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Dental Research Journal، جلد ۱۲، شماره ۱، صفحات ۰-۰
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عنوان انگلیسی Bleaching effect of ozone on pigmented teeth
چکیده انگلیسی مقاله Background: There have been numerous researches on ozone application in dentistry; yet the data regarding its whitening effect is very limited. The present study compares the bleaching effect of ozone with offi ce bleaching. Materials and Methods: In this experimental study, 15 maxillary premolar teeth were selected and sectioned mesio-distally and bucco-lingually. The sections were then placed in tea for 1 week according to the Sulieman method and were divided into three groups each comprised of 15 sections. The samples were bleached as followed; Group I: Bleached with 35% hydrogen peroxide in three intervals of 8 min each, Group II: Underwent ozone treatment using Ozotop unite for 4 min and Group III: Bleached with a combination of both methods. The color indices of the samples, i.e., (a) green-red pigment, (b) blue-yellow pigment, (L) brightness, (ΔE) overall color change, were evaluated pre- and post-bleaching utilizing a digital camera, Photoshop software and CIE lab index. The color changes of specimens then were calculated and analyzed through randomized analysis of variance and Tukey tests. P < 0.001 was considered to be signifi cant. Results: The color change (ΔE) in Group II was signifi cantly lower than those in the two other groups ( P < 0.001). There was no signifi cant difference between the color change of Groups I and III ( P = 0.639). In addition, the results of L, a and b brought forth a similar pattern to the fi ndings obtained from ΔE. Conclusion: The hydrogen peroxide gel has a more powerful whitening effect than ozone; in addition, ozone has no synergistic effect when is used simultaneously with hydrogen peroxide. Key Words: Hydrogen peroxide, ozone, tooth bleaching
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نویسندگان مقاله vagharedin اخوان زنجانی | vagharedin akhavan zanjani


امیر قاسمی | amir ghasemi


حسن تراب زاده | hassan torabzadeh


محبوبه جمالی | mahbobeh jamali


سارا رزم آور | sara razmavar


نشانی اینترنتی http://drj.mui.ac.ir/index.php/drj/article/view/1658
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زبان مقاله منتشر شده en
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نوع مقاله منتشر شده Original Article(s)
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