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CTRI Number  CTRI/2024/01/061399 [Registered on: 12/01/2024] Trial Registered Prospectively
Last Modified On: 08/01/2024
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 effect of two crown materials on gum health at various time interval. 
Scientific Title of Study   To evaluate and compare the effect of translucent zirconia and lithium disilicate crown on IL- 6 and TNF- levels in gingival crevicular fluid GCF at various time intervals a split-mouth comparative pilot 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  Talke Sonali Sanjay  
Designation  Junior Resident 
Affiliation  AIIMS DELHI 
Address  2 nd Floor, Department of Prosthodontics, Centre for Dental Education and Research, All India Institute of Medical Sciences, New Delhi-110029 New Delhi DELHI 110029 India

New Delhi
DELHI
110029
India 
Phone  9284208020  
Fax    
Email  sonalitalke66199@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Aditi Nanda 
Designation  Assistant Professor 
Affiliation  AIIMS DELHI 
Address  2 nd Floor, Department of Prosthodontics, Centre for Dental Education and Research, All India Institute of Medical Sciences, New Delhi-110029 New Delhi DELHI 110029 India

New Delhi
DELHI
110029
India 
Phone  9871167927  
Fax    
Email  aditinanda@yahoo.com  
 
Details of Contact Person
Public Query
 
Name  Talke Sonali Sanjay  
Designation  Junior Resident 
Affiliation  AIIMS DELHI 
Address  2 nd Floor, Department of Prosthodontics, Centre for Dental Education and Research, All India Institute of Medical Sciences, New Delhi-110029 New Delhi DELHI 110029 India

New Delhi
DELHI
110029
India 
Phone  9284208020  
Fax    
Email  sonalitalke66199@gmail.com  
 
Source of Monetary or Material Support  
Talke Sonali Sanjay, Junior Resident, Department of Prosthodontics, Centre for Dental Education and Research, AIIMS  
 
Primary Sponsor  
Name  Talke Sonali Sanjay 
Address  2 nd Floor, Department of Prosthodontics, Centre for Dental Education and Research, All India Institute of Medical Sciences, Sri Aurobindo Garg, Ansari Nagar East, Ansari Nagar, New Delhi-110029 
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 Sonali Talke  Centre for Dental Education and Research ,AIIMS  2 nd Floor, Department of Prosthodontics.
New Delhi
DELHI 
9284208020

sonalitalke66199@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institute Ethics Committee, AIIMS  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: K051||Chronic gingivitis,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  lithium disilicate crown   evaluate the level of IL-6 and TNF- α in gingival crevicular fluid (GCF) before tooth preparation (baseline) and after the cementation of full coverage lithium disilicate crown on mandibular 1st molar at 1 week ,12 weeks, and 24 weeks, time intervals. 
Intervention  translucent zirconia crown   evaluate the level of IL-6 and TNF-α in gingival crevicular fluid (GCF) before tooth preparation (baseline) and after the cementation of full coverage translucent zirconia crown on mandibular 1st molar at 1 week ,12 weeks, and 24, weeks’ time intervals 
 
Inclusion Criteria  
Age From  24.00 Year(s)
Age To  50.00 Year(s)
Gender  Both 
Details  1.Patients requiring bilateral posterior mandibular first molar complete crowns.
2.Teeth selected for crown preparation should be restorable with a minimum crown to root
ratio of at least 1:1.
3. Restored tooth should be healthy and free from plaque and any inflammation.
4. Good oral hygiene and periodontal status with overall gingival indices criteria should be of
15% or less. (22)
12
5. Full complement of teeth (excluding 3rd molars).
6. Patients who will be available for the required follow up period.
7. Patients giving positive informed consent 
 
ExclusionCriteria 
Details  1. Pregnant and breastfeeding women.
2. Systemic disease (e.g., Diabetes mellitus, hypertension, cancer, sjogren’s syndrome,
mental retardation etc).
3. Patient on medication like drug related gingival hyperplasia (e.g., Phenytoin, sodium
valproate, and cyclosporine), antibiotics, steroids and non-steroidal anti-inflammatory
drugs within 3 months.
4. Habitual tobacco smokers.
5. Untreated gingivitis and periodontal disease.
6. A poor oral hygiene patient will be excluded from this study.
 
 
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 
To evaluate & compare the effect of translucent zirconia & lithium disilicate crown on IL-6 & TNF-α levels in gingival
crevicular fluid (GCF) on
mandibular first molar on both sides. 
before tooth
preparation (baseline) & 1 week after the
cementation of full-coverage translucent
zirconia & lithium disilicate crown on
mandibular first molar. 
 
Secondary Outcome  
Outcome  TimePoints 
To evaluate & compare the effect of translucent zirconia & lithium disilicate crown on IL-6 & TNF-α levels in gingival
crevicular fluid (GCF) on
mandibular first molar on both sides. 
12 weeks & 24 weeks after the
cementation of full-coverage translucent
zirconia & lithium disilicate crown on
mandibular first molar  
 
Target Sample Size   Total Sample Size="12"
Sample Size from India="12" 
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 2 
Date of First Enrollment (India)   22/01/2024 
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 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   Different crown materials have been known to affect the health of the periodontium.  Dental restorations are in close contact with the oral tissues, and although systemic side effects are rarely observed, yet local inflammatory reaction or hypersensitivity may be observed sometimes.  Gingival crevicular fluid (GCF) is a physiologic transudate present in a healthy gingival crevice in a small amount that increases during periodontal inflammation and becomes an inflammatory exudate.  It is a promising diagnostic and prognostic fluid with many advantages such as site-specific, non-invasiveness and contains a wide variety of microbial and host mediators like pro-inflammatory cytokines such as IL-1 b, IL-6, IL-8, TNF-α etc. Periodontal inflammation is characterized by well-orchestrated process of host defence through leukocyte recruitment and monocyte activation. These cells have been known to release pro-inflammatory mediators and cytokines (IL-1, IL-6, and Tumour necrosis factor alpha (TNF-α) in gingival crevicular fluid (GCF), that contribute to the inflammation.  TNF-α is responsible for activation of cytokines and initiates the process of inflammation. Macrophages and T-cells secrete TNF-α, which play an important role in early induction of periodontal inflammation.  Similarly, Interleukin-6 (IL-6) also activates localized immune cells and causes gingivitis and periodontal tissues destruction. Furthermore, TNF-α may synergistically stimulate human gingival fibroblasts to enhance IL6 secretion. Elevation of both IL-6 and TNF-α causes periodontal and gingival breakdown via disturbances in lipid metabolism of cells. Increased IL-6 levels are reported in periodontitis and a significant decrease in its level following periodontal therapy indicates its role as an early disease onset biomarker for periodontal inflammation has been established. Therefore, increased IL-6 and TNF-α in seen with early inflammatory conditions like marginal gingivitis and their levels further increases in periodontal breakdown. Translucent zirconia and lithium disilicate are indirect restorative materials that are commonly used because of their high aesthetic properties, mechanical properties, flexural strength, durability and biocompatibility.Therefore, this study has been designed to evaluate and compare the effect of translucent zirconia and lithium disilicate crown on gingival biomarkers (IL-6 and TNF- α) levels in gingival crevicular fluid (GCF) at various time intervals. 
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