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CTRI Number  CTRI/2025/08/092295 [Registered on: 04/08/2025] Trial Registered Prospectively
Last Modified On: 01/08/2025
Post Graduate Thesis  No 
Type of Trial  Interventional 
Type of Study   Preventive
Dentistry
Behavioral 
Study Design  Randomized, Parallel Group, Active Controlled Trial 
Public Title of Study   Exploring the role of color – changing toothpaste for improving children’s oral hygiene behavior 
Scientific Title of Study   Exploring the role of a novel color – changing toothpaste as an aid for improving children’s oral hygiene behavior: an in vivo study 
Trial Acronym  NIL 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Nithya Annie Thomas 
Designation  Reader 
Affiliation  Manipal Academy of Higher Education 
Address  Department of Pediatric and preventive dentistry, Manipal college of dental sciences, Manipal academy of Higher education
Manipal college of dental sciences, Madhav Nagar, Eshwar nagar
Udupi
KARNATAKA
576104
India 
Phone  8129773173  
Fax    
Email  nithya.thomas@manipal.edu  
 
Details of Contact Person
Scientific Query
 
Name  Nithya Annie Thomas 
Designation  Reader 
Affiliation  Manipal Academy of Higher Education 
Address  Department of Pediatric and preventive dentistry, Manipal college of dental sciences, Manipal academy of Higher education
Manipal college of dental sciences, Madhav Nagar, Eshwar nagar
Udupi
KARNATAKA
576104
India 
Phone  8129773173  
Fax    
Email  nithya.thomas@manipal.edu  
 
Details of Contact Person
Public Query
 
Name  Nithya Annie Thomas 
Designation  Reader 
Affiliation  Manipal Academy of Higher Education 
Address  Department of Pediatric and preventive dentistry, Manipal college of dental sciences, Manipal academy of Higher education
Manipal college of dental sciences, Madhav Nagar, Eshwar nagar
Udupi
KARNATAKA
576104
India 
Phone  8129773173  
Fax    
Email  nithya.thomas@manipal.edu  
 
Source of Monetary or Material Support  
Nil 
 
Primary Sponsor  
Name  Star Dental Care Private Limited 
Address  1st floor, ELDECO CENTRE, near Malviya Nagar metro station Delhi, 110017  
Type of Sponsor  Pharmaceutical industry-Indian 
 
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 
Nithya Annie Thomas  Manipal college of dental sciences  Department of Pediatric and preventive dentistry, MCODS, Manipal
Udupi
KARNATAKA 
8129773173

nithya.thomas@manipal.edu 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Kasturba Medical College/Kasturba Hospital Institutional Ethical Committee  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Healthy Human Volunteers  Healthy school children between the ages of 6-12 years 
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  G1  Group 1 (G1) will receive a colour-changing toothpaste that turns purple after 2 minutes to show that brushing is complete. A demonstration of the correct brushing method (Modified Bass technique) will be provided to all participants, and each child will receive their assigned toothpaste accordingly. The total duration of the study is 10 weeks. During this period, the child will need to brush their teeth twice a day — once in the morning and once in the evening — and record each brushing session in a log provided in the booklet 
Comparator Agent  G2  Group 2 (G2), you will receive a non colour changing toothpaste. A demonstration of the correct brushing method (Modified Bass technique) will be provided to all participants, and each child will receive their assigned toothpaste accordingly. The total duration of the study is 10 weeks. During this period, the child will need to brush their teeth twice a day — once in the morning and once in the evening — and record each brushing session in a log provided in the booklet 
 
Inclusion Criteria  
Age From  6.00 Year(s)
Age To  12.00 Year(s)
Gender  Both 
Details  1- Healthy children with no systemic or medical conditions that would interfere with the
study
2- Parents/ caretakers who consent to their child’s participation in the study
3- Children able to brush independently
4- Children not undergoing any orthodontic treatment 
 
ExclusionCriteria 
Details  1- Children with a history of allergic reactions to toothpaste ingredients
2- Children who have received extensive dental treatments during the study period 
 
Method of Generating Random Sequence   Permuted block randomization, variable 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Open Label 
Primary Outcome  
Outcome  TimePoints 
1- Improved brushing techniques: Children using the color changing toothpaste are expected to show better plaque removal
2- Increased motivation: The colour changing feature is anticipated to make brushing more engaging and motivate children to brush consistently
3- Enhanced long term oral hygiene: We presume that the experimental group will maintain better oral hygiene habits over time, leading to improved oral health outcomes 
BASELINE, WEEK5, WEEK10 
 
Secondary Outcome  
Outcome  TimePoints 
Brushing Frequency & Duration:
Self-reported brushing logs maintained by children/parents to monitor frequency (twice a day adherence) & brushing duration.

Long-Term Oral Hygiene Behaviour:
Evaluated via follow-up questionnaire responses & sustained plaque reduction trends, indicating formation of consistent habits.

User Satisfaction & Enjoyment:
Assessed through child & parent feedback at study conclusion, focusing on product experience, ease of use, & overall acceptability. 
Expected Result: Children using color-changing toothpaste will demonstrate better brushing compliance over time. 
 
Target Sample Size   Total Sample Size="100"
Sample Size from India="100" 
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   N/A 
Date of First Enrollment (India)   14/08/2025 
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="4"
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 - YES
  1. What data in particular will be shared?
    Response - All of the individual participant data collected during the trial, after de-identification.

  2. What additional supporting information will be shared?
    Response - Informed Consent Form

  3. Who will be able to view these files?
    Response - Researchers whose proposed use of the data has been approved by an independent review committee identified for this purpose.

  4. For what types of analyses will this data be available?
    Response - For individual participant data meta-analysis.

  5. By what mechanism will data be made available?
    Response - Proposals should be directed to [nithyaannie@gmail.com].

  6. For how long will this data be available start date provided 02-01-1970 and end date provided 02-01-1970?
    Response - Beginning 9 months and ending 36 months following article publication.

  7. Any URL or additional information regarding plan/policy for sharing IPD? 
    Additional Information - NIL
Brief Summary   Maintaining sound oral health, particularly in children, is essential, as poor oral hygiene can lead to a myriad of dental issues, including early childhood caries. However, many children struggle with developing consistent and effective brushing habits, often due to lack of motivation, poor comprehension of brushing techniques, and the monotony of the chore. Ensuring children adopt and maintain proper oral hygiene practices is a significant challenge for parents, caregivers and healthcare professionals. An innovative approach to improving children’s oral hygiene behaviors is by using a colour changing toothpaste. This product is designed to provide visual feedback during brushing by changing colour to purple after two minutes of brushing. This colour change helps children to identify that the brushing time is complete. The theory behind a colourchanging toothpaste is that it visually highlights the time needed to complete toothbrushing. By incorporating a fun, interactive element into the oral hygiene routine, the colour changing toothpaste could increase children’s engagement, making brushing a more exciting and rewarding experience. There is sparse scientific evidence exploring the true effectiveness of this novel toothpaste to improving children’s brushing technique, motivating them to brush regularly thereby reducing plaque buildup. While evidence suggests that children may find such products engaging, there has been little rigorous research to assess their potential to enhance oral hygiene behaviors systematically. This study aims to fill this gap by investigating the role of color changing toothpaste in influencing children’s oral hygiene behaviors, specifically focusing on the following key areas: Improvement in brushing technique, Increased motivation, Long term oral hygiene habits 
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