Valuation of stress patterns in the peri implant bone of non-parallel implants supporting a long-cantilevered prosthesis: a 3D finite element analysis

Authors

  • Alluru Amrutesh Senior Lecturer, Department of Prosthodontics, Sri Balaji Dental College, Hyderabad, Telangana, India
  • Aditi Chintamani Sabnis Reader, Department of Prosthodontics, Sri Balaji Dental College, Hyderabad, Telangana, India
  • Anurag Lahoti Senior Lecturer, Department of Prosthodontics, Sri Balaji Dental College, Hyderabad, Telangana, India
  • Mohammed Abusaad Siddiqui Reader, Department of Prosthodontics, Sri Balaji Dental College, Hyderabad, Telangana, India
  • Sudheer N Professor, Department of prosthodontics, Kamineni Institute of Dental Sciences, Narketpally, Telangana, India
  • Dulala Vikram Raj Professor and HOD, Department of Prosthodontics, Sri Balaji Dental College, Hyderabad, Telangana, India

DOI:

https://doi.org/10.31878/ijcbr.2020.64.05

Keywords:

Peri Implant Bone, Non Parallel Imnplants, Cantilevered Prothesis, Stress Patterns

Abstract

The treatment modality for completely edentulous arches has shifted from complete dentures to dental implants during the last 15-20 years. Tilting of implants has reduced the concern of resorbed posterior ridges in completely edentulous patients with “All-on-four” and “All-on-six” concept of dental implants. The purpose of this study is to compare the biomechanical behaviour of the “All-on-four”, “All-on-six” models with tilted distal implants at different angulations of 30 and 45 ° with four parallel placed implant-supported fixed prosthesis, and six parallel placed implant-supported fixed prosthesis models as controls using three-dimensional finite element analysis. The results showed that in all the models, in cancellous bone, cortical bone, implant and prosthesis – “All-on-four” model with distal implants tilted at an angulation of 30° showed stress values less than or equivalent to all the other models except on the implant in the presence of cantilever and on prosthesis during full mouth biting load where maximum stresses were observed. The study shows that All-on-four concept with tilted distal implants at an angulation of 30° showed stress values favourable for the rehabilitation of completely edentulous maxilla, but the presence of cantilever remains an area of concern.

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Published

2020-10-29

How to Cite

Amrutesh, A., Sabnis, A. C., Lahoti, A., Siddiqui, M. A., N, S., & Raj, D. V. (2020). Valuation of stress patterns in the peri implant bone of non-parallel implants supporting a long-cantilevered prosthesis: a 3D finite element analysis. International Journal of Clinical and Biomedical Research, 18-24. https://doi.org/10.31878/ijcbr.2020.64.05

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Section

Original Research Articles