Mona Ionas, Marioara Moldovan, Marcela Trif, Codruta Sarosi, Camelia Alb, Tiberiu Ionas, George Liviu Popescu<br>Qualitative Evaluation by Means of SEM on the Qualities of the Hybrid Layer Formed by an Experimental Self Etching Adhesive

Mona Ionas, Marioara Moldovan, Marcela Trif, Codruta Sarosi, Camelia Alb, Tiberiu Ionas, George Liviu Popescu
Qualitative Evaluation by Means of SEM on the Qualities of the Hybrid Layer Formed by an Experimental Self Etching Adhesive

Abstract:

The presence of the hybrid layer proves the existence of a micro mechanical bonding between dentine and resin. The aim of this study was to observe the aspects of an experimental adhesive at SEM, compared to two commercial adhesives. 30 molars extracted for orthodontic reasons were used as basis for preparing 60 cavities under a specific method. The adhesive systems under study were applied light-cured and the cavities were filled with composite material. The teeth were sectioned and the resulted surfaces were examined at SEM. The presence of the hybrid layer is well noticeable at all three adhesive systems studied but its characteristics differ from one material to the other. The chemical composition of the adhesives is reflected in the structural modifications, which are probably basis for the adhesion. The clinical significance of the morphological evidence is still unknown. According to the SEM analysis one can see that there is no standard hybridisation for the adhesive systems. The experimental adhesive system evaluated under SEM showed potential to form a hybrid layer and an adhesive layer with morphological aspects comparable with the commercial ones taken into study. Keywords: adhesive system, hybrid layer, SEM

Issue: 2011, Volume 62, Issue 5

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