Cerium Oxide Polishes Lithium Disilicate Glass Ceramic via a Chemical-Mechanical Process.

Objective:  The aim of the present study was to evaluate the chemical-mechanical polishing (CMP) effect of cerium oxide (ceria [CeO]) as an abrasive to polish lithium disilicate glass ceramic.

Materials And Methods:  For the polishing experiment, 22 lithium disilicate glass ceramic samples were prepared, polished with sandpaper using a polishing machine, their surface roughness (Ra) was measured using a profilometer, and they were randomly divided into two groups ( = 10). The samples were polished for 30 seconds with ceria paste with different ratios of deionized water:ceria by weight: 1:0.

A novel alumina-ceria polishing paste demonstrated superior polishing of lithium disilicate compared with diamond paste.

The aim of this study was to develop a polishing paste containing ceria to polish lithium disilicate. The samples were prepared, polished with sandpaper using a polishing-machine, the surface roughness (Ra) was measured using a profilometer and randomly divided into 7 groups (n=10). The control group was polished with diamond paste (D).

Comparison of the surface roughness of feldspathic porcelain polished with a novel alumina-zirconia paste or diamond paste.

This study compared the surface roughness of feldspathic porcelain polished with newly developed alumina-zirconia pastes or diamond paste. Porcelain discs were prepared and polished with sandpaper using a polishing-machine. The surface roughness (Ra) of each sample was measured using a profilometer.