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Biomechanical Effects of Diameters of Implant Body and Implant Platform in Bone Strain around an Immediately Loaded Dental Implant with Platform Switching Concept

1,2,†, 3,4,†, 1,* and 3,4,*
1
Department of Dentistry, Chang Gung Memorial Hospital and College of Medicine, Chang Gung University, Kaohsiung 833, Taiwan
2
School of Dentistry, University of California, San Francisco, San Francisco, CA 94143, USA
3
School of Dentistry, China Medical University, Taichung 404, Taiwan
4
Department of Bioinformatics and Medical Engineering, Asia University, Taichung 413, Taiwan
*
Authors to whom correspondence should be addressed.
Equal contributors.
Appl. Sci. 2019, 9(10), 1998; https://doi.org/10.3390/app9101998
Received: 18 January 2019 / Revised: 11 April 2019 / Accepted: 9 May 2019 / Published: 16 May 2019
(This article belongs to the Section Applied Biosciences and Bioengineering)
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PDF [2084 KB, uploaded 16 May 2019]
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Abstract

Dental implants designed with platform switching have been used clinically to reduce crestal bone resorption. The aim of this study was to determine the biomechanical effects of loading types, diameter of platform, and implant diameter in bone strain around immediately loaded implants with platform switching concept. Platform-switching features of dental implants with various diameters of implant body and implant platform (named as RP5.0, RP4.3, and NP3.5) were inserted into artificial bone blocks. The initial implant stability was confirmed using a Periotest device before the loading test. Rosette strain gauges were placed on the alveolar region around the implants, and peak values of the bone strain during a 190-N vertical load or 30-degree lateral load were measured by a data acquisition system. The Kruskal-Wallis test and post-hoc pairwise comparisons were performed as statistical analyses. The median Periotest values of the RP5.0, RP4.3, and NP3.5 implants ranged from −6.59 to −7.34. The RP5.0 implant always showed the lowest bone strain around the implant, regardless of whether a vertical or lateral load was applied. Relative to the RP4.3 and NP3.5 implants, the RP4.3 implant produced a higher bone strain (by approximately 8%) under a vertical load but a lower bone strain (by approximately 25%) under a lateral load. This study confirmed that using a wider implant could relieve the bone strain around an immediately loaded implant with platform switching concept especially under lateral loading. View Full-Text
Keywords: implant diameter; platform switching; immediately loaded dental implant; bone strain; strain gauge analysis implant diameter; platform switching; immediately loaded dental implant; bone strain; strain gauge analysis
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Lung, H.; Hsu, J.-T.; Wu, A. .-J.; Huang, H.-L. Biomechanical Effects of Diameters of Implant Body and Implant Platform in Bone Strain around an Immediately Loaded Dental Implant with Platform Switching Concept. Appl. Sci. 2019, 9, 1998.

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