a pre rinse saliva (sample C). Following this, 2% Green tea or 0.2% Chlorhexidine rinse was given. After a 20 minute interval, a 10% sucrose solution was given for 2 minutes. After 7 minutes, Post rinse samples (sample B) were collected in the same manner. 
 
Secondary Outcome  
Outcome  TimePoints 
NIL 
 
Target Sample Size   Total Sample Size="40"
Sample Size from India="40" 
Final Enrollment numbers achieved (Total)= "39"
Final Enrollment numbers achieved (India)="39" 
Phase of Trial   Phase 3/ Phase 4 
Date of First Enrollment (India)   01/08/2016 
Date of Study Completion (India) 04/08/2016 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) Date Missing 
Estimated Duration of Trial   Years="0"
Months="0"
Days="5" 
Recruitment Status of Trial (Global)   Not Applicable 
Recruitment Status of Trial (India)  Completed 
Publication Details   not yet published 
Individual Participant Data (IPD) Sharing Statement

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

Brief Summary  
The present research is a randomized, parallel arm, controlled trial designed to compare the effect of 2% Green tea extract with 0.2% Chlorhexidine mouthrinse on the Mutans Streptococci count in the saliva and salivary pH. The results could be summarised as:
1. There was a statistically significant reduction in the Mutans Streptococci colonies in the saliva after 0.2% chlorhexidine mouthrinse.
2. There was a statistically significant reduction in the Mutans Streptococci colonies in the saliva after 2% Green tea extract mouthrinse.
3. Significant difference was observed between the Mutans Streptococcus Count (CFU/ml) between the 0.2% Chlorhexidine group and 2% Green tea group.
4. There is a rise in the salivary pH towards neutrality after rinsing with the 0.2% Chlorhexidine mouthrinse but this is not statistically significant.
5. The inhibition of the fall in the salivary pH after 2% Green tea extract mouthrinse is clearly demonstrated and is statistically significant.
Thus we can conclude that, 2% Green tea was considerably efficacious in reducing the Mutans Streptococci count
significantly, although not superior to the gold standard 0.2% Chlorhexidine. It proves to be a promising anticariogenic mouthrinse with its acid inhibition property in this research by maintaining the salivary pH near neutrality significantly, even after a sucrose challenge and can be used as a cost effective and safe caries inhibitory agent.
 
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