Stress Distribution Analysis of Threaded Implants for Digital Dentistry

Int J Environ Res Public Health. 2022 Oct 4;19(19):12674. doi: 10.3390/ijerph191912674.

Abstract

In this study, stability evaluation is performed through structural analysis based on digital dental implant design variables. The design variables include the implant length and thickness, cortical bone thickness, and elastic modulus of the cancellous bone. Subsequently, the stress in the external cortical bone, in which numerous nerves exist, is analyzed. Results show that stress increases as the implant length decreases. However, when the implant length is 10 mm, the stress decreases, owing to stress dispersion at the lower section of the implant. Moreover, as the implant thickness increases, the stress decreases. As the elastic modulus of the cancellous bone decreases, the stress exerted on the cancellous bone decreases; consequently, the stress exerted on the cortical bone increases. Finally, as the thickness of the cortical bone increases, the stress decreases when a vertical load is applied. However, when a load is applied in the oblique direction, the stress increases. Based on data obtained via digital radiography, which is a digital dental technology, a more precise implantation plan will be established by substituting the data via structural analysis.

Keywords: ANSYS mechanical; bone material properties; computer-aided engineering; cortical bone; implant length; implant thickness.

MeSH terms

  • Computer Simulation
  • Dental Implants*
  • Finite Element Analysis
  • Radiography, Dental, Digital
  • Stress, Mechanical

Substances

  • Dental Implants

Grants and funding

This research received no external funding.