Hot acid _______ has been attempted to achieve microinterlocking and improve the bond between resin and Y-TZP. This includes _______ with HCl/Fe 2 Cl 3 solution at 100°C, HF acid at 100°C, and nitric acid or sulfuric acid [8 ].
문제 2 :
Difficult to convey to the atechnic reader. — _______ and Engraving.