Table 2.

Different protocols of intaglio surface treatment according to type of ceramic, acidic concentration, and silane conditioning.

Ceramic Type	Conditioning	Rinsing Time	Silanization Time
Feldspathic [3]	9.5% HF for 1 to 2.5 min	1 min	1 to 5 min depending on silane system, in one or 2 bottles
Leucite-reinforced [3]	9.5% HF for 60 s
Lithium disilicate-reinforced [3]	9.5% HF for 20 s