Effect of two different tooth bleaching techniques on microhardness of giomer
| Autor: | Soodabeh Kimyai, Soodabeh Behboodi, Mahmoud Bahari, Fereshteh Naser-Alavi |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
genetic structures
Post hoc Dentistry Odontología 02 engineering and technology Indentation hardness Operative Dentistry and Endodontics 03 medical and health sciences 0302 clinical medicine Statistical significance General Dentistry Chemistry business.industry Research 030206 dentistry CIENCIAS MÉDICAS [UNESCO] 021001 nanoscience & nanotechnology Ciencias de la salud Conservative treatment Distilled water UNESCO::CIENCIAS MÉDICAS Vickers hardness test Tukey's range test Carbamide peroxide 0210 nano-technology business |
| Zdroj: | Journal of Clinical and Experimental Dentistry Kimyai, Soodabeh ; Bahari, Mahmood ; Naser Alavi, Fereshteh ; Behboodi, Soodabeh. Effect of two different tooth bleaching techniques on microhardness of giomer. En: Journal of Clinical and Experimental Dentistry. 2017. Vol. 9, no. 2: 249 RODERIC. Repositorio Institucional de la Universitat de Valéncia instname |
| ISSN: | 1989-5488 |
| DOI: | 10.4317/jced.53290 |
| Popis: | Background Tooth bleaching is a safe and conservative treatment modality to improve the esthetic appearance of discolored teeth. One of the problems with the use of bleaching agents is their possible effect on surface microhardness of resin-based materials. The present study was carried out to evaluate the effect of in-office and at-home bleaching on surface microhardness of giomer. Material and Methods Seventy-five disk-shaped giomer samples (Beautifil II) were prepared and cured with a light-curing unit. The samples were randomly assigned to three groups (n=25). In group 1 (control), the samples were stored in distilled water for 14 days. The samples in groups 2 and 3 underwent a bleaching procedure with 15% carbamide peroxide (CP) (8 hours daily) and 45% CP (30 minutes daily), respectively, for 14 days. Finally, the microhardness of samples was measured with Vickers hardness tester using a 100-g force for 20 seconds. One-way ANOVA was used to compare the mean microhardness values among the study groups, followed by post hoc Tukey test for two-by-two comparison of the groups. Statistical significance was set at P |
| Databáze: | OpenAIRE |
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