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Emami Arjomand M, Masoumi S, Heshmat H, Nouralizadeh Z. Effects of bleaching on color stability of enamel lesions treated with resin infiltrant. jdm. 2022; 35 :1-7
URL: http://jdm.tums.ac.ir/article-1-6126-en.html
1- Assistant Professor, Department of Restorative Dentistry, School of Dentistry, Islamic Azad University of Medical Sciences, Tehran, Iran
2- Dentist, School of Dentistry, Islamic Azad University of Medical Sciences, Tehran, Iran
3- Assistant Professor, Department of Restorative Dentistry, School of Dentistry, Islamic Azad University of Medical Sciences, Tehran, Iran; Member of Dental Material Research Center, Islamic Azad University of Medical Sciences, Tehran, Iran
4- Post-Graduate Student, Department of Restorative Dentistry, School of Dentistry, Islamic Azad University of Medical Sciences, Tehran, Iran
Abstract:   (211 Views)
Background and Aims: Considering the preventive and therapeutic effects of resin infiltration (RI) and the unknown effect of bleaching on the enamel treated with this method, this in-vitro study aimed to assess the effect of bleaching on color stability of enamel lesions treated with RI.
Materials and Methods: In this in-vitro, experimental study, enamel-dentin samples measuring 5×5×3 mm were prepared on the buccal and lingual surfaces of 30 extracted humans third molars with no caries, cracks or enamel defects by a microtome. The specimens were divided into three groups of 10 specimens: 1) sound enamel (control), 2) demineralized enamel, 3) demineralized enamel plus RI. White spot lesions were artificially created by immersing the samples in hydroxyethyl cellulose demineralizing gel with a pH of 4.5 for 4 days. Next, Icon RI was applied on the samples in group 3. The baseline color of the specimens was measured using a spectrophotometer. Then, 35% hydrogen peroxide was applied on the specimens in three cycles and time interval of 10 min. After the end of the last cycle, the samples were completely washed for 1 min and then, underwent colorimetry again. Data were analyzed using one-way ANOVA.
Results: The results of this study showed that the highest level of color change (ΔE) in the demineralized group was 6.3±2.003, while the least amount of ΔE in the enamel lesion group treated with resin infiltration was 3.54±0.98 and in the control group ΔE was 4.13±1.14. Therefore, there was a significant difference between demineralized and treated by infiltratant groups (P=0.005). However, there was no significant difference between control group and treated with resin infiltration group (P=0.54).
Conclusion: Bleaching induced a less change in the color of the enamel lesions treated by resin infiltration compared with that of the demineralized teeth.
 
 
Article number: 34
Full-Text [PDF 507 kb]   (69 Downloads)    
Type of Study: Research | Subject: operative dentistry
Received: 2021/12/3 | Accepted: 2022/04/19 | Published: 2022/05/31

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