| http://www.w3.org/ns/prov#value | - Among them, there has been preferably employed a so-called acidic etching-type adhesive system in which a tooth surface is treated with a strong acidic etching agent such as phosphoric acid, and thereafter a bonding material is applied thereto for adhesion. [0006] However, there are some defects in the above method of treating with the acidic etching agent, such that washing with water for suffici
|
