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Effect of pH cycling on elemental and ultra-morphologic changes of enamel surface after using bleaching agents with and without fluoride versus sound enamel surface : In vitro study / Raneen Ahmed Abou Elgheit Gohar ; Supervised Omaima Mohamed Safwat , Shereen Hafez Ibrahim

By: Contributor(s): Material type: TextTextLanguage: English Publication details: Cairo : Raneen Ahmed Abouelgheit Gohar , 2017Description: 62 P. ; charts , facsimiles , photographs ; 25cmOther title:
  • تأثير دورة الحامض على التحليل العنصرى والمورفولوجى لمينا الاسنان بعداستخدام مواد التبييض مع الفلورايد و دونه مقابل سطح المينا السليم: دراسة معملية [Added title page title]
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Dissertation note: Thesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Operative Dentistry Summary: Elemental and ultramorphological analysis were done for all specimens in all groups and subgroups for sound unbleached enamel, after bleaching procedure (under manufacturer instructions) and after pH cycle. Quantitative energy dispersive x-ray spectroscopy elemental analysis was performed on the enamel surface to determine the elemental levels (%) of calcium (Ca), phosphorus (P). The calcium (Ca) and phosphorus (P) contents were evaluated in weight percent (wt. %) and the mean Ca/P ratios were calculated. The ultra-morphological analysis was done using the Environmental Scanning Electron Microscope. One image was obtained from the center of each enamel surface specimen with magnification of 4000X. Data were collected, tabulated and statistically analyzed. Results: Quantitative energy dispersive x-ray spectroscopy elemental analysis showed a statistical significant difference among the three groups (control, bleaching without fluoride and bleaching with fluoride) in Ca wt % and P wt % while it showed no significant difference among three groups after performing pH cycle. However Ca/P ration showed no significant difference among the three groups but showed a significant difference after performing pH cycle
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Thesis Thesis قاعة الرسائل الجامعية - الدور الاول المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.09.03.M.Sc.2017.Ra.E (Browse shelf(Opens below)) Not for loan 01010110077009000
CD - Rom CD - Rom مخـــزن الرســائل الجـــامعية - البدروم المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.09.03.M.Sc.2017.Ra.E (Browse shelf(Opens below)) 77009.CD Not for loan 01020110077009000
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Cai01.09.03.M.Sc.2017.Ra.C Colour change of nanohybrid and nanofilled composites with or without bleaching after immersion in coffee solutions : An in vitro study / Cai01.09.03.M.Sc.2017.Ra.C Colour change of nanohybrid and nanofilled composites with or without bleaching after immersion in coffee solutions : An in vitro study / Cai01.09.03.M.Sc.2017.Ra.E Effect of pH cycling on elemental and ultra-morphologic changes of enamel surface after using bleaching agents with and without fluoride versus sound enamel surface : In vitro study / Cai01.09.03.M.Sc.2017.Ra.E Effect of pH cycling on elemental and ultra-morphologic changes of enamel surface after using bleaching agents with and without fluoride versus sound enamel surface : In vitro study / Cai01.09.03.M.Sc.2017.Ra.M Micro-shear bond strength of bulk-filled repaired composite after surface treatment using diamond bur, etchant and their combination with the adhesive versus no surface treatment at different time intervals / Cai01.09.03.M.Sc.2017.Ra.M Micro-shear bond strength of bulk-filled repaired composite after surface treatment using diamond bur, etchant and their combination with the adhesive versus no surface treatment at different time intervals / Cai01.09.03.M.Sc.2017.Sa.M Micro-leakage of Indirect-Nano hybrid resin composite inlay restoration fabricated using flexible die versus stone die after 24 hours and 3 months : An in-vitro study /

Thesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Operative Dentistry

Elemental and ultramorphological analysis were done for all specimens in all groups and subgroups for sound unbleached enamel, after bleaching procedure (under manufacturer instructions) and after pH cycle. Quantitative energy dispersive x-ray spectroscopy elemental analysis was performed on the enamel surface to determine the elemental levels (%) of calcium (Ca), phosphorus (P). The calcium (Ca) and phosphorus (P) contents were evaluated in weight percent (wt. %) and the mean Ca/P ratios were calculated. The ultra-morphological analysis was done using the Environmental Scanning Electron Microscope. One image was obtained from the center of each enamel surface specimen with magnification of 4000X. Data were collected, tabulated and statistically analyzed. Results: Quantitative energy dispersive x-ray spectroscopy elemental analysis showed a statistical significant difference among the three groups (control, bleaching without fluoride and bleaching with fluoride) in Ca wt % and P wt % while it showed no significant difference among three groups after performing pH cycle. However Ca/P ration showed no significant difference among the three groups but showed a significant difference after performing pH cycle

Issued also as CD

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