Fig. 6
From: Quantitative analysis on the wear of monolithic zirconia crowns on antagonist teeth
The SEM photographs of the monolithic zirconia crown on the antagonist tooth wear scars: a the wear surface indicated by the arrow 1 in (4d), the strip-shaped fine furrows are arranged in parallel, and some small exfoliative pits were scattered; b the wearing surface of arrow 2 in (4d), with obvious stripe wear mark (arrow showed); c the wear pit indicated by the arrow 3 in (4h). The stripe wear mark on the surface of the pit is clearly visible, with scattered little exfoliated pits on the surface and the edge of the pit; d the wearing surface of arrow 2 in (5h). Several small dotted and striped exfoliated pits are observed on the surface