تحليل ميكانيكي حيوي لكسور زاوية الفك السفلي وتقنيات تثبيتها باستخدام طريقة العناصر المنتهية

الموضوعات

طب

روابط وملفات

التعريف والنوع

رقم الوثيقة

1006fc3c-5ea4-4c86-8a7b-e21828cdd82a

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل ماجيستير

نوع الملف

pdf text

أسماء الملفات

1962879_1.pdf

بيانات النشر

ترجمة العنوان

A Biomechanical Analysis of Mandibular Angle Fractures and their Fixation Techniques Using Finite Element Method

ألقاب المؤلفين

[{"name_ar":"خلدون درويش","title_ar":"اشراف","title_en":"Supervision"},{"name_ar":"محمد أيهم درويش","title_ar":"اشراف","title_en":"Supervision"},{"name_ar":"محمد يامن أيمن الشربجي المزيك","title_ar":"اعداد","title_en":"Preparation"}]

اللغة

Arabic

المصدر والدورية

اسم المصدر

تحليل ميكانيكي حيوي لكسور زاوية الفك السفلي وتقنيات تثبيتها باستخدام طريقة العناصر المنتهية

المحتوى والصفحات

عدد الصفحات

146

ترجمة الملخص

Introduction :Mandibular angle fractures are common, and they express the highest rate of postsurgical complications among other mandibular fractures. Currently, open reduction and internal fixation using plates and screws is considered the standard technique in the management of these fractures. Until now there is no consensus about the ideal configuration of plates and screws, and this is one of the most debated issues in maxillofacial trauma. Aim of study: To conduct a biomechanical comparison between different configurations of plates and screws used for the fixation of a mandibular angle fracture without maxillomandibular fixation using 3D finite element analysis. Materials and Methods :A 3D model of a mandible was constructed from a CBCT scan, then an unfavorable fracture in the angle area was simulated and fixation plates and screws were modeled and assembled with the mandible model in 10 study groups. These groups included different configurations of fixation by using asingle miniplate, two miniplates and inferior reconstruction plate with or without another superior miniplate. Ipsilateral molar clench was simulated to represent occlusal forces. Finally, finite element analysis was conducted to obtain the stress and strain measures and distribution in the model components. 140Results:All two miniplates fixation groups showed lower values than single miniplate fixation groups in terms of plate and screws equivalent (Von-mises) stress, maximum principal stress in cortical bone surrounding the screws, callus maximum principal strain and fracture line displacement. The highest plate and screws equivalent (Von-mises) stress was found in the single superior miniplate fixation groups, whereas the single inferior miniplate fixation groups showed the highest callus strain and fracture line displacement. Fixation with a single superior miniplate positioned on the lateral aspect of the mandible showed the highest maximum principal stress in cortical bone around screws. The application of an inferior border reconstruction plateshowed the lowest stress concentrations in the plate, screws and cortical bone when compared to all miniplate fixation groups, but the callus strain and fracture line displacement were similar to those in the single superior miniplate fixation where the miniplate is positioned above and medial to the external oblique ridge (Champy’s technique). Conclusions :The two plate fixation is the best configuration from a bio-mechanical point of view, but fixation with a single superior miniplate positioned above and medial to the external oblique ridge (Champy’s technique) is considered a biomechanically accepted minimally invasive technique for the treatment of a single non- comminuted mandibular angle fracture, Whilst the use of larger plates such as the reconstruction plate should be limited to cases with comminuted fracture

كلمات الباحثين

displacement, Finite element analysis, mandibular angle fracture miniplate, reconstruction plate, strain, stress, الإجهاد, الانزياح, الانفعال, الصفائح الصغيرة, تحليل العناصر المنتهية, صفائح إعادة البناء, كسر زاوية الفك السفلي

إشراف وإعداد

الإشراف

خلدون درويش, محمد أيهم درويش

الإعداد

محمد يامن أيمن الشربجي المزيك

الاقتباسات الببليوغرافية