تقييم كفاءة فعالية مادة الكومبوزيت المقواة بألياف E الزجاجية المستخدمة فى إصلاح أنواع مختلفة من الخزف السني: دراسة مخبرية

الموضوعات

طب

روابط وملفات

التعريف والنوع

رقم الوثيقة

0e865176-50bb-431f-af72-377be5dc6387

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل ماجيستير

نوع الملف

pdf text

أسماء الملفات

1961266_1.pdf

بيانات النشر

ترجمة العنوان

Efficacy Evaluation of E- Glass Fiber Reinforced Composite Used for Different Porcelain Types Repairing: (In Vitro Study)

ألقاب المؤلفين

[{"name_ar":"أحلام أحمد الهنا","title_ar":"اعداد","title_en":"Preparation"},{"name_ar":"ميرزا علاف","title_ar":"اشراف","title_en":"Supervision"}]

اللغة

Arabic

المصدر والدورية

اسم المصدر

تقييم كفاءة فعالية مادة الكومبوزيت المقواة بألياف E الزجاجية المستخدمة فى إصلاح أنواع مختلفة من الخزف السني: دراسة مخبرية

المحتوى والصفحات

عدد الصفحات

119

ترجمة الملخص

introduction: The fracture of the prostheses is the second most common reason of failure after dental caries, which is likely to occur for several reasons. The problem is further exacerbated if the fracture occurs in a visible area, thus threatening the esthetic aspect. This creates a problem that must be addressed by the dentist to provide an urgent and appropriate solution by using a suitable technology to repair the fractured restoration intra orally without the need to replace it. Aim :This study aimed to evaluate the efficiency of the Short E- glass Fiber Reinforced Composite (SFRC) used to repair three types of dental porcelain. Materials & methods: The sample was composed of 60 upper and lower extracted premolar teeth, whose buccal surfaces were prepared (1 mm) and were fixed onto autopolymerised acrylic bases. 60 ceramic discs with diameter of 6 mm and thickness of 2 mm have been designed and devided into two main groups, each containing 30 discs. The first group (the control group) The second group(the experimental group) was designed with triangularly shaped cut with a thickness of 2 mm and a side length of 1 mm. Each group was divided into 3 subgroups according to porcelain type, each of which included 10 samples as follows 10 Zirconia discs,10 fldespathic porcelain discs and 10 IPS e.max Press .fractured segments were restored with(SFRC )after ceramic surface conditioning by sandblasting with 50 μm aluminum oxide particles for zirconia discs and by sandblasting followed by etching with 9% hydrofluric acid for feldespathic porcelain, the IPS e. max Press ceramic etched using hydrofluric acid after that applied silane to all samples, then allowed the SFRC to polymrize for 40 seconds. All the discs in the two groups were cemented to tooth surfaces using resin cement. All samples were subjected to pressure test using a Testometric device at 0.5 mm / min until fracture occurred. Statistical analyzes were carried out using SPSS 17, T-test for independent samples and ANOVA . Results: The results of this study showed statistically significant differences between the intact and repaired discs with(SFRC), at 95% confidence level (p <0,05). The results of resistance of the compressive forces of the intact discs were higher than in the case of the repaired disks in all groups This difference is the highest between the two groups of zirconia discs. CONCLUSIONS: Among the limitations of this study, it was concluded that the restoration of factured dental ceramic with (SFRC)material gives acceptable resistance in the case of Feldspathic and IPS Emax Press ceramics. In the case of Zirconia, replacement of the restoration is the optimal solution.

كلمات الباحثين

compressive strength, feldespathic porcelain, hort E- glass fiber reinforced composite, IPS e.max pre, Zirconia, الكومبوزيت المقواة بألياف E- الزجاجية, خزف IPS e.max press, خـزف فلدسباري, زيركونيا, قوة الضغط

إشراف وإعداد

الإشراف

ميرزا علاف

الإعداد

أحلام أحمد الهنا

الاقتباسات الببليوغرافية