total-etch
Adjective
Pertaining to adhesive systems for bonding fillings to teeth that require the application of phosphoric acid in a separate etching step .
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The total-etch system completely removes the smear layer using an acidic gel (usually phosphate acid) and demineralizes hydroxyapatite under the smear layer of the dentin.
With the classic total-etch technique, both the enamel and dentin are etched with phosphoric acid.
As illustrated in Figure 12-1, dentin etching did not gain wide acceptance until Fusayama introduced the total-etch concept in 1979.
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