Characterization of dentin surface after application of desensitizing agents: SEM analysis

Sandra Kiss Moura, Tania Christina Simões, Carolina Cury Lopes, Claudia Suzana da Silva, André Tomazini Gomes de Sá, Linda Wang

Resumo


Objective: To analyze the morphology of dentin after application of desensitizing agents. Materials and Methods: Ten third molars were sectioned to obtain 2mm thick dentin disks and divided into 4 groups (n = 5): G0 – cut with a diamond disk, G1 – Colgate® Sensitive Pro-relief™ toothpaste; G2 – Du­raflur® Fluoride varnish; G3 – biosilicate aqueous solution (Biosilicato®). After storage in dehydrated silica-gel (37°C/24h), the samples were placed on aluminum supports, coated with gold-palladium and observed under a scanning electron microscope. Post-treatment photomicrographs were obtained of the dentin. Results: In the G1 group the smear layer was observed; in the G2 and G4 groups, both the desensitizing agents and the smear layer and in the G3 group, a film of varnish. Conclusions: Different morphologies of dentin were observed after the proposed treatments for dentin hypersensitivity. 


Palavras-chave


Dental Scaling; Dentin sensitivity; Desensitizing agents; Scanning electron microscopy

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DOI: http://dx.doi.org/10.18256/2238-510X/j.oralinvestigations.v4n1p33-38

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Journal of Oral Investigations - JOI (ISSN 2238-510X)
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