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CTRI Number  CTRI/2025/03/083483 [Registered on: 26/03/2025] Trial Registered Prospectively
Last Modified On: 26/03/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Medical Device
Dentistry 
Study Design  Other 
Public Title of Study   To evaluate the skeletal, dental and soft tissue changes in skeletal class II patient using Twin block appliance 
Scientific Title of Study   Comparative evaluation of the effects of Twin Block appliance therapy in skeletal Class II malocclusion patients with horizontal and vertical growth patterns: A prospective 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  Vishal Gupta 
Designation  Resident 
Affiliation  Army Dental Centre , Research and Referral 
Address  Dept of Orthodontics and Dentofacial Orthopaedics, Army Dental Centre, Research and Referral, Dhaula Kuan, Delhi Cantt, New Delhi

South
DELHI
110010
India 
Phone  7302421553  
Fax    
Email  vishalgupta1994p@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Brig Sukhbir Singh Chopra 
Designation  HOD 
Affiliation  Army Dental Centre , Research and Referral 
Address  Dept of Orthodontics and Dentofacial Orthopaedics, Army Dental Centre, Research and Referral, Dhaula Kuan, Delhi Cantt, New Delhi

South
DELHI
110010
India 
Phone  9402707591  
Fax    
Email  drsschopra@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Brig Sukhbir Singh Chopra 
Designation  HOD 
Affiliation  Army Dental Centre , Research and Referral 
Address  Dept of Orthodontics and Dentofacial Orthopaedics, Army Dental Centre, Research and Referral, Dhaula Kuan, Delhi Cantt, New Delhi

South
DELHI
110010
India 
Phone  9402707591  
Fax    
Email  drsschopra@gmail.com  
 
Source of Monetary or Material Support  
Army Dental Centre Research and Referral, New Delhi South Delhi 110010 India 
 
Primary Sponsor  
Name  Army Dental Centre Research and Referral 
Address  Army Dental Centre Research and Referral, Dhaula Kuan, Delhi Cantt, New Delhi South Delhi 110010 India 
Type of Sponsor  Research institution 
 
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 Vishal gupta  Army Dental Centre , Research and Referral  Dept of Orthodontics and Dentofacial Orthopaedics, Army Dental Centre, Research and Referral, Dhaula Kuan, Delhi Cantt, New Delhi
New Delhi
DELHI 
07302421553

vishalgupta1994p@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Army Dental Centre , Research and Referral  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Healthy Human Volunteers  Skeletal Class II malocclusion 
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Correction of Class II malocclusion by Twin Block Therapy  Comparative evaluation of the effects of Twin Block appliance therapy in skeletal Class II malocclusion patients with horizontal growth patterns along with IGF-1serum level Lateral cephalograms will be taken at T0- Pretreatment T1- At Pterygoid response T2- Postfunctional treatment 
Comparator Agent  Correction of Class II malocclusion using Twin Block Therapy   Comparative evaluation of the effects of Twin Block appliance therapy in skeletal Class II malocclusion patients with vertical growth patterns along with IGF-1serum level Lateral cephalograms will be taken at T0- Pretreatment T1- At Pterygoid response T2- Postfunctional treatment 
 
Inclusion Criteria  
Age From  12.00 Year(s)
Age To  16.00 Year(s)
Gender  Both 
Details  1. Patient with mandibular deficiency as a cause of skeletal class II with ANB of greater than 4 degree
2. Molar class II relationship bilaterally
3. Overjet greater than 4 mm
4. Positive visual treatment objective
5. Cervical vertebrae maturity index stage 3 to 5
6. minimal crowding of less than 3 mm 
 
ExclusionCriteria 
Details  1. History of previous orthodontic treatment
2. Trauma to jaw bones
3. systemic diseases involving jaw bones
4. Patient with neuromuscular disorder or TMJ pathology
4. Syndromic cases including patients with cleft lip and cleft palate
5. Facial asymmetry of jaws 
 
Method of Generating Random Sequence   Coin toss, Lottery, toss of dice, shuffling cards etc 
Method of Concealment   Alternation 
Blinding/Masking   Participant Blinded 
Primary Outcome  
Outcome  TimePoints 
Skeletal, Dental, Soft tissue changes produced by Twin block appliance in class II malocclusion patients with horizontal and vertical grower  T0- Pretreatment - 0 month
T1- At Pterygoid response - 3 months
T2- Post functional- 6 months 
 
Secondary Outcome  
Outcome  TimePoints 
To assess the change in serum IGF-1 level  T0- Pretreatment- 0 weeks
T1- At pterygoid response- 3 months
T2- Post functional treatment- 6 months 
 
Target Sample Size   Total Sample Size="20"
Sample Size from India="20" 
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)   07/04/2025 
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="9"
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   Functional jaw orthopaedics are important in orthodontics to module mandibular growth deficiency in skeletal class II malocclusion patients. Twin block is most commonly used appliance due to ease of fabrication and patient compliance. This study is to find out skeletal, dental and soft tissue effects in horizontal and vertical grower patients treated with Twin block appliance for skeletal class II malocclusion. And to find out that ,does IGF-1 serum level are elevated or not during growth modulation 
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