The present invention relates to a method for treating the bonding surfaces of dental restorations and to dental restorations. According to one aspect of the present invention, disclosed is a method for treating the bonding surfaces of dental restorations in which the bonding surface of a zirconia core on which a ceramic layer is to be placed is etched by a solution comprising a mixture of nitric acid (HNO3) and hydrofluoric acid (HF) so as to improve bonding strength when manufacturing the dental restoration consisting of the zirconia core in the lower portion and the ceramic layer in the upper portion.
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