دراسة مقارنة مخبريّه بين الرّاتنج المركّب النّانومتري والرّاتنج المركّب الهجين من حيث التسرّب الحفافي

Authors

  • منذر حداد
  • طارق عثمان

Abstract

هدف البحث : تهدف هذه الدراسة المخبرية إلى تحري معدّل التسرّب الحفافي للرّاتنج المركّب النّانومتري و الرّاتنج المركّب الهجين و المقارنة بينهما . طرائق البحث و مواده : تألّفت العينة من 40 ضاحك سليم مقلوع لأغراض تقويميّة , تمّ تهيئة حفر من الصّنف الخامس بأبعاد ثابتة على السّطح الدّهليزي, قُسمت العينة إلى مجموعتين المجموعة A رُممت بالرّاتنج المركّب النّانومتري ( Z350 ) , المجموعةB رُممت بالرّاتنج المركّب الهجين (Z250 ) , وُضعت العينات ضمن الحاضنة الحراريّة لمدة شهر مع التّعريض لدورات حراريّة , ثم غُمست العينات بأزرق الميتلين 0,5% لمدة 24 ساعة, و أُجريت مقاطع طوليّة (دهليزيّة حنكيّة ) , ودُرس التسرّب الحفافي الحاصل تحت المكبّرة . النتائج : أظهرت الدراسة الإحصائية عدم وجود فروق هامّة إحصائياً في التسرّب الحفافي لكل من الرّاتنج المركّب النّانومتري و الرّاتنج المركّب الهجين . The aim : This study aims to evaluate and compare the microleakage between nano and hybrid composite. Materials and Methods : the sample consisted of forty extracted premolars for orthodontics purposes , class v cavities were prepared with a specific dimensions on the buccal surface. The sample divided into two groups ; group A restored by nanocomposite ( Z350) , group B restored by hybrid composite ( Z250) , after that, the samples were placed in the incubator with thermo cycling for a month ,The samples were then immersed in 0.5 % methelyne blue dye for 24 hours , each tooth was mesial-distal sectioned vertically , finally, of all samples was studied using stereomicroscope to evaluated the microleakage . Results : there was no statistical significant difference between the nano and hybrid composite according to microleakage.

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Published

2017-07-06

How to Cite

1.
حداد م, عثمان ط. دراسة مقارنة مخبريّه بين الرّاتنج المركّب النّانومتري والرّاتنج المركّب الهجين من حيث التسرّب الحفافي. Tuj-hlth [Internet]. 2017Jul.6 [cited 2024Apr.23];38(4). Available from: https://journal.tishreen.edu.sy/index.php/hlthscnc/article/view/2935

Issue

Vol. 38 No. 4 (2016): العلوم الصحية

Section

Articles

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