Fig. 2From: HF etching of CAD/CAM materials: influence of HF concentration and etching time on shear bond strengthPooled shear bond strength means for the cements RUN, VAS, PV5 and VAF on all restorative materials using different etching times (0 s, 5 s, 15 s, 30s, 60s) of both HF 5% and HF 9% (n = 80 per measuring point)Back to article page