Medizinische Universität Graz Austria/Österreich - Forschungsportal - Medical University of Graz

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SHR Neuro Krebs Kardio Lipid Stoffw Microb

Wendl, B; Muchitsch, P; Pichelmayer, M; Droschl, H; Lankmayr, E; Maier, E.
In vitro release of phosphoric acid ester from self-etching primer.
J DENT RES. 2009; 88(5): 439-442. Doi: 10.1177/0022034509336646
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Führende Autor*innen der Med Uni Graz: Wendl Brigitte
Co-Autor*innen der Med Uni Graz: Droschl Helmut; Muchitsch Alfred Peter; Pichelmayer Margit
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Abstract:: Self-etching primers have simplified the process of direct bonding of dental resins, by eliminating the rinsing step after etching in conventional bonding, for example. Although it is generally assumed that all of the applied self-etching primer is incorporated into the resin, the possibility that a substantial amount remains free and extractable into a person's saliva has not been investigated. The aim of the present study was to examine this issue by bonding brackets to extracted teeth with self-etching primers under controlled conditions and determining the proportion of the applied phosphoric acid ester that is subsequently extractable by high-performance liquid chromatography. Approximately half of the applied acid ester was extractable and thus not integrated into the polymeric network following standard light curing. This was reduced to 40% when the curing time was doubled. Acid ester leaching was a rapid process that was essentially completed within an hour.
Find related publications in this database (using NLM MeSH Indexing): Acid Etching, Dental - methods; Chromatography, High Pressure Liquid -; Curing Lights, Dental -; Dental Bonding -; Dentin-Bonding Agents - chemistry; Humans -; Magnetic Resonance Spectroscopy -; Materials Testing -; Orthodontic Brackets -; Phosphoric Acid Esters - chemistry; Polymers - chemistry; Resin Cements - chemistry; Sodium Chloride -; Time Factors -
Find related publications in this database (Keywords): Self-etching primer; phosphoric acid ester; bonding; HPLC (high-performance liquid chromatography)