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Journal of Dentistry, Shiraz University of Medical Sciences، جلد ۱۶، شماره ۲، صفحات ۱۲۹-۰
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| عنوان فارسی |
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| چکیده فارسی مقاله |
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| کلیدواژه‌های فارسی مقاله |
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| عنوان انگلیسی |
The Effect of two Shading Techniques on Value of Zirconia-Based Crowns |
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| چکیده انگلیسی مقاله |
Statement of the Problem: By introducing the coloring liquids, it is claimed that it is possible to make the color of frameworks fabricated from zirconium oxide extremely close to the natural tooth color. Purpose: The purpose of this research was to evaluate the effect of two staining techniques on value changing in zirconia crowns. Materials and Method: Three groups A, B, and C, each containing ten zirconia crowns, were used. The zirconium cores samples were fabricated by a CAD/CAM device. Group A was left uncolored, Groups B was submerged for two minutes in A2 coloring liquid and Group C was stained with brush. Then all cores were sintered and the porcelain was applied by using the layering technique. Ultimately, the crowns color was determined using a spectrophotometer. Their color changing (∆E) and value changing (∆L) in relation to A2 color were also assessed. The data were analyzed with one-sample t-test, post-hoc Tukey, and one-way ANOVA tests with significant level set at 0.05. Results: The mean value in all groups was higher than the value obtained from A2 color samples ( p = 0.001). The highest mean value was 78.31±1.22 belonging to group C (staining with brush) and the lowest mean value was 76.99±0.65 belonging to group B (submerging). The results of post-hoc Tukey regarding both ∆E and ∆L variables showed a significant difference between groups A (uncolored) and C (staining with brush) with P ∆E =0.006 and P ∆L =0.039, respectively. A significant difference between group B (submerging technique) and C (staining with brush) were shown when these two variables were compared (P ∆E =0.001, P ∆L =0.015). Conclusion: Due to the higher value increase in surface staining (brush), it is recommended to use the submerging technique for staining zirconia cores. |
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| کلیدواژه‌های انگلیسی مقاله |
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| نویسندگان مقاله |
احمد حسن آهنگری | ahmad hassan ahangari
dept. of prosthodontics, school of dentistry, shiraz university of medical sciences, shiraz, iran.
سازمان اصلی تایید شده: دانشگاه علوم پزشکی شیراز (Shiraz university of medical sciences)
کیانوش ترابی اردکانی | kianoosh torabi ardakani
dept. of prosthodontics, school of dentistry, shiraz university of medical sciences, shiraz, iran.
سازمان اصلی تایید شده: دانشگاه علوم پزشکی شیراز (Shiraz university of medical sciences)
فریده مهدوی | farideh mahdavi
postgraduate student in prosthodontics, dept. of prosthodontics, school of dentistry, shiraz university of medical sciences, shiraz, iran.
سازمان اصلی تایید شده: دانشگاه علوم پزشکی شیراز (Shiraz university of medical sciences)
مهشید ترابی اردکانی | mahshid torabi ardakani
private dentist, shiraz, iran.
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| نشانی اینترنتی |
http://dentjods.sums.ac.ir/index.php/JDSUMS/article/view/672 |
| فایل مقاله |
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| کد مقاله (doi) |
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| زبان مقاله منتشر شده |
en |
| موضوعات مقاله منتشر شده |
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| نوع مقاله منتشر شده |
Original Article |
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