Fig 1.
The flow chart of the experiment.
Fig 2.
The schematic diagram of the subpressure infiltration technique.
Fig 3.
Representative 3-D images of sintered zirconia in group P and S.
Fig 4.
Representative SEM microphotographs of all groups (5000 ×).
Fig 5.
Shear bond strength of all groups.
Different letters indicate a significant difference (P < 0.05).
Table 1.
Test of Two-way ANOVA.
Table 2.
Distribution (%) of fracture modes.
Fig 6.
Representative fracture modes of all groups (500 ×).