Comparing Static, Dynamic and Impact Loading Behavior of Biomimetic Porous Dental Implants with Conventional Dental Implants (3D Finite Element Analysis).

Yıl 2020, Cilt: 7 Sayı: 3, 471 - 480, 27.12.2020

Ahmet Kürşad Çulhaoğlu , Prof. Dr. Hakan Terzioğlu

https://doi.org/10.15311/selcukdentj.776407

Cited By: 1

Öz

Giriş
Kemiğe benzer elastik modül değerleri ve kemik dokusunun gelişimin izin vermesi sebebi ile biomimetik poröz yapılar, konvansiyonel implantların yerine önerilmiştir. Ancak, farklı porözite oranına ve porözitenin farklı bölgelerde bulunmasını simüle edecek sınırlı çalışma vardır. Bu çalışmanın amacı, konvansiyonel dental implantlar ile çeşitli bölgelerinde poröziteye sahip ve farklı miktarlarda porozite içeren dört farklı biyomimetik implant tasarımı etrafındaki kortikal ve spongioz kemik dokusunda meydana gelen stres dağılım düzeylerini değerlendirmektir.
Gereç ve Yöntem
3 boyutlu sonlu eleman analizi için, üstçene posterior bölgede 2 adet implant üzerine yapılan 3 üyeli kanat uzantılı sabit bölümlü protez matematiksel olarak modellendi. Elde edilen model üzerine, dikey ve oblik uygulanmış; statik, dinamik ve çarpma yükleri uygulanmıştır. Vertikal yük olarak kronların merkezi fossaları üzerinde 300 N dikey yük uygulanmıştır. Oblik yüklemede her bir dişin fonksiyonel palatinal tüberkülüne 45 ° 'lik bir açı ile 50 N yük uygulanmıştır.
Bulgular
Çarpma yüklerinde, distaldeki konvansiyonel implant üzerinde aşırı stres değerleri oluşmuştur (1030 MPa). Bu değer titanyum alaşımının (Ti-6Al-4V) nihai gerilme mukavemetinden (930 MPa) daha fazladır. Sonuçlar, tüm yüzeyi gözenekli ve orta üçlü bölümü gözenekli implantların tüm yükleme koşulları için distal implantta daha düşük stres değerleri gösterdiği şeklinde özetlenebilir.
Sonuç
Stres dağılımı açısından; porözitenin yeri, porözite miktarından daha kritiktir. Çarpma yükleme, implant destekli protez için kritik bir parametredir. Biyomimetik poröz implantların tasarımı için çarpma yükünün gözlenmesi ve önlenmesi düşünülmelidir. Orta üçlüsü poröz biyomimetik implant tasarımı, çarpma yükleme stresini azaltmak için en başarılı tasarımdır.

Anahtar Kelimeler

Porous Biomimetic ımplant, Impact Loading, Finite Element Analysis

Destekleyen Kurum

Kırıkkale üniversitesi bilimsel araştırma projeler birimi

Proje Numarası

2014/020

Kaynakça

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