A Retrospective Analysis of Early and Immediately Loaded Osseotite Implants in Cross‐Arch Rehabilitations in Edentulous Maxillas and Mandibles Up to 7 Years |
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| Authors: | Hilde Browaeys MD DDS Joel Defrancq MD DDS Melissa C.A. Dierens DDS MSc Resa Miremadi DDS MSc Stefan Vandeweghe DDS PhD Tommie Van de Velde DDS MSc PhD Hugo De Bruyn DDS MSc PhD |
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| Affiliation: | 1. Maxillofacial surgeon, PhD student, and clinic head, Department of Oral and Maxillofacial Surgery, Dental School, Faculty of Medicine and Health Sciences, University of Ghent, University Hospital Ghent, Ghent, Belgium;2. maxillofacial surgeon, Department of Oral and Maxillofacial Surgery, Eeuwfeestkliniek of Antwerp, Antwerp, Belgium;3. specialist in periodontics and PhD student, Department of Periodontology and Oral Implantology, Dental School, Faculty of Medicine and Health Sciences, University of Ghent, Ghent, Belgium;4. postdoctoral researcher, Department of Periodontology and Oral Implantology, Dental School, Faculty of Medicine and Health Sciences, University of Ghent, Ghent, Belgium;5. prosthodontist, Department of Prosthodontics, School of Dentistry, Malm? University, Malm?, Sweden;6. assistant head of clinic, Department of Periodontology and Oral Implantology, Dental School, Faculty of Medicine and Health Sciences, University of Ghent, Ghent, Belgium;7. specialist in periodontics, Department of Periodontology and Oral Implantology, Dental School, Faculty of Medicine and Health Sciences, University of Ghent, Ghent, Belgium;8. professor and clinic head, and visiting professor, Department of Prosthodontics, School of Dentistry, Malm? University, Malm?, Sweden |
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| Abstract: | Background: Immediate loading of full‐arch restorations yields good results in selected cases, but long‐term follow‐up and the outcome in compromised bone are scarcely evaluated. Purpose: To evaluate immediately loaded Osseotite implants (Biomet 3i, Palm Beach, FL, USA) installed in healed or grafted bone, with regard to implant survival and peri‐implant bone loss up to 7 years in function. Materials and Methods: Information was retrospectively retrieved from 83 patients' records with 749 Osseotite implants supporting immediately loaded semipermanent full‐arch acrylic restorations. Five hundred sixty‐eight (75.8%) implants were placed in healed bone and 181 (24.2%) in augmented bone, regenerated with sinus lifting and/or onlay/inlay grafts with/without biomaterials and membranes. Implant survival and success based on radiological peri‐implant bone loss were registered. Wilcoxon rank sum tests evaluated peri‐implant bone loss in compromised versus healed bone or between jaws or time intervals with p < .05 as statistically significant. Results: Sixteen of 749 implants failed (2.1%), 11/343 in maxilla (3.2%) and 5/406 (1.2%) in mandible. After 7 years, the cumulative failure rate was 9%. Mean peri‐implant bone loss increased to 1.2 mm (SD 1.0) during the first 2 years but remained unchanged thereafter. Around implants in grafted bone, on average, 0.3 mm more bone loss was found. Conclusion: The Osseotite implants offer a predictable long‐term outcome in terms of implant survival and stable peri‐implant bone under immediate loading even in grafted bone. However, the high incidence of technical repair because of fractures of the semipermanent provisionals requires attention because it may be negative from a cost‐benefit perspective. Implants in grafted bone show a tendency to a more pronounced initial bone remodeling without clinical consequence in the long term. |
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| Keywords: | bone remodeling dental implant grafting immediate loading implant survival one‐stage surgery Osseotite surface posterior hip graft prosthetic complications sinus lift |
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