Effect of Bone Levels on Abutment Screw Loosening in the Mandibular First Molar Region: A Three-Dimensional Finite Element Analysis
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Abstract
Background: Very few studies have investigated effect of bone levels on abutment screw loosening in the mandibular first molar region. The efficacy of dental implants is mostly contingent upon the stability of the abutment screw, which serves to connect the prosthetic element to the implant.
Materials and methods: A three-dimensional finite element model of a dental implant system was developed, comprising the implant, abutment, abutment screw, and adjacent bone. Geometric parameters were based on standard clinical dimensions, with bone represented as cortical and cancellous bone. Finite element analysis was conducted using ANSYS software to evaluate stress distribution.
Results: The analysis revealed a notable increase in stress on the abutment screw as bone levels decreased. Stress distribution varied with bone density, with maximum stresses observed at lower bone levels.
Conclusion: This study examines the impact of different amounts of bone on the stability of the abutment screw in the mandibular first molar area by a three-dimensional finite element analysis (FEA).