Atena Galuscan, Daniela Jumanca, Ramona Amina Popovici, Angela Codruta Podariu, Laura Cristina  Rusu, Teodora Stefanescu<br>SEM Analysis of Hybrid Layer Adhesion<br>in Substances Used for Dentinal Hypersensitivity

Atena Galuscan, Daniela Jumanca, Ramona Amina Popovici, Angela Codruta Podariu, Laura Cristina Rusu, Teodora Stefanescu
SEM Analysis of Hybrid Layer Adhesion
in Substances Used for Dentinal Hypersensitivity

Abstract:

The objective of the present study was to determine the adhesion level of various desensitizing agents and a model for the hybrid layer on dental surfaces. Also, this study aims to establish if the composition and presentation of the desensitizing agent determine and influence the hybrid layer and its adhesion level. The study was conducted on 33 human teeth, third molars and premolars, extracted for orthodontic purposes. After extraction, each tooth was sectioned into two pieces thus obtaining 33 section pairs. One half of the samples were randomly divided in three groups and treated with three different desensitizing agents: Gluma Desensitizer (Hereus), Fluor Protector (Ivoclar) and Tooth Mouse (GC), available on the market and commonly used in dental offices, followed by SEM (scanning electron microscopy). The other 33 samples served as control group. The adhesion of desensitizing agents is achieved by formation of a hybrid layer on the dental surface and by creation of micro-tags which differ depending on the product’s physical-chemical proprieties. Conclusions: With the aid of SEM imaging we were able to prove that Gluma Desensitizer generates the most homogenous hybrid layer on dental surfaces, followed by Fluor Protector and Tooth Mouse. The adhesive process is influenced by the presentation of the desensitizer (fluid or paste) and by the type of physico-chemical reaction leading to hybrid layer formation. Key Words: dentinal hypersensivity, electronomicroscopy, desentizing agents, hybrid layer, adhesion

Issue: 2016, Volume 67, Issue 6

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