دراسة مقارنة بين الجيل الخامس و الجيل السادس من المواد الرابطة للراتنج المركب من حيث معدل التسرب الحفافي : دراسة مخبرية

الملخص EN

Aim: The aim of this study was to compare the microleakage of two generations of composite bonding agents (the fifth and sixth generations).

Materials and Methods: the sample consists of forty extracted premolars for orthodontics purposes.

Class v cavity was prepared with specific dimensions on the buccal surface (3mm in mesio-distal dimension and 2mm in gigngivo-occlusal dimension) and 0.5 mm from the cementoenamel junction.

The sample was divided into two groups.

In group A, we applied the fifth generation bonding agent (Excite f) and the two steps sixth generation (AdheSE) to group B then the teeth were restored by tetric N ceram.

After that, the sample was 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, and the microleakage.was studied.

Results: there was no statistical significant difference between the fifth and sixth generation with P > 0.05