| http://www.w3.org/ns/prov#value | - Primers containing phosphoric acid monomer as Metal/Zirconia Primer (Ivoclar-Viva- dent) and AZ Primer (Shofu) are also considered alternative to promote the adhesion to oxide ceramics such as zirconia and alumina, because they are claimed to achieve chemical bond to the oxidic ceramic surface.91,97 Differences in chemical composition of the primers and their bonding mechanisms require adequate co
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