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Type: Artigo de periódico
Title: Effects of a combined application of potassium oxalate Gel/Adhesive agent on dentin permeability in vitro
Author: Silva, SMDE
Marquezini, L
Manso, AP
Garcia, FP
Carrilho, MRD
Pashley, DH
Tay, FR
Carvalho, RM
Abstract: Purpose: To test the effects of sequential application of potassium oxalate gel/adhesive agent on in vitro dentin permeability. Materials and Methods: Full crown preparations were made in extracted human molars to expose deep coronal dentin. The roots and pulp were removed and the resulting crown segments were connected to a special device (Flodec) to permit the measurement of the permeability of the specimens before and after treatments. Minimum and maximum permeability were recorded after smear layer and phosphoric acid treatment. A new smear layer was created and the permeability measured after the crowns were bonded with Single Bond (3M ESPE), One-Up Bond F (Tokuyama), and AdheSE (Ivoclar Vivadent), either according to manufacturer's instructions or after treating the acid-etched dentin with a 3 wt% potassium oxalate gel. The results were expressed as a percentage of maximum permeability values. Impressions and epoxy resin replicas from the crown segments were produced for SEM examination. Results: None of the adhesives were able to eliminate the fluid flow through dentin. Two-way ANOVA revealed that the application of potassium oxalate prior to the bonding procedures was the most effective technique in reducing the dentin permeability (p < 0.05), regardless of the adhesive used. SEM micrographs showed that transudation of dentinal fluid could be identified on the surfaces of all replicas. Conclusion: The use of potassium oxalate gel was effective in reducing the permeability of bonded dentin.
Subject: dentin bonding
dentin permeability
oxalate treatment
Country: EUA
Editor: Quintessence Publishing Co Inc
Citation: Journal Of Adhesive Dentistry. Quintessence Publishing Co Inc, v. 9, n. 6, n. 505, n. 512, 2007.
Rights: aberto
Date Issue: 2007
Appears in Collections:Unicamp - Artigos e Outros Documentos

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