Z-Bond Brush-On Zirconia and Multi-Surface Primer, 5 mL Bottle. Single Bottle Primer for zirconia and alumina ceramics used prior to dental filling materials for direct restoration (repair) and cements for indirect restoration. While primarily for zirconia and alumina, the product also provides improved adhesion when used to prepare precious and non-precious metals. Z-Bond is contraindicated on lithium disilicates where silanes perform better.