Joined: 14 May 2005
|Posted: Mon Sep 15, 2008 12:19 pm Post subject: Most self-etch materials do not etch enamel well for sealant
|Compend Contin Educ Dent. 2008 Apr;29(3):186-92.Links
Length of resin tags in pit-and-fissure sealants: all-in-one self-etching adhesive vs phosphoric acid etching.dos Santos KT, Sundfeld RH, Garbin CA, de Alexandre RS, Sundefeld ML, Ceolim BN.
Department of Community Dentistry, Arašatuba Dental School, Universidade Estadual Paulista, Arašatuba, Brazil.
PURPOSE: To investigate the penetration (tags) of adhesive materials into enamel etched with phosphoric acid or treated with a self-etching adhesive, before application of a pit-and-fissure sealant. MATERIALS AND METHODS: The sample comprised six study groups with six specimens each. Before pit-and-fissure sealing with the materials Clinpro SealantTM (Groups I and II), Vitro Seal ALPHA (Groups III and IV) and Fuji II LC (Groups V and VI), the teeth in Groups I, III, and V were etched with 35% phosphoric acid for 30 seconds. Teeth in Groups II, IV, and VI received application of the self-etching adhesive Adper Prompt L-Pop. The treated teeth were sectioned buccolingually, ground to 100-microm thickness, decalcified, and analyzed by conventional light microscopy at 400x magnification. RESULTS: The teeth etched with phosphoric acid exhibited significantly greater penetration than specimens treated with self-etching adhesive. CLINICAL SIGNIFICANCE: When compared with enamel treated with a self-etching adhesive, the penetration (tags) of adhesive materials into enamel was greater when applied on enamel etched with phosphoric acid.
Of course, both Simplicity and Surpass have been shown to etch even uncut enamel as well as H3PO4.
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