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Clinical and radiographic comparison between platform-shifted and nonplatform-shifted implant: a one-year prospective study

Maarten Glibert (UGent) , Stijn Vervaeke (UGent) , Hugo De Bruyn (UGent) and Pär-Olov Östman (UGent)
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Abstract
Background: Developments in implant hardware and biologic understanding improved treatment predictability in terms of implant survival. Current research focuses on accelerated loading protocols and crestal bone preservation. Purpose: This prospective, monocenter study analyzed the clinical and radiographic outcome of a novel parallel-walled implant, with and without platform shift. Materials and Methods: Forty-eight consecutively treated patients (30 women, 18 men) with crowns/bridges supported by 115 implants were included. Eighty-three percent of implants were nonocclusal, immediately loaded, and 17% were subjected to one-stage surgery and delayed loading after 10 weeks; 39.1% were of diameter 5.0 mm, enabling platform shifting with a 4.0 mm-wide prosthetic component; 60.9% were of diameter 4.0 mm with a 4.0 mm component. Radiographic crestal bone levels were assessed at baseline and 1 year. A multivariate statistical analysis was performed to determine factors affecting crestal bone loss after 1 year. Results: All implants survived and mean marginal bone loss was 0.73 mm (SD: 0.13; range: −0.60 to 5.0 mm). There was a statistically significant difference between platform-shifted (0.63 mm; SD: 0.18) and nonplatform-shifted (1.02 mm; SD: 0.14) implants. Implants in abundant bone volume lost significant less crestal bone (0.45 mm; SD: 0.14) compared with implants in small volume (1.20 mm; SD: 0.21). Implant diameter, loading time, anatomical position, smoking, and bone quality did not affect crestal bone loss. Conclusion: After 1 year of loading, both implant-prosthetic features yield a high survival and limited crestal bone loss. Crestal bone loss is minimized using platform-shifted implants placed in sufficiently voluminous bone. To limit the crestal bone loss, an adopted implant diameter with platform shifting should be considered.
Keywords
dental implants, bone volume, immediate loading, implant design, osseotite 2, platform shifting, IMMEDIATELY LOADED IMPLANTS, DENTAL IMPLANTS, CRESTAL BONE, PERI-IMPLANTITIS, MARGINAL BONE, SURFACE, SURVIVAL, RESTORATIONS, STABILITY, PRESERVATION

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Chicago
Glibert, Maarten, Stijn Vervaeke, Hugo De Bruyn, and Pär-Olov Östman. 2016. “Clinical and Radiographic Comparison Between Platform-shifted and Nonplatform-shifted Implant: a One-year Prospective Study.” Clinical Implant Dentistry and Related Research 18 (1): 129–137.
APA
Glibert, M., Vervaeke, S., De Bruyn, H., & Östman, P.-O. (2016). Clinical and radiographic comparison between platform-shifted and nonplatform-shifted implant: a one-year prospective study. CLINICAL IMPLANT DENTISTRY AND RELATED RESEARCH, 18(1), 129–137.
Vancouver
1.
Glibert M, Vervaeke S, De Bruyn H, Östman P-O. Clinical and radiographic comparison between platform-shifted and nonplatform-shifted implant: a one-year prospective study. CLINICAL IMPLANT DENTISTRY AND RELATED RESEARCH. 2016;18(1):129–37.
MLA
Glibert, Maarten, Stijn Vervaeke, Hugo De Bruyn, et al. “Clinical and Radiographic Comparison Between Platform-shifted and Nonplatform-shifted Implant: a One-year Prospective Study.” CLINICAL IMPLANT DENTISTRY AND RELATED RESEARCH 18.1 (2016): 129–137. Print.
@article{5698335,
  abstract     = {Background: Developments in implant hardware and biologic understanding improved treatment predictability in terms of implant survival. Current research focuses on accelerated loading protocols and crestal bone preservation.
Purpose: This prospective, monocenter study analyzed the clinical and radiographic outcome of a novel parallel-walled implant, with and without platform shift.
Materials and Methods: Forty-eight consecutively treated patients (30 women, 18 men) with crowns/bridges supported by 115 implants were included. Eighty-three percent of implants were nonocclusal, immediately loaded, and 17\% were subjected to one-stage surgery and delayed loading after 10 weeks; 39.1\% were of diameter 5.0 mm, enabling platform shifting with a 4.0 mm-wide prosthetic component; 60.9\% were of diameter 4.0 mm with a 4.0 mm component. Radiographic crestal bone levels were assessed at baseline and 1 year. A multivariate statistical analysis was performed to determine factors affecting crestal bone loss after 1 year.
Results: All implants survived and mean marginal bone loss was 0.73 mm (SD: 0.13; range: \ensuremath{-}0.60 to 5.0 mm). There was a statistically significant difference between platform-shifted (0.63 mm; SD: 0.18) and nonplatform-shifted (1.02 mm; SD: 0.14) implants. Implants in abundant bone volume lost significant less crestal bone (0.45 mm; SD: 0.14) compared with implants in small volume (1.20 mm; SD: 0.21). Implant diameter, loading time, anatomical position, smoking, and bone quality did not affect crestal bone loss.
Conclusion: After 1 year of loading, both implant-prosthetic features yield a high survival and limited crestal bone loss. Crestal bone loss is minimized using platform-shifted implants placed in sufficiently voluminous bone. To limit the crestal bone loss, an adopted implant diameter with platform shifting should be considered.},
  author       = {Glibert, Maarten and Vervaeke, Stijn and De Bruyn, Hugo and {\"O}stman, P{\"a}r-Olov},
  issn         = {1523-0899},
  journal      = {CLINICAL IMPLANT DENTISTRY AND RELATED RESEARCH},
  language     = {eng},
  number       = {1},
  pages        = {129--137},
  title        = {Clinical and radiographic comparison between platform-shifted and nonplatform-shifted implant: a one-year prospective study},
  url          = {http://dx.doi.org/10.1111/cid.12269},
  volume       = {18},
  year         = {2016},
}

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