Natural teeth wear opposite to glazed and polished ceramic crowns: A systematic review

Abstract

It is a major concern to select a proper ceramic with acceptable strength and esthetic and minimum
antagonist wear. Therefore, different ceramics were introduced to obtain these advantages with
various surface treatments. The aim of this study is to evaluate and report the wear behavior of
polished and glazed feldspathic and zirconia crowns in published articles up to 2020. Five electronic
databases which were used in this research were MEDLINE (via PubMed), Web of Science, Cochrane
Library, Embase, and Scopus from the starting date of databases to January 2020. The Keywords
“zirconia,” “feldspathic,” “dental ceramic,” ”enamel,” “Y‑TZP,” “wear,” “glazed,” and “polished” were
used. English articles were selected in this paper. The Preferred Reporting Items for Systematic
Reviews and Meta‑Analyses statement was used as a reporting template as much as possible. Among
the initially 133 articles, 59 duplicated articles were removed, and finally, 52 articles were screened
and among them, only 16 articles remained for full‑text regaining. The results showed that zirconia
had significantly less antagonist wear than feldspathic groups, and polishing had less enamel wear
than other types of surface treatment like glazing. Only one study showed that glazed zirconia can
have more antagonist wear than feldspathic porcelain. Monolithic zirconia had less enamel wear
than conventional zirconia and low‑fusing feldspathic porcelain showed lower antagonist wear in
comparing with other types of feldspathic porcelains.
Key Words: Dental enamel, dental porcelain, dental wear, feldspathic porcelain, In‑Ceram
zirconia, review, Y‑TZP ceramic