Radiographic Evaluation of Crestal Bone Loss Around Implants in Mandibular All on 4 Implant Hybrid Prosthesis Using 2 Different Abutments (Multi-unit Versus OT Bridge)
Gomaa, A., Dehis, W., Mohamad, O., Ali, E., Khalil, D. (2024). Radiographic Evaluation of Crestal Bone Loss Around Implants in Mandibular All on 4 Implant Hybrid Prosthesis Using 2 Different Abutments (Multi-unit Versus OT Bridge). EKB Journal Management System, 70(4), 3549-3559. doi: 10.21608/edj.2024.304575.3118
Amr Salah el din Gomaa; Wessam M. Dehis; Omayma Ahmad Mohamad; Elsayed H. Ali; Diana Khalil Khalil. "Radiographic Evaluation of Crestal Bone Loss Around Implants in Mandibular All on 4 Implant Hybrid Prosthesis Using 2 Different Abutments (Multi-unit Versus OT Bridge)". EKB Journal Management System, 70, 4, 2024, 3549-3559. doi: 10.21608/edj.2024.304575.3118
Gomaa, A., Dehis, W., Mohamad, O., Ali, E., Khalil, D. (2024). 'Radiographic Evaluation of Crestal Bone Loss Around Implants in Mandibular All on 4 Implant Hybrid Prosthesis Using 2 Different Abutments (Multi-unit Versus OT Bridge)', EKB Journal Management System, 70(4), pp. 3549-3559. doi: 10.21608/edj.2024.304575.3118
Gomaa, A., Dehis, W., Mohamad, O., Ali, E., Khalil, D. Radiographic Evaluation of Crestal Bone Loss Around Implants in Mandibular All on 4 Implant Hybrid Prosthesis Using 2 Different Abutments (Multi-unit Versus OT Bridge). EKB Journal Management System, 2024; 70(4): 3549-3559. doi: 10.21608/edj.2024.304575.3118

Radiographic Evaluation of Crestal Bone Loss Around Implants in Mandibular All on 4 Implant Hybrid Prosthesis Using 2 Different Abutments (Multi-unit Versus OT Bridge)

Egyptian Dental Journal
Volume 70, Issue 4, October 2024, Page 3549-3559  XML PDF (1.82 MB)
Document Type: Original Article
DOI: 10.21608/edj.2024.304575.3118
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Authors
Amr Salah el din Gomaaorcid 1; Wessam M. Dehisorcid 2; Omayma Ahmad Mohamadorcid 3; Elsayed H. Aliorcid 4; Diana Khalil Khalil email orcid 3
1Associate Professor, Department of Prosthodontics, Faculty of Dentistry, Fayoum University, Fayoum, Egypt
2Associate Professor, Fixed and Removable Prosthodontics Department, Oral and Dental Research Institute, National Research Centre, Cairo, Egypt
3Lecturer, Department of Prosthodontics, Faculty of Dentistry, Fayoum University, Fayoum, Egypt
4Associate Professor, Engineering Department, Nuclear Research Centre, Egyptian Atomic Energy Authority, Egypt
Abstract
Aim of the study: The aim of this study was to evaluate bone loss around four immediately loaded implants using two different abutments OT bridge and mutli-unit abutments to support mandibular fixed-detachable prosthesis.
Materials and Methods: Four inter-foraminal mandibular implants, two axial anteriorly and two 30 degree tilted posteriorly, placed in 16 completely edentulous patients to immediately support fixed-detachable prosthesis opposing maxillary complete denture. Group I received OT bridge while group II received multi-unit abutments. Bone loss was evaluated immediately after loading, at 3, 6, and 12 months using CBCT for measurements.
Results: both groups demonstrated peri-implant crestal bone loss within the acceptable range but group I (OT Bridge) showed less bone resorption with significant statistical difference, no significant difference was observed between axial and 30-degree tilted implants. Bone loss was noticed higher from baseline and 3 months, then decreased in all other intervals.
Conclusion: OT Bridge showed great success, less peri-implant crestal bone resorption, Seeger rings gave extra means of retention. Within the limitations of this study, fixed- detachable mandibular all on 4 prosthesis using OT Bridge abutments is highly recommended.
Keywords
All on 4; fixed-detachable prosthesis; OT bridge; Multi-unit abutments; Immediate loading
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