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CTRI Number  CTRI/2024/03/063696 [Registered on: 06/03/2024] Trial Registered Prospectively
Last Modified On: 05/03/2024
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Dentistry 
Study Design  Randomized, Parallel Group Trial 
Public Title of Study   Comparing gums health after giving esthetic crowns (Zirconia Crown and Bioflx Crown) in children. 
Scientific Title of Study   Comparative Evaluation of Gingival Health with Preformed Zirconia Crown and Bioflx Crown in Primary Molars: A non-inferiority 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 Monica 
Designation  Junior Resident 
Affiliation  Centre for Dental Education and Research AIIMS New Delhi 
Address  Department of Pediatric and Preventive Dentistry Centre for Dental Education and Research All India Institute of Medical Sciences New Delhi

New Delhi
DELHI
110029
India 
Phone  9599869321  
Fax    
Email  monica250295@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Vijay Prakash Mathur 
Designation  Professor and Head 
Affiliation  Centre for Dental Education and Research AIIMS New Delhi 
Address  Department of Pediatric and Preventive Dentistry Centre for Dental Education and Research All India Institute of Medical Sciences New Delhi

New Delhi
DELHI
110029
India 
Phone  9811955553  
Fax    
Email  vijaymathur7@yahoo.com  
 
Details of Contact Person
Public Query
 
Name  Dr Monica 
Designation  Junior Resident 
Affiliation  Centre for Dental Education and Research AIIMS New Delhi 
Address  Department of Pediatric and Preventive Dentistry Centre for Dental Education and Research All India Institute of Medical Sciences New Delhi

New Delhi
DELHI
110029
India 
Phone  9599869321  
Fax    
Email  monica250295@gmail.com  
 
Source of Monetary or Material Support  
Department of Pediatric and Preventive Dentistry Centre for Dental Education and Research All India Institute of Medical Sciences New Delhi  
 
Primary Sponsor  
Name  Dr Monica self 
Address  Department of Pediatric and Preventive Dentistry Centre for Dental Education and Research All India Institute of Medical Sciences 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 
Dr Monica  CDER AIIMS New Delhi  Room no. 612 6th floor Centre for Dental Education and Research All India Institute of Medical Sciences New Delhi
New Delhi
DELHI 
9599869321

monica250295@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institute Ethics Committee  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  Preformed Bioflx crowns  It is an aesthetic preformed crowns, made up of hybrid resin polymer. It can be trimmed if necessary but cannot be manipulated by crimping. While maintain cuspal inclines, occlusal surface reduction of 1-1.5 mm using a flame shaped diamond bur will be done. Interproximal reduction will be done using a tapered fissure bur. Proximally the tooth should slightly converge towards the occlusal surface. For buccal or lingual reduction – Little or no reduction will be done. Reduction of a prominent buccal ridge in some teeth might be necessary. Rounding off all the line angles will be done. For Crown adjustment – Trimming of the crown in case required using crown and bridge scissors. Slight flattening of proximal surface can be done using howes plier and slight contouring can be done using contouring pliers. For trial fitting – Place the posterior crown from lingual to buccal, then pushing over the buccal bulge. Check margins for close cervical adaptation extending approximately 0.5 mm subgingivally. Lastly occlusion will be checked. Crown will be luted with type I glass ionomer cement and using finger pressure cementation will be done. 
Comparator Agent  Preformed Zirconia crowns  It is an esthetic preformed crown. It cannot be crimped and contoured. Occlusal surface reduction of 1.5-2 mm using a flame-shaped diamond bur will be done by following the normal anatomic contour. Interproximal reduction will be done using a tapered fissure bur. For Supragingival reduction – Chamfer margin will be created all around the tooth by a reduction of 0.5-1mm. For Subgingival reduction – Extending chamfer margin to 2mm subgingivally without ledge formation. Then rounding off all the line angles and passive fit of the crown and occlusion will be checked. Crown will be luted with type I glass ionomer cement and cementation using finger pressure will be done. 
 
Inclusion Criteria  
Age From  4.00 Year(s)
Age To  8.00 Year(s)
Gender  Both 
Details  1. Primary molars indicated for full coverage restoration from Systemically apparently healthy patients in the age range of 4-8 years of either gender.
2. Primary teeth having at least two-thirds of root radiographically.
3. Primary teeth having at least one-third of crown structure.
 
 
ExclusionCriteria 
Details  1. Root resorption due to any pathological reasons
2. Absence of any oral parafunctional habits in children
 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Participant and Investigator Blinded 
Primary Outcome  
Outcome  TimePoints 
To evaluate and compare the gingival health of primary molar teeth restored with preformed Zirconia crowns and preformed Bioflx crowns   At 6 and 12 months 
 
Secondary Outcome  
Outcome  TimePoints 
1. To evaluate & compare the restoration failure.
2. To evaluate & compare the color change in the crown with time
3. To evaluate & compare the cavosurface marginal discoloration.
4. To evaluate & compare the opposing tooth wear.
5. To evaluate & compare the parental satisfaction of Preformed Zirconia crowns & Preformed Bioflx crowns. 
At 6 & 12 months 
 
Target Sample Size   Total Sample Size="108"
Sample Size from India="108" 
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)   14/03/2024 
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="10"
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  
Bioflx crowns have been introduced as an aesthetic alternative to the existing preformed Zirconia crowns. However, there is a scarcity of clinical data pertaining to its use. Thus, this non-inferiority randomized clinical trial is planned to evaluate and compare the clinical performance of Preformed Zirconia crowns and Preformed Bioflx crowns in terms of gingival health, restoration failure, color change in the crown with time, cavosurface marginal discoloration, opposing tooth wear, and the parental satisfaction.
 
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