Investigating the Effect of Neck Length and Abutment Angle on Stress Distribution in Dental Implant Fixtures Using the Finite Element Method

Abstract

Objective: The purpose of this research was to investigate the effect of neck length and abutment angle on stress distribution in dental implant fixtures using the finite element method. First, the K-Three fixture of Kimia Medical company with K.M.E brand and abutments with 0, 1 and 2 mm necks with 0, 15 and 25 degree angles were selected for study and then their modeling was done using Solid works software and then stress distribution analysis in The fixture of each designed model was done using Abaqus software.

Materials and methods: In this research, the effect of neck length and abutment angle on stress distribution in dental implant fixture was investigated by finite element method.

First, by using Solid works software, the desired models were simulated, and then, using Abacus software, the stress was checked based on the amount of standard forces applied in the cortical bone of the lower jaw.

Result: The analysis performed in Abaqus software showed that increasing the abutment angle from 0 to 25 degrees, the amount of stress increases by about 30% for the first 15 degrees and about 1% for the second 10 degrees, and as the length of the abutment neck increases from 0 mm to increases by 2 mm, the amount of stress decreases by 2.5% per mm.

It seems that the tension has a direct relationship with the abutment angle and an inverse relationship with the length of the abutment neck.