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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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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 is scarcely evaluated. Purpose: To evaluate immediately loaded Osseotite implants installed in healed or grafted bone, with regards to implant survival and peri-implant bone loss up to 7 years in function. Materials and Methods: Information was retrospectively retrieved from 83 patient’s records with 749 osseotite implants (Biomet 3i, Palm Beach, Fl, USA) supporting immediately loaded semi-permanent full-arch acrylic restorations. 568 (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<0.05 as statistically significant. Results: 16/749 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. Discussion and 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. On the other hand, the high incidence of technical repair due to fractures of the semi-permanent 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 remodelling without clinical consequence in the long term.
Keywords
bone remodeling., prosthetic complications, sinuslift, posterior hipgraft, grafting, one-stage surgery, immediate loading, osseotite surface, implant survival, Dental implant, TIOBLAST DENTAL IMPLANTS, PLACEMENT, JAWS

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Chicago
Browaeys, Hilde, Joel Defrancq, Melissa Dierens, Seyed Reza Miremadi, Stefan Vandeweghe, Tommie Van de Velde, and Hugo De Bruyn. 2013. “A Retrospective Analysis of Early and Immediately Loaded Osseotite Implants in Cross-arch Rehabilitations in Edentulous Maxillas and Mandibles up to 7 Years.” Clinical Implant Dentistry and Related Research 15 (3): 380–389.
APA
Browaeys, H., Defrancq, J., Dierens, M., Miremadi, S. R., Vandeweghe, S., Van de Velde, T., & De Bruyn, H. (2013). A retrospective analysis of early and immediately loaded osseotite implants in cross-arch rehabilitations in edentulous maxillas and mandibles up to 7 years. CLINICAL IMPLANT DENTISTRY AND RELATED RESEARCH, 15(3), 380–389.
Vancouver
1.
Browaeys H, Defrancq J, Dierens M, Miremadi SR, Vandeweghe S, Van de Velde T, et al. A retrospective analysis of early and immediately loaded osseotite implants in cross-arch rehabilitations in edentulous maxillas and mandibles up to 7 years. CLINICAL IMPLANT DENTISTRY AND RELATED RESEARCH. 2013;15(3):380–9.
MLA
Browaeys, Hilde, Joel Defrancq, Melissa Dierens, et al. “A Retrospective Analysis of Early and Immediately Loaded Osseotite Implants in Cross-arch Rehabilitations in Edentulous Maxillas and Mandibles up to 7 Years.” CLINICAL IMPLANT DENTISTRY AND RELATED RESEARCH 15.3 (2013): 380–389. Print.
@article{1167182,
  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 is scarcely evaluated.
Purpose: To evaluate immediately loaded Osseotite implants installed in healed or grafted bone, with regards to implant survival and peri-implant bone loss up to 7 years in function.
Materials and Methods: Information was retrospectively retrieved from 83 patient{\textquoteright}s records with 749 osseotite implants (Biomet 3i, Palm Beach, Fl, USA) supporting immediately loaded semi-permanent full-arch acrylic restorations. 568 (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{\textlangle}0.05 as statistically significant.
Results: 16/749 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.
Discussion and 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. On the other hand, the high incidence of technical repair due to fractures of the semi-permanent 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 remodelling without clinical consequence in the long term.},
  author       = {Browaeys, Hilde and Defrancq, Joel and Dierens, Melissa and Miremadi, Seyed Reza and Vandeweghe, Stefan and Van de Velde, Tommie and De Bruyn, Hugo},
  issn         = {1523-0899},
  journal      = {CLINICAL IMPLANT DENTISTRY AND RELATED RESEARCH},
  keyword      = {bone remodeling.,prosthetic complications,sinuslift,posterior hipgraft,grafting,one-stage surgery,immediate loading,osseotite surface,implant survival,Dental implant,TIOBLAST DENTAL IMPLANTS,PLACEMENT,JAWS},
  language     = {eng},
  number       = {3},
  pages        = {380--389},
  title        = {A retrospective analysis of early and immediately loaded osseotite implants in cross-arch rehabilitations in edentulous maxillas and mandibles up to 7 years},
  url          = {http://dx.doi.org/10.1111/j.1708-8208.2011.00367.x},
  volume       = {15},
  year         = {2013},
}

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