Table 1.
Characteristics of included studies.
| Author | Publication year | Generation of Y-TZP tested | Material tested | Aging protocol | Color measurements | Translucency measurements |
|---|---|---|---|---|---|---|
| Fathy et al. | 2015 | 2nd generation | 3Y-TZP: Prettau (Zirkonzahn GmbH) | 134°C and 0.2 MPa for 15 h | — | TP |
| Nakamura et al. | 2016 | 2nd generation | 3Y-TZP: Incoris TZi (Dentsply Sirona) | 134°C and 0.2 MPa for 5, 10, 20, and 40 h | — | TP and CR |
| Alghazzawi TF | 2017 | 2nd and 3rd generations | 3Y-TZP: Zenostar T (Ivoclar Vivadent), Zirlux (Henry Schein), Katana HT (Kuraray Noritake Dental), Bruxzir (Glidewell Laboratories), DD-BioZX [2] (Dental Direkt GmbH), NexxZr (Sagemax Bioceramics) 5Y-TZP: DD-cubeX2 (Dental Direkt GmbH) |
134°C and 0.2 MPa for 20, 40, 60, 80, and 100 h | CIE L∗a∗b∗ coordinates and color difference (ΔE) | TP and CR |
| Putra et al. | 2017 | 2nd and 3rd generations | 3Y-TZP: Lava Plus (3M ESPE) 5Y-TZP: Bruxzir Anterior (Glidewell Laboratories), Katana UT (Kuraray Noritake Dental) |
134°C and 0.2 MPa for 5, 50, and 100 h | — | Percentage of total transmittance of light (Tt%) |
| Rafeal et al. | 2018 | 2nd generation | 3Y-TZP: Prettau (Zirkonzahn GmbH) | 134°C and 0.3 MPa for 1 h | Color differences (ΔE00) | — |
| Kim and Kim | 2019 | 2nd generation | 3Y-TZP: Katana ML (Kuraray Noritake Dental) | 134°C and 0.2 MPa for 1, 3, 5, and 10 h | CIE L∗a∗b∗ coordinates and color differences (ΔE00) | TP |
| Walczak et al. | 2019 | 2nd generation | 3Y-TZP: Cercon ht (Degudent GmbH), Bruxzir (Glidewell Laboratories), Zenostar T (Ivoclar Vivadent), Lava Plus (3M ESPE) | 134°C and 0.2 MPa for 5 h | — | TP and CR |
| Kou et al. | 2019 | 3rd generation | 5Y-TZP: DD-cubeX2 (Dental Direkt GmbH), Bruxzir Anterior (Glidewell Laboratories) | 134°C and 0.2 MPa for 10 h | — | Visible transmittance |
| Shen et al. | 2020 | 2nd and 3rd generations | 3Y-TZP: Lava Plus (3M ESPE) 5Y-TZP: Katana UTML (Kuraray Noritake Dental) |
134°C and 0.2 MPa for 20 h | — | TP |
| Benalcazar Jalkh et al. | 2020 | 2nd generation | 3Y-TZP: Zpex (Tosoh) | 134°C and 0.2 MPa for 20 h | — | TP and CR |
| de Araújo-Júnior et al. | 2020 | 2nd generation | 3Y-TZP: Zirconn translucent (VIPI) | 134°C and 0.2 MPa for 20 h | Color difference (ΔE) | TP and CR |
| Cokic et al. | 2020 | 2nd and 3rd generations | 3Y-TZP: CEREC Zirconia medi S (Dentsply Sirona), Incoris TZi (Dentsply Sirona) 5Y-TZP: Katana STML (Kuraray Noritake Dental) |
134°C and 0.2 MPa for 60 h | — | TP and CR |
| Lopes et al. | 2020 | 2nd generation | 3Y-TZP: Zpex (Tosoh) | 134°C and 0.2 MPa for 20 h | Color difference (△E) | TP and CR |
TP: translucency parameter; CR: contrast ratio.