Clinical Implant Dentistry and Related Research

Volume 18, Issue 1 pp. 73-81

ARTICLE

Effect of Platform Shift/Switch on Crestal Bone Levels and Mucosal Profile Following Flapless Surgery and Crestal/Subcrestal Implant Placement

Jaebum Lee DDS, MSD, PhD,

Jaebum Lee DDS, MSD, PhD

Laboratory for Applied Periodontal and Craniofacial Regeneration, Georgia Regents University, Augusta, GA, USA

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Tiago Fiorini DDS, MSD, PhD,

Tiago Fiorini DDS, MSD, PhD

Section of Periodontology, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil

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Inãki Gamborena DMD, MSD, FID,

Inãki Gamborena DMD, MSD, FID

Laboratory for Applied Periodontal and Craniofacial Regeneration, Georgia Regents University, Augusta, GA, USA

Clinica Dental Gamborena, San Sebastian, Spain

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Brent A. Wenzel DDS, MS,

Brent A. Wenzel DDS, MS

Laboratory for Applied Periodontal and Craniofacial Regeneration, Georgia Regents University, Augusta, GA, USA

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Peter Schüpbach Dr sc nat ETH,

Peter Schüpbach Dr sc nat ETH

Laboratory for Applied Periodontal and Craniofacial Regeneration, Georgia Regents University, Augusta, GA, USA

Peter Schüpbach GmbH, Horgen, Switzerland

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Ulf M.E. Wikesjö DDS, DMD, PhD,

Ulf M.E. Wikesjö DDS, DMD, PhD

Laboratory for Applied Periodontal and Craniofacial Regeneration, Georgia Regents University, Augusta, GA, USA

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Cristiano Susin DDS, MSD, PhD,

Corresponding Author

Cristiano Susin DDS, MSD, PhD

Laboratory for Applied Periodontal and Craniofacial Regeneration, Georgia Regents University, Augusta, GA, USA

Corresponding Author: Dr. Cristiano Susin, Laboratory for Applied Periodontal and Craniofacial Regeneration (LAPCR), Georgia Regents University College of Dental Medicine, 1120 Fifteenth Street, # GC 4267, Augusta, GA 30912, USA; e-mail: [email protected]Search for more papers by this author

Jaebum Lee DDS, MSD, PhD,

Jaebum Lee DDS, MSD, PhD

Laboratory for Applied Periodontal and Craniofacial Regeneration, Georgia Regents University, Augusta, GA, USA

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Tiago Fiorini DDS, MSD, PhD,

Tiago Fiorini DDS, MSD, PhD

Section of Periodontology, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil

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Inãki Gamborena DMD, MSD, FID,

Inãki Gamborena DMD, MSD, FID

Laboratory for Applied Periodontal and Craniofacial Regeneration, Georgia Regents University, Augusta, GA, USA

Clinica Dental Gamborena, San Sebastian, Spain

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Brent A. Wenzel DDS, MS,

Brent A. Wenzel DDS, MS

Laboratory for Applied Periodontal and Craniofacial Regeneration, Georgia Regents University, Augusta, GA, USA

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Peter Schüpbach Dr sc nat ETH,

Peter Schüpbach Dr sc nat ETH

Laboratory for Applied Periodontal and Craniofacial Regeneration, Georgia Regents University, Augusta, GA, USA

Peter Schüpbach GmbH, Horgen, Switzerland

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Ulf M.E. Wikesjö DDS, DMD, PhD,

Ulf M.E. Wikesjö DDS, DMD, PhD

Laboratory for Applied Periodontal and Craniofacial Regeneration, Georgia Regents University, Augusta, GA, USA

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Cristiano Susin DDS, MSD, PhD,

Corresponding Author

Cristiano Susin DDS, MSD, PhD

Laboratory for Applied Periodontal and Craniofacial Regeneration, Georgia Regents University, Augusta, GA, USA

First published: 29 May 2014

https://doi.org/10.1111/cid.12243

Citations: 6

Conflict of interest and sources of funding: This study was supported by a grant from Nobel Biocare AG, Zürich, Switzerland. Drs. Inãki Gamborena, Peter Schüpbach, Cristiano Susin, Jaebum Lee, and Ulf M.E. Wikesjö serve from time to time as consultants to Nobel Biocare AG. This study was funded by a grant from Nobel Biocare to Dr. Wikesjö.

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Abstract

Background

Crestal remodeling/bone loss appears a common sequel to dental implant placement. Several hypotheses and clinical strategies have been advanced to explain and avert crestal remodeling; however, causative mechanisms remain unclear and the efficacy of clinical protocol uncertain.

Objective

The objective of the present study was to provide a histologic record of crestal versus subcrestal implant placement on crestal remodeling and mucosal profile comparing platform shift/switch and standard abutments following flapless implant surgery using a dog model.

Methods

Four dental implants each were placed into the left and right edentulated posterior mandibles in five adult male hound-Labrador mongrel dogs using a flapless approach including crestal versus subcrestal placement and using platform shift versus standard abutments. Block biopsies were collected for histological/histometric analysis following an 8-week healing interval.

Results

Both crestal and subcrestal implant installation resulted in significant crestal remodeling and bone loss, in particular at buccal sites, without significant differences between platform shift/switch and standard abutments. Implants installed subcrestally exhibited a significantly taller mucosal profile over crestal-level implants without significant differences between platform shift/switch and standard abutments; the epithelial attachment at all times arrested on the abutment surface.

Conclusions

Comparing platform shift/switch versus standard abutments using a minimally invasive flapless approach including crestal or subcrestal implant placement, the platform shift/switch abutments offer no selective advantage over standard abutments.

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Citing Literature

Volume18, Issue1

February 2016

Pages 73-81

Effect of Platform Shift/Switch on Crestal Bone Levels and Mucosal Profile Following Flapless Surgery and Crestal/Subcrestal Implant Placement

Abstract

Background

Objective

Methods

Results

Conclusions

References

Citing Literature

References

Information

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