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CTRI Number  CTRI/2022/03/041078 [Registered on: 14/03/2022] Trial Registered Prospectively
Last Modified On: 12/03/2022
Post Graduate Thesis  No 
Type of Trial  Interventional 
Type of Study   Dentistry 
Study Design  Randomized, Parallel Group, Active Controlled Trial 
Public Title of Study   Which type of implant placement provides better clinical outcome in patients?  
Scientific Title of Study   Clinical performance, patient and operator reported outcome measures of axially placed and tilted implants used for fixed rehabilitation of the edentulous maxilla: A pilot study. 
Trial Acronym   
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Mohit Kheur  
Designation  Professor, Head of Implantology. 
Affiliation  M.A.Rangoonwala College of Dental Sciences and Research Center, Pune 
Address  Department of Prosthodontics & Implantology, Room no. 301, M.A.Rangoonwala College of Dental Sciences and research Centre, Hidayatullah road, Azam Campus, Camp, Pune 411001
Department of Prosthodontics & Implantology, Room no. 301, M.A.Rangoonwala College of Dental Sciences and research Centre, Hidayatullah road, Azam Campus, Camp, Pune 411001
Pune
MAHARASHTRA
411001
India 
Phone  989350037  
Fax    
Email  mkheur@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Tabrez lakha 
Designation  Senior Lecturer, Department of Prosthodontics 
Affiliation  M.A.Rangoonwala College of Dental Sciences and Research Center, Pune 
Address  Department of Prosthodontics & Implantology, Room no. 301, M.A.Rangoonwala College of Dental Sciences and research Centre, Hidayatullah road, Azam Campus, Camp, Pune 411001
Department of Prosthodontics & Implantology, Room no. 301, M.A.Rangoonwala College of Dental Sciences and research Centre, Hidayatullah road, Azam Campus, Camp, Pune 411001
Pune
MAHARASHTRA
400102
India 
Phone  09766675324  
Fax    
Email  tabrezlakha@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Farha Rizwan 
Designation  Study Manager  
Affiliation  M.A.Rangoonwala College of Dental Sciences and Research Center, Pune 
Address  Department of Prosthodontics & Implantology, Room no. 301, M.A.Rangoonwala College of Dental Sciences and research Centre, Hidayatullah road, Azam Campus, Camp, Pune 411001
Department of Prosthodontics & Implantology, Room no. 301, M.A.Rangoonwala College of Dental Sciences and research Centre, Hidayatullah road, Azam Campus, Camp, Pune 411001
Pune
MAHARASHTRA
411001
India 
Phone  989350037  
Fax    
Email  dr.farha.mardc@gmail.com  
 
Source of Monetary or Material Support  
International Team For Implantology 
 
Primary Sponsor  
Name  International Team For Implantology 
Address  Peter Merian-Weg 10, 4052 Basel Switzerland 
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 
Mohit kheur  M.A. Rangoonwala College of Dental Sciences and Research Centre  Department of Prosthodontics & Implantology, Room no. 301, M.A.Rangoonwala College of Dental Sciences and research Centre, Hidayatullah road, Azam Campus, Camp, Pune 411001
Pune
MAHARASHTRA 
989350037

mkheur@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Ethics Committee of M.A.Rangoonwala Dental College   Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Healthy Human Volunteers  Absence of teeth in the upper jaw (maxilla) 
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  CAD-CAM fabricated provisional prosthesis   Duration: 3 months. CAD-CAM fabricated provisional prostheses facilitates prosthesis delivery in immediate functional loading protocols. The prostheses are manufactured in the laboratory by milling high-density polymers based on a highly cross-linked polymethylmethacrylate (PMMA). The prostheses are known to have higher biocompatibility, superior esthetics and soft tissue response as compared to denture conversion prostheses.  
Comparator Agent  Denture Conversion Prosthesis  Duration: 3 months. The denture conversion prosthesis is routinely used for immediate loading of complete-arch fixed implant-supported prosthesis due to its simplicity, adaptability to changes in planned implant positions, and reduced treatment cost. Nevertheless, this is a multistep, technique-sensitive process. Therefore, in this study a comparison between CAD-CAM fabricated prostheses and a denture conversion prostheses will be performed. 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  80.00 Year(s)
Gender  Both 
Details  Patients should be of minimum 18 years to be included in the study.
- Patient with edentulous maxilla
- Presence of natural teeth or dentures in the mandibular arch
- Presence of adequate primary stability during implant placement.
- Adequate bone volume to place at least 4 implants with a standard diameter & at least 6 mm in length.
- Presence of at least 6mm (height) of bone in the distal most prosthetic position (in the region of 2nd premolar or 1st molar).
- Presence of at least 8 mm (height) and 6 mm (width) of bone in the anterior region to place an implant of a regular diameter with a minimum length of 8 mm.
- Presence of healed maxillary edentulous ridge (at least 3 months post extraction).

