Translucency of zirconia-based pressable ceramics with different core and veneer thicknesses

The Journal of Prosthetic Dentistry
Il-Do JeongWoong-Chul Kim

Abstract

Little information is available on the translucency of zirconia-based pressable ceramic restorations with a pressed ceramic veneer and zirconia core in various thickness combinations. The purpose of this in vitro study was to assess the translucency of 3 types of zirconia-based pressable ceramics for different core-veneer thickness combinations. A bilayered ceramic specimen was prepared with a pressable ceramic (IPS e.max Zirpress, Initial IQ, Rosetta UltraPress) veneer over a zirconia core (Zenostar Zr). Three groups of specimens (n=7) were formed with the following core+veneer thicknesses: 1 +0.5 mm, 0.7 +0.8 mm, and 0.5 +1 mm. To obtain consistent thickness and high translucency, all specimens were subjected to surface grinding with a grinding machine. To eliminate the effect of differences in roughness on the translucency, the surface roughness of the ground specimens was measured with a scanning profiler, and the consistency of these measured values was verified through statistical analysis. The luminous transmittance of the specimens was measured with a spectrophotometer. The effects of the pressable ceramic type and core-veneer thickness combination on transmittance were assessed using a 2-way ANOVA (α=.05). The consiste...Continue Reading

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Nov 12, 2019·Journal of Esthetic and Restorative Dentistry : Official Publication of the American Academy of Esthetic Dentistry ... [et Al.]·Sandro B BitencourtAldiéris A Pesqueira
Jan 10, 2018·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Farhad Tabatabaian
Sep 4, 2020·The Journal of Advanced Prosthodontics·Kyung-Ho KoYoon-Hyuk Huh
Jul 22, 2018·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Farhad TabatabaianMahshid Namdari
Mar 9, 2019·The Journal of Advanced Prosthodontics·Sung-Joon KimSe Hoon Kahm
Dec 29, 2020·Dental Materials Journal·Hui Xia, Fang Xiong

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