Effect of microthread design of dental implants on stress and strain patterns: a three-dimensional finite element analysis

2013 ◽  
Vol 58 (5) ◽  
Author(s):  
Reza Amid ◽  
Saeed Raoofi ◽  
Mahdi Kadkhodazadeh ◽  
Mohammad Reza Movahhedi ◽  
Maryam Khademi
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Dental Implants ◽  
Three Dimensional ◽  
Stress And Strain ◽  
Element Analysis ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element

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

2020 ◽  
pp. 18-24
Author(s):  
Mohammed Abusaad Siddiqui ◽  
Sudheer N ◽  
Dulala Vikram Raj ◽  
Aditi Chintamani Sabnis ◽  
Alluru Amrutesh ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Dental Implants ◽  
Three Dimensional ◽  
Element Analysis ◽  
Dimensional Finite Element ◽  
Fixed Prosthesis ◽  
Edentulous Patients ◽  
Area Of Concern ◽  
Three Dimensional Finite Element

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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