Comparative evaluation of natural enamel wear against polished yitrium tetragonal zirconia and polished lithium disilicate - An study.

Aim: The aim of this study is to compare wear of the natural teeth against polished yttrium tetragonal zirconia and polished lithium disilicate crowns.

Study Setting And Design: Experimental type of study.

Materials And Methods: Polished yttrium tetragonal zirconia and polished lithium disilicate crowns were fabricated and given to 15 patients each (n=15).