Wear performance of bovine tooth enamel against translucent tetragonal zirconia polycrystals after different surface treatments

Abstract

The wear performances of bovine tooth enamel (BTE) against translucent tetragonal zirconia polycrystals (TZP) compared to that of feldspar porcelain and the influence of surface treatments of translucent TZP were investigated by the two-body wear test. Translucent TZP and feldspar porcelain were used as hemisphere abrader specimens with a radius of curvature of 5 mm; flat BTE surfaces were used as substrate specimens. The cross-sectional area of the worn surfaces of the substrates and the wear volume of the antagonist abraders were measured. Surface roughness, hardness and coefficient of friction as well as SEM observations and EPMA analyses were also performed to investigate the underlying mechanism of wear. The results suggested that BTE is less susceptible to wear when translucent TZP is used as the antagonist in contrast to the use of feldspar porcelain, and that surface treatment of the TZP abraders significantly influenced the wear of BTE substrates.

Translucency and flexural strength of monolithic translucent zirconia and porcelain-layered zirconia

“…Though this will probably increase the chipping risk of the veneering porcelain, the use of monolithic TZP will solve the chipping problem, and the use of monolithic translucent TZP will also improve the appearance. In addition, smooth-polished TZP has been reported to cause less wear on the antagonist enamel, making it more clinically useful 24,34) . Furthermore, the fact that the flexural strength of all the monolithic TZP showed approximately 1,000 MPa indicate no requires for drastic increase in thickness compared with conventional crown restorations, and it may become a clinical benchmark for decreasing the amount of tooth to be removed.…”

“…Finally, both sides of the disks were polished with a diamond wheel (#DIA140, Opaque TZ-3YB-E TZ3YB Table 3 Sankyo Diamond, Kanagawa, Japan) using a profile grinder (PGX2000S, Waida, Gifu, Japan). The method of surface preparation was determined according to the previous report that was resembled to final polishing in the clinical situation 24) . Finally, the surface roughness (Ra) was 0.35±0.06 μm.…”

<i>In vitro</i> wear behavior of restorative resin composites against bovine enamel

“…For ceramic restorations, in-vitro tests indicated that less wear occurs on ceramic materials compared to metals and resin-based composite materials, however significant wear occurs on antagonist teeth 8) . In addition, the surface roughness and fabrication method affect the wear of antagonist teeth for ceramic materials such as porcelain and zirconia [8][9][10] . The wear of antagonist teeth for resin-based composite is significantly influenced by filler size and shape [11][12][13] .…”

Effect of Physicochemical Surface Modifications on Bovine Serum Albumin Adsorption to Tetragonal Zirconia Polycrystal <i>in vitro</i> Through the change of the Zeta Potential

“…In addition, tooth enamel is less susceptible to wear against polished TZP than to porcelain 16 . Hot isostatic pressing HIP under high pressure in an inert atmosphere enables achievement of a very high density, enhancing the reliability of the ceramics.…”