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CTRI Number  CTRI/2025/02/081129 [Registered on: 21/02/2025] Trial Registered Prospectively
Last Modified On: 18/02/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Dentistry 
Study Design  Randomized, Parallel Group Trial 
Public Title of Study   A study on the effects of orthodontic treatment done with or without friction mechanics for moving the front teeth back using 3-D radiograph. 
Scientific Title of Study   Effectiveness of friction and frictionless mechanics during en-masse retraction of anterior teeth using CBCT—a randomized 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  Dr Shalini D 
Designation  Junior Resident 
Affiliation  Centre for Dental Education and Research 
Address  4th floor Division of Orthodontics and Dentofacial Deformities CDER, AIIMS, Block D2, Ansari Nagar East, New Delhi

New Delhi
DELHI
110029
India 
Phone  8760434135  
Fax    
Email  shalinid2804@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Prabhat Kumar Chaudhari 
Designation  Additional Professor 
Affiliation  Centre for Dental Education and Research 
Address  Room No 407, 4th floor, Division of Orthodontics and Dentofacial Deformities, CDER, AIIMS Block D2, Ansari Nagar East New Delhi

New Delhi
DELHI
110029
India 
Phone  8375044325  
Fax    
Email  dr.prabhatkc@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Shalini D 
Designation  Junior Resident 
Affiliation  Centre for Dental Education and Research 
Address  4th floor Division of Orthodontics and Dentofacial Deformities CDER, AIIMS, Block D2, Ansari Nagar East, New Delhi

New Delhi
DELHI
110029
India 
Phone  8760434135  
Fax    
Email  shalinid2804@gmail.com  
 
Source of Monetary or Material Support  
Division of Orthodontics and Dentofacial Deformities, 4th floor, Centre for Dental Education and Research, AIIMS, New Delhi-110029 
 
Primary Sponsor  
Name  Shalini D 
Address  4th floor, Division of Orthodontics and Dentofacial Deformities, CDER, AIIMS Block D2, Ansari Nagar East New Delhi.  
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 
SHALINI D  Centre for Dental Education and Research  4th floor - Division of Orthodontics and Dentofacial Deformities Block D2 Ansari Nagar East New Delhi - 110029
New Delhi
DELHI 
8760434135

shalinid2804@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
INSTITUTE ETHICS COMMITTEE FOR POST GRADUATE RESEARCH AIIMS  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: 8||Other Procedures,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Friction mechanics  En-masse retraction will be done by NiTi closed coil spring which delivers 150 gm of force per side. 
Comparator Agent  Frictionless mechanics   En-masse retraction will be done by T-loops fabricated using 0.019 × 0.025-inch titanium-molybdenum alloy (TMA) wire, which deliver 200 gram of force per side 
 
Inclusion Criteria  
Age From  14.00 Year(s)
Age To  25.00 Year(s)
Gender  Both 
Details  1. Angle Class I malocclusion with bimaxillary dentoalveolar
protrusion requiring four first premolars extraction and maximum
anchorage.2. Patients with a full set of permanent dentitions (except
third molars) and adequate oral hygiene.3. Patients with minimal
crowding 
 
ExclusionCriteria 
Details  1.Patients with systemic diseases, craniofacial syndromes and
conditions that interfere with tooth movement.
2. Previous orthodontic treatment.
3. Severe crowding.
4. Extracted or missing permanent teeth (except for third molars)
5. Grossly decayed tooth (except for first premolars)  
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Outcome Assessor Blinded 
Primary Outcome  
Outcome  TimePoints 
Individual tooth movement of six anterior teeth
in the maxillary arch and mandibular arch using
CBCT.
 
Before and after En-masse retraction of anterior
teeth 
 
Secondary Outcome  
Outcome  TimePoints 
Root resorption of six anterior teeth in the
maxillary and mandibular arch.  
Before and after En-masse retraction of anterior
teeth 
Duration of en-masse retraction of anterior teeth
in the maxillary and mandibular arch 
Before and after En-masse retraction of anterior
teeth. 
Patient-reported outcomes, including pain
assessment and patient satisfaction towards
treatment procedure 
Before and after En-masse retraction of anterior
teeth. 
 
Target Sample Size   Total Sample Size="26"
Sample Size from India="26" 
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)   10/03/2025 
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="6"
Days="0" 
Recruitment Status of Trial (Global)   Not Yet Recruiting 
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 bimaxillary protrusion is a dentofacial condition in which the upper and lower incisors are proclined and protruded with increased lip procumbence. The extraction of first premolars and the retraction of anterior teeth into the extraction space are commonly employed treatments for bimaxillary protrusion cases. There are two different mechanics for the retraction of anterior teeth into extraction spaces: friction and frictionless mechanics. The purpose of this study is to evaluate the treatment effects of friction and frictionless mechanics during en masse retraction which includes evaluating three-dimensional tooth movement and root resorption in CBCT, duration of en masse retraction, and patient-related outcomes during orthodontic treatment 
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