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Mechanical and modal analysis of different implant strategies for loss of three teeth with bone atrophy in the maxillary posterior region

Author

Listed:
  • Jianguo Zhang
  • Hu Hou
  • Peng Chen
  • Benhao Sun
  • Fengling Hu
  • Youcheng Yu
  • Liang Song

Abstract

Purpose: This study aimed to evaluate the stress distribution and secondary stability involved in five implant strategies, including implant-supported prostheses (ISP) and tooth-implant-supported prostheses (TISP), used for bone atrophy in the maxillary posterior region with teeth loss using finite element analysis, and to explore the more desirable implant methods. Methods: Five implant strategies were made to analyze and compare: M1, implant-supported prosthesis consisting of a short implant with a regular implant; M2, implant-supported prosthesis consisting of a tilted implant with a regular implant; M3, cantilever structure; M4, tooth-implant-supported prosthesis consisting of a short implant with a regular implant; M5, tooth-implant-supported prosthesis consisting of a regular implant, and M6, with only the natural teeth as a control group. Dynamic loading of the above models was performed in finite element analysis software to assess the stress distribution of the bone tissue and implants using the von Mise criterion. Finally, the secondary stability of different models was evaluated by modal analysis. Results: The maximum stress distribution in the cortical bone in M1(60 MPa) was smaller than that in M2(97 MPa) and M3(101 MPa), The first principal strain minimum was obtained in M2 (2271με). M4 (33 MPa, 10085 Hz) with the best mechanical properties and highest resonance frequency. But increased the loading on the natural teeth. Conclusions: Short implants and tilted implants are both preferred implant strategies, if cantilever construction is necessary, a tooth-implant-supported prosthesis consisting of a short implant and a regular implant is recommended.

Suggested Citation

  • Jianguo Zhang & Hu Hou & Peng Chen & Benhao Sun & Fengling Hu & Youcheng Yu & Liang Song, 2025. "Mechanical and modal analysis of different implant strategies for loss of three teeth with bone atrophy in the maxillary posterior region," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 28(14), pages 2101-2110, October.
    • Handle: RePEc:taf:gcmbxx:v:28:y:2025:i:14:p:2101-2110
    DOI: 10.1080/10255842.2024.2358363
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