We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Fracture strength of porcelain veneer on surface-treated zirconia.
- Authors
Hiraku ONUMA; Masanao INOKOSHI; Kaiqi XU; Shunsuke MINAKUCHI
- Abstract
In this study, we investigated the effects of surface treatment on the fracture strength of porcelain-veneered zirconia. Highly translucent 4 mol% yttria-stabilized zirconia disks (KATANA HT, Kuraray Noritake Dental) were divided into three surface-treatment groups: 1) as-sintered, 2) alumina sandblasted, and 3) ground. Crystallographic and surface-roughness analyses were conducted for each group. Veneering ceramics (Cerabien ZR, Kuraray Noritake Dental) were applied to the zirconia surfaces. The fracture strengths of the porcelain-veneered zirconia disks were measured using biaxial flexural-strength tests. Crystallographic analysis revealed that grinding and sandblasting increased the fractions of the monoclinic and rhombohedral zirconia phases. The ground specimens had a higher surface roughness than the sandblasted specimens. Weibull analysis showed no significant differences in biaxial flexural strength among the three groups. The results suggest that these surface treatments do not affect the fracture strength of porcelainveneered zirconia.
- Subjects
FRACTURE strength; ZIRCONIUM oxide; SURFACE preparation; FLEXURAL strength; PORCELAIN
- Publication
Dental Materials Journal, 2024, Vol 43, Issue 2, p263
- ISSN
0287-4547
- Publication type
Article
- DOI
10.4012/dmj.2023-139