المؤلفون: S Nikazar S Nikazar, Nikzinat E, Sepahi A, Rashedi R, Saati M, Najafi M

المصدر: Journal of Petrochemical Engineering. 2

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::da7496e0788aacd5a248b5318902ac0fTest
https://doi.org/10.36959/901/250Test

المؤلفون: Morteza Ghojazadeh, S Nikazar, Soodabeh Kimyai, Elmira Jafari Navimipour

المصدر: Operative Dentistry. 37:87-92

مصطلحات موضوعية: Dental Stress Analysis, Toothbrushing, Molar, Saliva, Time Factors, business.product_category, Dentistry, Carbamide Peroxide, Indentation hardness, Oral hygiene, stomatognathic system, Hardness, Tooth Bleaching, medicine, Humans, Urea, Dental Enamel, Tooth Bleaching Agents, General Dentistry, Toothpaste, Enamel paint, business.industry, Chemistry, Temperature, Saliva, Artificial, Tooth enamel, Peroxides, stomatognathic diseases, medicine.anatomical_structure, visual_art, visual_art.visual_art_medium, sense organs, Carbamide peroxide, business, Toothpastes

الوصف: Changes in enamel surface microhardness as a result of bleaching with carbamide peroxide in various in vitro conditions have been reported. The present study evaluated the effect of oral hygiene procedures on enamel microhardness at three time intervals following bleaching with 15% carbamide peroxide. Although this was an in vitro study, the purpose was to address whether or not a patient's toothbrushing following at-home bleaching might affect surface changes in tooth enamel. Eighty enamel slabs were prepared from impacted human third molars that had been extracted surgically. Subsequent to placing the specimens in acrylic resin, their surfaces were smoothed, and they were randomly divided into four equal groups. The specimens were initially evaluated for microhardness by Vickers test. The bleaching procedure was carried out for 21 days for 6 hours daily. In each group, the surfaces of specimens were brushed with toothpaste immediately, 1 hour, and 2 hours after bleaching except for the control group. The specimens were stored in artificial saliva. Enamel microhardness was again measured at the end of the bleaching period. Then the differences in enamel microhardness between the two periods were calculated. Data were analyzed with a nonparametric Kruskal-Wallis test at a significance level of p

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b75127c080909bad881b280582ea311fTest
https://doi.org/10.2341/11-030-lTest