توزع الإّجهادات في الرباط حول السني تحت تأثير قوى مختلفة الشدٍة والاتجاه ضمن درجات مختلفة من امتصاص العظم السنخي باستخدام تحليل العناصر المنتهية: دراسة مخبرية

الموضوعات

طب

روابط وملفات

التعريف والنوع

رقم الوثيقة

f58919f3-f651-4c91-9d0f-9d0968b30dbd

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل ماجيستير

نوع الملف

pdf text

أسماء الملفات

1966023_1.pdf

بيانات النشر

ترجمة العنوان

Stress Distribution In The Periodontal Ligament Induced By Forces With Different Intensities And Directions Within Different Alveolar Bone Resorption Levels Using The Finite Element Analysis Method: In Vitro Study

ألقاب المؤلفين

[{"name_ar":"رزان خطاب","title_ar":"اشراف","title_en":"Supervision"},{"name_ar":"رولا كیلاني","title_ar":"اعداد","title_en":"Preparation"},{"name_ar":"محمد بسام أبو حرب","title_ar":"اشراف","title_en":"Supervision"}]

اللغة

Arabic

المصدر والدورية

اسم المصدر

توزع الإّجهادات في الرباط حول السني تحت تأثير قوى مختلفة الشدٍة والاتجاه ضمن درجات مختلفة من امتصاص العظم السنخي باستخدام تحليل العناصر المنتهية: دراسة مخبرية

المحتوى والصفحات

عدد الصفحات

0

ترجمة الملخص

Introduction: The entity of the periodontal ligament helps to absorb and distribute the stressess developed during any tooth contact either masticatory or traumatic function into the alveolar process, but there are several factors may affect the integrity of the periodontal structure causing the destruction of the connective matrix and cells, the loss of fibrous attachment and alveolar bone resorption. these factors may be due to occlusal or parafuctional forces subjected into the teeth with different intensities and directions. from this point of view this project was designed to study and evaluate the effect of these forces on the periodontal ligament within different conditions of the alveolar bone .Aim of study :Investigation of the distribution of stresses generated from forces with different intensities and direction) within the periodontal ligament. and the investigation of the role of alveolar bone resorption in the distribution of stresses within the periodontal ligament. Materials and methods :Five three-dimensionalfinite element models where built for an maxillary central right incisor with its periodontal structures derived from a CBCT, these models included a maxillary central incisor with normal and reduced alveolar bone ( 1-2-4-6 mm ) of its normal hight representing slight-moderate-advanced periodontitis. Each model then were subjected to different load conditions: (100N) 118occlusal loading at 45° applied at the cingulum, (500N)edge to edge load at 45° on the center of the incisal edge,(800N) traumatic load at 90° on the buccal surface. maximum principle stress tool was used to study the distribution of the stress in the periodontal ligament. Results :Results showed different stress distribution in the periodontal ligament depending on the force applied and the level of alveolar bone resorption, as it generated tensile and compressive stresses with different values and locations.conclusions :Based on the results of this study there are two main conclusions : the more alveolar bone loss that occurs ,the greater the stress increase in the periodontal ligament under same load conditions. values and locations of tensile and compressive stresses in the periodontal ligament were determined according to the ( intensity, direction and place of application) of the force applied on tooth surface .Reduction of alveolar bone height had little effect on the degree of periodontal ligament stress until six millimeters of bone support had been lost

كلمات الباحثين

alveolar bone loss, finite element analysis, periodontal ligament, Three dimensional models, الرباط حول السني, امتصاص العظم السنخي, تحميؿ العناصر المنتهية, نماذج ثلاثية الأبعاد

إشراف وإعداد

الإشراف

رزان خطاب, محمد بسام أبو حرب

الإعداد

رولا كیلاني

الاقتباسات الببليوغرافية