The effect of firing times on the chroma of tetragonal zirconia polycrystal by adding rare-earth oxides / 华西口腔医学杂志
West China Journal of Stomatology
;
(6): 484-487, 2010.
Article
in Chinese
| WPRIM
| ID: wpr-350304
ABSTRACT
<p><b>OBJECTIVE</b>The aim of this study is to evaluate whether the firing times affect the chroma of zirconia by adding rare-earth oxides.</p><p><b>METHODS</b>Six kinds (S1, S2, S3, S4, S5, S6) of tooth-like yttria stabilized tetragonal zirconia polycrystal (Y-TZP) were available by introducing internal colorating technology, the color were gauged with ShadeEye NCC chromatometry instrument, and one-way ANOVA was used to analysis the color of each kind of tooth-like zirconia after 1, 2, 3, 4, 5 times firing individually.</p><p><b>RESULTS</b>After 1, 2, 3, 4, 5 times firing respectively, the chromatic aberration ranged between 0.10-1.47 merely. The luminosity of three kinds (S1, S2, S6) of tooth-like zirconia were decreased (P < 0.05), the luminosity of the other three kinds (S3, S4, S5) of tooth-like zirconia were not obviously changed (P > 0.05), as for the hue and chroma, no significant differences were found (P > 0.05).</p><p><b>CONCLUSION</b>There are no significant influence on the color of tooth-like Y-TZP after 1, 2, 3, 4, 5 times firing respectively, the chroma of yttria stabilized tetragonal zirconia polycrystal by adding rare-earth oxides are with high stability.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Oxides
/
Surface Properties
/
Yttrium
/
Zirconium
/
Materials Testing
/
Dental Porcelain
/
Dental Stress Analysis
Language:
Chinese
Journal:
West China Journal of Stomatology
Year:
2010
Type:
Article
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