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Assessment of stress distribution using clip/bar attachment design in maxillary implant-supported overdentures in comparison with ball/socket attachment design : 3D finite element analysis /

Salamah Wasfi Almasry

Assessment of stress distribution using clip/bar attachment design in maxillary implant-supported overdentures in comparison with ball/socket attachment design : 3D finite element analysis / تقييم توزيع الجهد بإستخدام وصلة القضيب والمشبك في الأطقم المحموله العلويه المدعمه بالغرسات مقارنة بوصلة الكرة والتجويف : : دراسة تحليل العناصر المحدودة ثلاثية الأبعاد Salamah Wasfi Almasry ; Supervised Hamdi Abo Alfotooh , Mostafa Helmy - Cairo : Salamah Wasfi Almasry , 2018 - 126 P. : charts , facsimiles ; 25cm

Thesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Prosthodontics

Aim: Is to compare the stress distribution pattern in two different attachment systems namely: Bar\clip. And Ball\socket. In implant supported overdenture at different zones in bone surrounding dental implant with application of force with different magnitudes and directions using 3D Finite element analysis. Material & Methods: 3d model of two edentulous maxilla restored with implant supported overdenture using different attachment designs. Amount of 50, 100 and 150 N load in deferent directions (vertical and oblique) were applied through the overdenture simultaneously on posterior dentition by aid of finite element analyses software. Loads were directed toward the central fossa. Stress analysis was carried out to detect the generated stresses on bone surrounding dental implants. Results: When comparing between both attachments, the maximum Von Mises stresses in vertical loads of 50, 100, and 150 N and both 50 N oblique loads. Ball attachment shows lower stress levels at the cancellous as well as cortical bone surrounding dental implants



ball/socket clip/bar Stress distribution