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Etching kinetics of a self-etching primer ☆

Paper ID Volume ID Publish Year Pages File Format Full-Text
13178 838 2002 8 PDF Available
Title
Etching kinetics of a self-etching primer ☆
Abstract

Self-etching primers are thought to offer significant advantages over total-etch adhesive systems. The hypothesis tested in this study was that there was no difference in etching characteristics between a self-etching primer and a phosphoric acid solution at the same pH. Etching was assessed using atomic force microscopy (AFM) evaluation of site-specific changes in the height of the peritubular and intertubular dentin as a function of exposure time.Human dentin disks (n=6/group), prepared with an acid-resistant glass reference layer, were etched with a self-etching primer and with 0.0134 m phosphoric acid (both pH≅1.94). Depth changes relative to the reference layer were measured with the AFM after each etching interval, at 15 different locations, each in the peritubular and intertubular dentin. The total demineralization depth was measured in a scanning electron microscope. Peritubular dentin etching rate was linear while it could be measured (up to 15 s) and was greater for the self-etching primer (p<0.0001). Intertubular dentin displayed a similar demineralization pattern with both acids, ultimately reaching a plateau in the majority of specimens. The self-etching primer attained a plateau after less recession than phosphoric acid (p<0.0001). Dentin demineralization appears to be affected by other factors in addition to the pH of the etchant solutions.

Keywords
Self-etching primer; AFM; Demineralization; Phosphoric acid
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Etching kinetics of a self-etching primer ☆
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 23, Issue 20, October 2002, Pages 4105–4112
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us