Cycle-dependent in vitro wear performance of dental ceramics after clinical surface treatments.

Aim: To investigate the two-body wear performance of dental ceramics after different clinical surface treatments as a function of number of wear cycles.

Material And Methods: Standardized specimens (n=72/material) were prepared from two different zirconia ceramics, a veneering porcelain, and a lithiumdisilicate glass ceramic. Specimens were progressively glazed, ground, and polished.

The effectiveness of polishing kits: influence on surface roughness of zirconia.

This study investigated the effectiveness of intraoral and technical polishing kits. Zirconia specimens were sintered, ground, and polished with 14 different two-step or three-step polishing kits. Surface roughness (Ra, Rz) after each treatment step was determined, and scanning electron micrographs were made.