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, Pages 3549-3559 PDF (1.82 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/edj.2024.304575.3118 | ||
| Authors | ||
| Amr Salah el din Gomaa1; Wessam M. Dehis2; Omayma Ahmad Mohamad3; Elsayed H. Ali4; Diana Khalil Khalil* 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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