تأثير معالجة سطح القالب المعدني بتقنيات مختلفة في قوة ارتباطه بالخزف السني: دراسة مخبرية

الموضوعات

طب

روابط وملفات

التعريف والنوع

رقم الوثيقة

046125ee-e6a9-4b1f-87eb-93e00d7ffe46

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل ماجيستير

نوع الملف

pdf text

أسماء الملفات

1963475_1.pdf

بيانات النشر

ترجمة العنوان

Effect of surface management of metal core using different techniques in bond strength with dental ceramic: In Vitro Study

ألقاب المؤلفين

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اللغة

Arabic

المصدر والدورية

اسم المصدر

تأثير معالجة سطح القالب المعدني بتقنيات مختلفة في قوة ارتباطه بالخزف السني: دراسة مخبرية

المحتوى والصفحات

عدد الصفحات

96

ترجمة الملخص

The metal ceramic bond is one of the most important factor in the success of metal ceramic prosthesis, many studies have been performed to improve metal ceramic bond as metal oxidation before ceramic application, sandblasting, grinding and bond agents’ application, but no standard technique has been performed. Purpose: the purpose of this study was to evaluate the bond between non precious metal alloy (Nickel-Chrome) which treated with different methods and ceramic .Materials and methods: Forty-nine metal plates were fabricated then divided into seven groups according to the method of treatment to metal surface: group (1): control group with no treatment, group (2): application the surface grinding with rough diamond burs according to the instructions of the manufacture with one direction under water, group (3) application the surface grinding with rough diamond burs with multidirectional ways, group(4): sandblasting of the surface with 50 μm aluminum oxide particles at a pressure of 2 and the distance of (10 mm) for (10s) , group (5) same group 4 but with 110 μm aluminum oxide particles, group (6) application of hydrofluoric acid with concentration of 10% for 60 (s) , group(7) ) application of hydrofluoric acid with concentration of 10% for 90(s).All specimens were ultrasonically cleaned with ethanol alcohol and then subjected to shear bond strength test using the general mechanical testing device, with progress speed of the working head of 1 mm/min until fracture occurs. Results: the mean fracture resistance of the (5) group was showed the highest value than other group. There were significant difference between group (2) and (3) therefor the grinding in multidirectional ways has a higher value than one direction.No significant difference between the application of hydrofluoric acid for (60) and (90) seconds.Conclusions: Within the limitation of this study:1-There is strong correlation between surface treatment and fracture resistance.2-The best method of treatment is sandblasting with 110-μm aluminum oxide particles and the worst method is hydrofluoric application.3-The direct of burs when grinding affect metal ceramic bond and multidirectional way is preferred.

كلمات الباحثين

adhesive failure, bond strength, cohesive failure, dental ceramic, metal alloy

إشراف وإعداد

الإشراف

أحمد السيد, محمد سلطان

الإعداد

يوسف حامشلي

الاقتباسات الببليوغرافية