 
 
ExclusionCriteria 
Details  Self reported history of bruxism
- Uncontrolled diabetes (HbA1c>7.5 mg/dl)
- History of irradiation in the head and neck region
- Inability to comply with annual implant maintenance follow up
- Ridge profile not allowing the placement of a fixed prostheses.
- Presence of systemic disease that contraindicates implant placement.
- Pregnant or lactating women
 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Participant and Outcome Assessor Blinded 
Primary Outcome  
Outcome  TimePoints 
The primary outcome of the study is the evaluation of prosthetic complications of CAD-CAM fabricated and denture-conversion prosthesis using modified USPHS scores at 3 months of function.  3 months 
 
Secondary Outcome  
Outcome  TimePoints 
Survival rates:
To evaluate implant survival rates of tilted and axially placed implants at 1 year, 3 years and 5 years
.
VAS Scores, OHIP-14 scores and Operator based preferences. 
1 year, 3 years and 5 years 
Prosthetic Level:

Incidence of chipping of the final prostheses, fracture of abutment/ crown or frame work, fracture of veneering ceramic, occlusal roughness, loss of retention (loosening of crown or abutment screw) and the contour of restoration will be evaluated at 4 weeks after insertion of final prosthesis and at 1 year, 3 years and 5 years after function for final prosthesis using the Modified USPS scores.
 
4 weeks, 1 years, 3 years and 5 years 
Implant Level:
Fracture of screw and implant will be evaluated at 4 weeks after insertion of final prosthesis (BL1) and at 1 year, 3 years and 5 years.
 
4 weeks, 1 years, 3 years and 5 years 
PROMS:
- VAS scores based questionnaires about maintenance of oral hygiene, ability to speak, comfort and aesthetics will be evaluated at insertion of interim prosthesis ( Visit 3; prior to implant insertion,) at baseline and 3 months after use of provisional prostheses. Similarly VAS scores will be evaluated at the time of insertion of final prostheses (BL1) and at 1, 3 and 5 years after function.
- OHIP-14 will be evaluated at insertion of interim prosthesis (Visit 3; prior to implant insertion, at baseline and 3 months after use of provisional prostheses. Similarly VAS scores will be evaluated at the time of insertion of final prostheses and at 1, 3 and 5 years after function.
 
1 year, 3 years and 5 years 
Operator based preferences:

VAS scores based questionnaires for operator based preferences with respect to the ease of surgery and insertion of CAD-CAM fabricated provisional prostheses and denture conversion prostheses will be assessed after the insertion of provisional prostheses.
 
3 months 
Clinical outcomes:

The following clinical outcomes will be evaluated at baseline after a functional period 3 months for provisional prostheses; and after insertion of final prosthesis (BL1) and after a functional period of 1, 3 and 5 years by using a dental probe

- Probing depth (PD)
- Bleeding on probing (BOP)
- Plaque control record (PCR)
 
3 months, 1 year, 3 years and 5 years 
Radiographic Outcomes
Crestal bone loss 
3 months, 1 year, 3 years and 5 years  
 
Target Sample Size   Total Sample Size="40"
Sample Size from India="40" 
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)   31/03/2022 
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="5"
Months="0"
Days="0" 
Recruitment Status of Trial (Global)   Not Applicable 
Recruitment Status of Trial (India)  Not Yet Recruiting 
Publication Details   NIL 
Individual Participant Data (IPD) Sharing Statement

Will individual participant data (IPD) be shared publicly (including data dictionaries)?  

Response - NO
Brief Summary   Implant supported restorations are now a predictable treatment modality for the rehabilitation of complete and partially edentulous jaws. The concept of tilted implants is well documented in the dental literature and high implant survival and success rates for rehabilitation of edentulous arches have been reported.Even though the concept of tilted implants is documented in the literature, the majority of the studies performed evaluated the success and survival rates of this technique without a proper control group.Therefore, in this study, besides the comparison between the two different reconstruction workflows , the patients will be randomized to receive axially or tilted implants. Overall, the expected outcome of this study might help clinicians in their decision making-process when rehabilitating cases of atrophic maxilla. 
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