Bis-Silane is a two-part silane coupling agent offering additional shelf-life stability to ensure long lasting effective bonding to porcelain. Features & Benefits Increased Bond Strength Increases bond strengths to all porcelain and glass - ceramic restorations. Strong Bond to Lithium Disilicate Increases bond strengths to all lithium disilicate (e.max®) restorations. Versatility Can be used with all glass ceramic and porcelain substrates. Porcelain Restorations Ideal for all porcleain restorations.