SEM images zirconium abutment without irradiation and after irradiation at 200μm and 500μm scale.

Note residual cement on intact abutment surface. Top left (500μm) and right (200μm) demonstrates area of zirconia abutment surface with residual cement. Bottom left (200μm) and right (500μm) demonstrate the area of zirconia abutment without residual cement. Note normal smooth surface without any noticeable damage of zirconia.