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Sökning: id:"swepub:oai:gup.ub.gu.se/322739" > Modelling the reson...

Modelling the resonant frequency associated with the spatio-temporal evolution of the bone-dental implant interface

Gershov, S. (författare)
Xie, J. (författare)
Shah, Furqan A. (författare)
Gothenburg University,Göteborgs universitet,Institutionen för kliniska vetenskaper, Avdelningen för biomaterialvetenskap,Institute of Clinical Sciences, Department of Biomaterials
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Shemtov-Yona, K. (författare)
Rittel, D. (författare)
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 (creator_code:org_t)
Elsevier BV, 2022
2022
Engelska.
Ingår i: Acta Biomaterialia. - : Elsevier BV. - 1742-7061. ; 154, s. 302-311
  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
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  • Dental implant stability is greatly affected by the mechanical properties of the bone-implant interface (BII), and it is key to long-term successful osseointegration. Implant stability is often evaluated using the Resonant Frequency Analysis (RFA) method, and also by the quality of this interface, namely the bone-implant contact (BIC). True to this day, there is a scarcity of models tying BIC, RFA and a spatially and mechanically evolving BII. In this paper, based on the contact/distance osteogenesis concept, a novel numerical spatio-temporal model of the implant, surrounding bone and evolving interface, was developed to assess the evolution of the interfacial stresses on the one hand and the corresponding resonant frequencies on the other. We postulate that, since the BIC percentage reaches saturation over a very short time, long before densification of the interface, it becomes irrelevant as to load transmission between the implant and the bone due to the existence of an open gap. Gap closure is the factor that provides continuity between the implant and the surrounding bone. The results of the calculated RFA evolution match and provide an explanation for the multiple clinical observations of a sharp initial decline in RFA, followed by a gradual increase and plateau formation. Statement of significance: A novel three-dimensional numerical model of an evolving bone-dental implant interface (BII) is presented. The spatio-temporal evolution of the bone-implant contact (BIC) and the BII, based on contact/distance (CO/DO) osteogenesis, is modeled. A central outcome is that, until BII maturation into a solid continuous bone (no open gap between CO-DO fronts), the bone-implant load transfer is hampered, irrespective of the BIC. The resonant frequencies’ evolution of the jawbone-BII-implant is calculated to reproduce the well-established implant stability analysis based on the Resonant Frequency Analysis. The results resemble those reported clinically, and here too, the determinant transition occurs only after interfacial gap closure. Those results should motivate clinicians to re-consider structural continuity of the BII rather than the BIC only. © 2022 Acta Materialia Inc.

Ämnesord

MEDICIN OCH HÄLSOVETENSKAP  -- Medicinsk bioteknologi -- Biomaterialvetenskap (hsv//swe)
MEDICAL AND HEALTH SCIENCES  -- Medical Biotechnology -- Biomaterials Science (hsv//eng)

Nyckelord

Bone implant contact
Bone implant interface
Numerical simulation
Osteointegration
Resonant frequency analysis
Dental prostheses
Numerical models
Quality control
Bone implant
Bone-implant interfaces
Frequency Analysis
Implant interfaces
Implant stability
Osteogenesis
Resonant frequency analyse
Spatiotemporal evolution
Natural frequencies

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Av författaren/redakt...
Gershov, S.
Xie, J.
Shah, Furqan A.
Shemtov-Yona, K.
Rittel, D.
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MEDICIN OCH HÄLSOVETENSKAP
MEDICIN OCH HÄLS ...
och Medicinsk biotek ...
och Biomaterialveten ...
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Acta Biomaterial ...
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Göteborgs universitet

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