FARKLI UZUNLUKTAKİ SİLİNDİRİK İMPLANTLARDA OLUŞAN STRES MİKTARININ SONLU ELEMANLAR ANALİZİ İLE İNCELENMESİ

Abstract

Bu çalışmanın amacı, eşit yükler altında farklı uzunluktaki silindirik implantlarda oluşan stres dağılımının sonlu elemanlar stres analizi ile değerlendirilmesidir. Çalışmamızda 3,2 mm çapında 8 mm ve 10 mm uzunluğunda silindirik implantlar karşılaştırılmıştır. Çalışmamızda sonlu elemanlar stres analizi ile 150 N oblik yük altında implantlarda ve kemikte oluşan stres- gerinim miktarları incelenmiştir. Sonlu elemanlar analizi sonuçlarına bakıldığında; implantlar üzerinde oluşan Von Mises stresin istenilen aralıkta olduğu ve 4. sertlik titanyumun dayanım sınırları içerinde yer aldığı fakat kemikte oluşan asal gerinim miktarının ise Frost’un “Mekanostat” teorisinde belirtilen sınırlardan yüksek olduğu gözlenmiştir. Sonuç olarak 8 ve 10 mm uzunluğa sahip silindirik implantlarda, aradaki uzunluk farkının ne implantlarda ne de kemikte oluşan stres miktarını önemli ölçüde etkilemediği görülmüştür.

Keywords

• Silindirik implantlar, sonlu elemanlar analizi, biyomekanik analiz

Evalution of Stress Amounts on Different Length Cylindric Implants via Finite Element Analysis

Abstract

The aim of this study was to investigate stress amounts on different length cylindric implants with finite element analysis. In our study 3,2 mm diameter 8 mm and 10 mm length cylindric implants were compared. We analyzed stress-strain amounts of implants and bone, under 150 N oblique loads with finite element analysis. According to finite element analysis results, Von Mises stres on implants were within durability limits of grade 4 titanium. However, strain amounts on bone were out of range according to the Frost’s “Mekanostat” theory . In conclusion, the length is not a main factor to determine the stress levels on the implants and bone in 8 and 10 mm length cylindric implants.

Keywords

• Cylindric implants, Finite element analysis, Biomechanical analysis

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