الفهرس | Only 14 pages are availabe for public view |
Abstract Summary • The aim of the present study was directed to evaluate the effect of chlorhexidine and sodium fluoride on corrosion behavior and surface topography of different orthodontic archwires. • Sixty orthodontic archwires were selected from the outpatient clinic of the Department of orthodontics, Faculty of Dentistry, Suez Canal University. • The selected patients divided randomly into three groups according to the randomization plan. The distributions of these groups will be as following: - group 1: (control group) (saliva group) subjects who conducted regular oral hygiene. - group 2: (fluoride group) subjects who used fluoride for intensive prophylaxis. - group 3: (chlorhexidine group) subjects who used chlorhexidine. • Scanning electron microscope (SEM) examination of representative samples of all archwires was conducted using a SEM-QUANTA FEG-250, and highresolution SEM images were analyzed using Image J 1.53t software. • In this study the results proved that the corrosion at NiTi archwires higher than SS archwires; anteriorly was more than posteriorly and differences between these two parts for both archwires were statistically non-significant at Control and CHX groups but highly significant at NaF group. • In this study, It was found that there was a statistically significant difference in corrosion behavior between the control and the two other groups at SS and NiTi archwires, however there was statistically non-significant difference between archwires at NaF and CHX groups, but there was statistically highly significant difference between NaF and control groups. |