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CTRI Number  CTRI/2025/07/092061 [Registered on: 30/07/2025] Trial Registered Prospectively
Last Modified On: 30/07/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Dentistry 
Study Design  Single Arm Study 
Public Title of Study   To compare how much bacteria can leak into two different types of connections between dental implants and their abutments 
Scientific Title of Study   To comparatively evaluate the presence of microbial leakage at two types of implant abutment connections and adjacent sites of implant 
Trial Acronym  NIL 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Sagnik Sardar 
Designation  PG Resident 
Affiliation  Surendera Dental College and Research Centre 
Address  Department of Periodontology and Oral Implantology, room number 4, His Highness Gardens, Sri Ganganagar

Ganganagar
RAJASTHAN
335001
India 
Phone  7000466317  
Fax    
Email  sngsr2024@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  RAJNI AGGARWAL 
Designation  PG Resident 
Affiliation  Surendera Dental College and Research Centre 
Address  Department of Periodontology and Oral Implantology, room number 4, His Highness Gardens, Sri Ganganagar

Ganganagar
RAJASTHAN
335001
India 
Phone  7000466317  
Fax    
Email  rajniperio@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Sagnik Sardar 
Designation  PG Resident 
Affiliation  Surendera Dental College and Research Centre 
Address  Department of Periodontology and Oral Implantology, room number 4, His Highness Gardens, Sri Ganganagar

Ganganagar
RAJASTHAN
335001
India 
Phone  7000466317  
Fax    
Email  sngsr2024@gmail.com  
 
Source of Monetary or Material Support  
SURENDERA DENTAL COLLEGE AND RESEARCH CENTRE, Department of Periodontology and Oral Implantology, room number 4, His Highness Gardens, Sri Ganganagar, Rajasthan 335001 
 
Primary Sponsor  
Name  SURENDERA DENTAL COLLEGE AND RESEARCH CENTRE 
Address  Department of Periodontology and Oral Implantology, room number 4, His Highness Gardens, Sri Ganganagar, Rajasthan, 335001 
Type of Sponsor  Other [Private Dental college ] 
 
Details of Secondary Sponsor  
Name  Address 
Dr Sagnik Sardar  SURENDERA DENTAL COLLEGE AND RESEARCH CENTRE His Highness Gardens Sri Ganganagar Rajasthan 335001 
 
Countries of Recruitment     India  
Sites of Study  
No of Sites = 1  
Name of Principal Investigator  Name of Site  Site Address  Phone/Fax/Email 
Dr Sagnik Sardar  SURENDERA DENTAL COLLEGE AND RESEARCH INSTITUTE  Department of Periodontology and Oral Implantology, room number 4, His Highness Gardens, Sri Ganganagar, Rajasthan, 335001
Ganganagar
RAJASTHAN 
7000466317

sngsr2024@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
INSTITUTIONAL ETHICAL COMMITTEE  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: R00-R99||Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  NIL  NIL 
Intervention  Nil  Nil 
Intervention  Nil  Nil 
Intervention  Nil  Nil 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  80.00 Year(s)
Gender  Both 
Details  Partially edentulous patients who are cooperative and motivated for dental implant treatment
Patients with adequate bone volume
Good generalized periodontal health
Patient is willing to follow the study protocol 
 
ExclusionCriteria 
Details  Patients with any systemic diseases.
Patients having adverse habits tobacco use or smoking, alcohol etc.
Pregnant and lactating patients
Patients having allergy to the materials to be used during operation.
Patients having severe bruxism or clenching.
Patient on Immunosuppressed or immunocompromised drugs. 
 
Method of Generating Random Sequence   Other 
Method of Concealment   Other 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
THERE WILL BE BACTERIAL COLONY GROWTH IN THE IMPLANT ABUTMENT CONNECTION AND THAT MIGHT LEAD TO FAILURE OF IMPLANT CAUSING PERI IMPLANTITIS  9 MONTHS
 
 
Secondary Outcome  
Outcome  TimePoints 
IF THERE WILL BE NO BACTERIAL COLONY GROWTH IN THE IMPLANT ABUTMENT CONNECTION THAT MIGHT LEAD TO NON FAILURE OF IMPLANTS
 
9 MONTHS 
IF THERE IS NO BACTERIAL COLONY GROWTH IN THE IMPLANT ABUTMENT CONNECTION THEN THERE WILL BE NO FAILURE OF IMPLANTS  9 MONTHS 
 
Target Sample Size   Total Sample Size="22"
Sample Size from India="22" 
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)   01/09/2025 
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="6"
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   Dental implants offer a reliable solution for tooth replacement; however, microbial contamination at the implant-abutment interface (IAI) poses a significant risk to their long-term success. A microgap between the implant and abutment in two-part systems can allow the infiltration of fluids and bacteria, including enteric species like Escherichia coli, Klebsiella, and Enterobacter. These bacteria, typically found in the gastrointestinal tract, can colonize peri-implant sites due to poor hygiene or systemic conditions. Their strong biofilm-forming ability and virulence can trigger inflammation, leading to peri-implantitis and bone loss. Recent studies have investigated the characteristics of E. coli in oral infections, examining their virulence, antibiotic resistance, and phylogroups. Additionally, the design and precision of the implant-abutment connection greatly influence microbial leakage, yet comparative data remains limited. Antibiotic therapy, while beneficial, must be used judiciously due to resistance concerns. Maintaining strict oral hygiene remains essential in preventing bacterial colonization. Therefore, this study aims to evaluate bacterial leakage, specifically E. coli, at two different implant systems: once during abutment placement at 3 months and again at 6 months post-implant placement. Adjacent teeth will also be analyzed to better understand bacterial behavior and improve implant design and clinical protocols. 
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