The p-value between each two groups from 1.1 to 1.4 was shown in Table 2. Obviously, there is statistical significance of shear strength between Group 1.3 and Group 1.1, 1.2, and 1.4, respectively. It is safe to say that, the striations made no obvious difference to the bond strength, while humps in the surface of zirconia substrate remarkably enhanced the bond strength between zirconia substrate and veneering porcelain. Therefore, it is promising to design humps on zirconia substrate to reduce chipping of veneering porcelain.