Resonant frequency analysis of dental implants

Abstract : Dental implant stability influences the decision on the determination of the duration between implant insertion and loading, This work investigates the resonant frequency analysis by means of a numerical model. The investigation is done numerically through the determination of the eigenfrequencies and performing a steady state response analyses using a commercial finite element package. A peri-implant interface, of simultaneously varying stiffness (density) and layer thickness is introduced in the numerical 3D model in order to probe the sensitivity of the eigenfrequencies and steady state response to an evolving weakened layer, in an attempt to identify the bone reconstruction around the implant. For the first two modes, the resonant frequency is somewhat insensitive to the healing process, unless the weakened layer is rather large and compliant, like in the very early stages of the implantation. A "Normalized Healing Factor" is devised in the spirit of the Implant Stability Quotient, which can identify the healing process especially at the early stages after implantation. The sensitivity of the RFA to changes of mechanical properties of periprosthetic bone tissue seems relatively weak. Another indicator considering the amplitude as well as the resonance frequency might be more adapted to bone healing estimations. However, these results need to be verified experimentally as well as clinically.
Document type :
Journal articles
Complete list of metadatas

Cited literature [48 references]  Display  Hide  Download

https://hal-upec-upem.archives-ouvertes.fr/hal-02132150
Contributor : Guillaume Haiat <>
Submitted on : Thursday, May 16, 2019 - 6:36:43 PM
Last modification on : Friday, October 4, 2019 - 1:21:00 AM

File

generic_paper.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : hal-02132150, version 1
  • ARXIV : 1905.07154

Collections

Citation

D Rittel, A Dorogoy, G. Haiat, K Shemtov-Yona. Resonant frequency analysis of dental implants. Medical Engineering and Physics, Elsevier, 2019. ⟨hal-02132150⟩

Share

Metrics

Record views

19

Files downloads

54