DÖRT FARKLI TIP ALVEOLER DEFEKTE SAHIP MAKSILLADA DÖRTLÜ ZIGOMATIK İMPLANT UYGULAMASININ BIYOMEKANIK ETKILERININ DEĞERLENDIRILMESI
- 15 April 2020
- journal article
- Published by The Journal of Faculty of Dentistry of Ataturk University in Atatürk Üniversitesi Diş Hekimliği Fakültesi Dergisi
Abstract
Amaç: Bu çalışmanın amacı, dört farklı alveoler defekt tipine sahip maksillada dörtlü zigomatik implant kullanımının biyomekanik etkilerini değerlendirmektir.Materyal ve Metod: SolidWorks Computer-Aided Design (CAD) programı kullanılarak insan kafatası, zigoma implantları, bar ataşman ve hibrit protez 3 boyutlu olarak simüle edilmiştir. İntak modelde, farklı alveolar defekt senaryolarını taklit etmek için dört farklı defekt tipi modellendi. Tüm modellerd, birinci ve ikinci premolar diş bölgelerinde dört adet zigomatik implant yerleştirildi, sonrasında modellenen parçaların montajı tamamlandı. Veriler ANSYS Workbench yazılımına aktarıldı, ve 300 N masseterik kuvvet ve protez üzerinde 150 N dikey oklüzal kuvvet uygulandı, kemik/implantlardaki Maksimum Von Mises Stres ve deformasyon değerleri renkli dağılım skalaları ile görselleştirildi ve karşılaştırmalı olarak değerlendirildi. Bulgular: Beş model arasında, kemikte görülen en yüksek Von Mises Stres değeri, tek taraflı kusurlu (1/3 kusurlu) maksillada bulundu. Deformasyon değeri 2/3 kusurlu maksilla modelinde en yüksek bulundu. Asimetrik defekt modellerinde, maksilla'nın sağlam kısmında daha yüksek stres değerleri elde edildi. Simetrik kusurlu modellerde, stresin daha homojen bir şekilde dağıldığı görüldü. Sonuç: Kortikal kemik kalınlığı, defektin büyüklüğü ve lokalizasyonu implantın stabilitesi ve başarısı ile yakından ilişkili faktörler arasındadır. Anahtar Kelimeler: Zigomatik implant, kuad zigoma, maksillar defekt, sonlu elemanlar analizi Evaluation of Biomechanical Effects of Quad Zigomatic Implant Applications in Four Different Maxillary Defect Types Abstract Purpose: The purpose of this study is to evaluate the biomechanical effects of quad zygomatic implant use in four different type alveolar defected maxilla. Materials and Methods: Three dimensional models of human skull, zygomatic implants, bar attachment and hybrid prosthesis was modeled using SolidWorks Computer-Aided Design (CAD) program. Four different defect locations were modeled on intact model to mimic different alveolar defect scenarios. In all models, four zygomatic implants were placed on maxilla models at the location of first premolar and second premolar tooth, assembly of the modeled parts were completed. The data were processed by ANSYS Workbench software, 150N vertical occlusal and 300N masseteric load were simulated on modeled prosthesis. The Maximum Von Mises Stress in bone/implants and deformations were visualized and comparatively evaluated with color distribution scale. Results: Among five models, the Maxium Von Mises Stress, in bone, was found in the unilateral defected (1/3 defected) maxilla. The maximum deformation was found in the 2/3 defected maxilla model. In the asymmetric defect models, higher stress values were obtained in the intact part of maxilla. In the models with symmetric defect, it was found that the stress was distributed more homogeneously. Conclusion: Cortical bone thickness, defect size and localization are among the factors closely...Keywords
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