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Comparative study of microleakage between nano and hybrid composite ( an in vitro study)

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

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 Publication date 2016
and research's language is العربية
 Created by Shamra Editor




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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.


Artificial intelligence review:
Research summary
تهدف هذه الدراسة إلى تقييم ومقارنة التسرّب الحفافي بين الراتنج المركب النانومتري والراتنج المركب الهجين. تألفت العينة من 40 ضاحكًا سليمًا مقلوعًا لأغراض تقويمية، حيث تم تقسيمها إلى مجموعتين: الأولى رُممت بالراتنج المركب النانومتري (Z350) والثانية بالراتنج المركب الهجين (Z250). بعد الترميم، وُضعت العينات في الحاضنة الحرارية لمدة شهر مع تعريضها لدورات حرارية، ثم غُمست في محلول أزرق الميتلين 0.5% لمدة 24 ساعة. تم إجراء مقاطع طولية ودراسة التسرّب الحفافي باستخدام المكبرة. أظهرت النتائج عدم وجود فروق ذات دلالة إحصائية بين النوعين من الراتنج من حيث التسرّب الحفافي، على الرغم من أن متوسط التسرّب الحفافي للراتنج الهجين كان أعلى قليلاً من الراتنج النانومتري. تشير الدراسة إلى أن صغر حجم الذرات المالئة وزيادة نسبة التحميل في الراتنج النانومتري قد تساهم في تقليل التسرّب الحفافي.
Critical review
تعتبر هذه الدراسة مهمة في مجال طب الأسنان الترميمي، حيث تقدم مقارنة بين نوعين من الراتنجات المركبة المستخدمة بشكل شائع. ومع ذلك، يمكن توجيه بعض النقد البنّاء لتحسينها. أولاً، كان من الممكن زيادة حجم العينة للحصول على نتائج أكثر دقة. ثانيًا، لم تتناول الدراسة تأثير العوامل الأخرى مثل نوع الأسنان أو حالة الفم على نتائج التسرّب الحفافي. كما أن الدراسة اقتصرت على استخدام أزرق الميتلين كمؤشر للتسرّب، وكان من الممكن استخدام مؤشرات أخرى لتعزيز النتائج. بشكل عام، تعتبر الدراسة خطوة جيدة نحو فهم أفضل للمواد الترميمية، ولكنها تحتاج إلى مزيد من البحث لتأكيد النتائج وتوسيع نطاقها.
Questions related to the research
  1. ما هو الهدف الرئيسي من هذه الدراسة؟

    الهدف الرئيسي هو تقييم ومقارنة التسرّب الحفافي بين الراتنج المركب النانومتري والراتنج المركب الهجين.

  2. ما هي المواد المستخدمة في هذه الدراسة؟

    تم استخدام الراتنج المركب النانومتري (Z350) والراتنج المركب الهجين (Z250) في ترميم الأسنان.

  3. ما هي النتائج الرئيسية التي توصلت إليها الدراسة؟

    النتائج أظهرت عدم وجود فروق ذات دلالة إحصائية بين النوعين من الراتنج من حيث التسرّب الحفافي، على الرغم من أن متوسط التسرّب الحفافي للراتنج الهجين كان أعلى قليلاً.

  4. ما هي التوصيات التي خلصت إليها الدراسة؟

    توصي الدراسة بأن صغر حجم الذرات المالئة وزيادة نسبة التحميل في الراتنج النانومتري قد تساهم في تقليل التسرّب الحفافي، ولكنها تدعو إلى مزيد من البحث لتأكيد النتائج.


References used
BEUN,S; GLORIEUX,T; DEVAUXE,J; VREVEN,J; LELOUP,G. Characterization ofnanofilled compared to universal and microfilled composites. J Dent Mater. 2007 23(1):51-9
MITRA,S.B. Nanoparticles for Dental Materials: Synthesis, Analysis, and Application. In: Subramani K, Ahmed W, editors. Emerging Nanotechnologies in Dentistry Materials, Processes and Applications. Waltham, USA: Elsevier Inc. 2012. p. 15-3
NEELAKANTAN, P; JOHN,S; ANAND,S; SURESHBABU,N; SUBBARO,C. Fluo-ride release from a new glass-ionomer cement. Oper Dent. 2011;36(1):80-5
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Introduction :The demand for posterior aesthetic restorations has dramatically increased in recent years. Several new materials have been developed with improved aesthetic, adhesive and mechanical properties. Theoretically, nano-structured dental resin omposites are purported to have increased wear and hardness resistance compared with hybrid composites and may favor the achievement of restoratives with better long-term performance. Aim: The wear resistance of different types of resin composites were evaluated in the in vitro study. Material and methods :Two nanohybrid restorative composites -Tetric®EvoCeram (Ivoclar-Vivadent) and CeramXTM(Dentsply) - were compared with a microhybrid material - Tetric®Ceram (Ivoclar-Vivadent) and hybrid material Spectrom (Dentsply) . wear resistance : fifteen specimens (3x3 mm) of each material were subjected to wear tests . The data were analyzed by 1-way ANOVA(<=0.5). Results : The Tetric®EvoCeram composite resin exhibited significantly less wear than the CeramX and Tetric®Ceram material . Conclusions :In terms of wear resistance, nano-structured composites may perform either similarly or comparatively better than a microfilled and hyprid composite . nanohybrid restorative composites can thus be considered as a good restorative material.
This study aims to in vivo evaluate the direct microleakage, in class V composite restoration after isolation using the modified metal matrix or gingival retraction cord impregnated with Adrenaline. Materials and Methods: the research sample consiste d of 15 patients; each patient has two premolars at least prepared to be extracted for Orthodontic reasons in the same jaw. This sample divided into two groups according to the place, the right premolars group and the left premolars group, whether was upper or lower. Class V cavity was prepared with a specific dimensions on the buccal surface only, then isolated teeth of the first set by modified metal matrix while isolated teeth of the second set by a gingival retraction cord impregnated with Adrenaline. Teeth restored by composite resin, and then was extracted in the same meeting and studied the microleakage winning directly during restoration. .Results: there was statistical difference between the modified metal matrix and the gingival retraction cord impregnated with Adrenaline. Because modified metal matrix had achieved the lowest leakage rate.
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