Does the application of surface treatments in different sintering stages affect flexural strength and optical properties of zirconia?

Objective To investigate the influence of surface treatments conducted in presintering and postsintering stages on flexural strength and optical properties of zirconia. Materials and methods Specimens were milled from partially sintered zirconia blocks in different geometries and divided into three...

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Bibliographic Details
Published in:Journal of esthetic and restorative dentistry 2020-01, Vol.32 (1), p.81-90
Main Authors: Kurtulmus‐Yilmaz, Sevcan, Önöral, Özay, Aktore, Huseyin, Ozan, Oguz
Format: Article
Language:English
Subjects:
Abrasion
Dentistry
flexural strength
laser irradiation
monolithic zirconia
Optical properties
Sintering
surface treatment
Zirconia
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Summary:Objective To investigate the influence of surface treatments conducted in presintering and postsintering stages on flexural strength and optical properties of zirconia. Materials and methods Specimens were milled from partially sintered zirconia blocks in different geometries and divided into three main groups as presintered, postsintered, and control groups. Test groups were further divided into three subgroups (n = 10) according to the surface treatments conducted (grinding, Er,Cr:YSGG laser irradiation, air‐borne particle abrasion [APA]). Four‐point flexural strength (σ) test and Weibull analysis were conducted. Color differences (ΔE00) and translucency parameter (TPab) were calculated with a spectrophotometer. Surfaces of specimens were scrutinized under FESEM. Data were statistically analyzed. Results Postsintered groups exhibited higher σ values (P 
ISSN:1496-4155
1708-8240
DOI:10.1111/jerd.12552