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CTRI Number  CTRI/2025/09/094021 [Registered on: 01/09/2025] Trial Registered Prospectively
Last Modified On: 31/08/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Biological
Medical Device
Surgical/Anesthesia
Other (Specify) [Laser therapy ]  
Study Design  Randomized, Parallel Group Trial 
Public Title of Study   Comparative Evaluation of Laser assisted Ablative Versus Non-ablative Gingival Depigmentation: A Randomized Clinical Trial 
Scientific Title of Study   Comparative Evaluation of Laser assisted Ablative Versus Non-ablative Gingival Depigmentation : A Rabdomized Clinical 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  Shruti Singh 
Designation  JR 3 
Affiliation  Saraswati Dental College and Hospital  
Address  233 A Saraswati Dental College

Lucknow
UTTAR PRADESH
-227105
India 
Phone  8707698  
Fax    
Email  shrutisingh22624@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Shruti Singh 
Designation  Post Graduate Student  
Affiliation  Saraswati Hospital & Research Centre 
Address  233 A Saraswati Dental College
604 B block, Shiva Apartment, Moti vihar Society, rawatpur crossing sarvodaya nagar, kanpur
Lucknow
UTTAR PRADESH
-227105
India 
Phone  8707698  
Fax    
Email  shrutisingh22624@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Shruti Singh 
Designation  JR 3 
Affiliation  Saraswati Dental College and Hospital  
Address  233 A Saraswati Dental College


UTTAR PRADESH
-227105
India 
Phone  8707698  
Fax    
Email  shrutisingh22624@gmail.com  
 
Source of Monetary or Material Support  
Saraswati Dental College & Hospital, Lucknow  
 
Primary Sponsor  
Name  Saraswati Dental College & Research Centre 
Address  233 Faizabad road saraswati Dental College & Hospital Lucknow 227105 
Type of Sponsor  Research institution and hospital 
 
Details of Secondary Sponsor  
Name  Address 
Shruti singh   233-A Faizabad road, Saraswati Dental College & Hospital, Lucknow 
 
Countries of Recruitment     India  
Sites of Study  
No of Sites = 1  
Name of Principal Investigator  Name of Site  Site Address  Phone/Fax/Email 
Shruti Singh  Saraswati Dental College and Hospital  Ayodhya Road Department of Periodontology Room Number: 04
Lucknow
UTTAR PRADESH 
08707698123

shrutisingh22624@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 2  
Name of Committee  Approval Status 
Institutional Human Ethics Committee  Approved 
Institutional Human Ethics Committee  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Healthy Human Volunteers  No systemic disease or condition  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  Laser assisted Ablative Gingival Depigmentation Procedure   Laser assisted Ablative Gingival Depigmentation Procedure employed the use of 940 nm wavelength, power of 0.9 watt, in continuous wave mode with laser tip in contact with the tissue surface 
Intervention  Laser assisted Non-Ablative Gingival Depigmentation Procedure  Laser assisted Non-Ablative Gingival Depigmentation Procedure employed the use of 445 nm wavelength, power of 0.9 watt, in continuous wave mode with laser tip in non-contact mode 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  35.00 Year(s)
Gender  Both 
Details  18 to 35 years of age  
 
ExclusionCriteria 
Details  1.The gingival hyperpigmentation that is secondary as a result of a systemic/ congenital condition/ disorder e.g. McCune Albright syndrome, Hutchinson Gilford Progeria Syndrome, Dyskeratosis congentia, Familial Progressive hyperpigmentation etc.
2. Participants with gingival hyperpigmentation due to the use of medications e. g. tetracycline.
3. Participants who were chronic smokers (self-reported)
4. Participants contraindicated for laser therapy (with phototoxicity, oral malignancy)
 
 
Method of Generating Random Sequence   Coin toss, Lottery, toss of dice, shuffling cards etc 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Investigator Blinded 
Primary Outcome  
Outcome  TimePoints 
clinician reported outcomes (Dummet-Gupta oral pigmentation Index, Melanin Index, Gingival Pigmentation Index  Baseline, 1 week, 1 month and 3 months. 
 
Secondary Outcome  
Outcome  TimePoints 
Patient Post Surgical Discomfort Score, Patient Satisfaction Score, Patient Esthetic Score  Baseline, 1 week, 1 month and 3 month 
Patient Post Surgical Discomfort Score (PPSDS), Patient Esthetic Score (PES), Patient Satisfaction Score (PSS)  PPSDS- 24 hours after intervention
PES- Baseline, 1 week, 1 month and 3 months
PSS- 1 week, 1 month, 3 months. 
 
Target Sample Size   Total Sample Size="30"
Sample Size from India="30" 
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)   12/09/2025 
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="1"
Months="0"
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   The present split-mouth, prospective, single-centered, parallel group, non-placebo control, double- blinded (investigator and observer) simple randomized comparative clinical trial was conducted in the Department of Periodontology, Saraswati Dental College and Hospital, Lucknow, between April 2023 to December 2024. The study design and protocol were conducted in accordance with ethical principles laid down in Helsinki declaration 1998 revised 2013. After approval from Institutional Research and Development Committee (SDC/IRDC/2022/MDS/13) and Institutional Human Ethical Committee (SDC&H/IHEC/2022/MDS/13), all the participants were informed about the study and written informed consent were obtained from the patients in patient’s vernacular language. 
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