Fig. 5
From: Retention strength of monolithic zirconia crowns cemented with different primer-cement systems
SEM photomicrographs of representative fractured specimens; a occlusal surface of the tooth with cement fragments from Group M, b zirconia surface with cement particles from Group M, c fractured surface at the interface between zirconia and cement from Group P, d tooth surface without any cement remnants from Group D, e: fractured surface at the interface between zirconia and cement from Group D, f air abraded zirconia surface with cement particles from Group D. T: tooth, Z: zirconia, F: interface between zirconia and cement