| 摘要 |
PURPOSE:To obtain an etching agent free from adverse effect to the dental pulp and having comparable adhesive strength, by combining ethy lenediaminetetraacetic acid or its alkali metal salt with its metal complex salt and using the mixture as the etching agent suitable for the etching of dentine. CONSTITUTION:The objective etching agent for especially dentine is produced by compounding (A) ethylenediaminetetraacetic acid or its alkali metal salt (preferably an aqueous solution of 0.1-0.5mol % concentration) and (B) a metal complex salt of ethylenediaminetetraacetic acid (preferably an aqueous solution of 0.1-0.5mol % concentration) at a molar ratio of preferably 1:0.2-20. The etching agent is suitable for the etching of dental enamel. EFFECT:The rate of decalcification is low, and the damage to teeth can be minimized.
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