Effect of diffrent surface treatments on enamel discoloration after brackets debonding / Haitham Adel Mohie Eldin ; Supervised Mohamed Abdelaleem Bushnak , Dalia Mohamed Elboghdady

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Haitham Adel Mohie Eldin

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Material type: Text

TextLanguage: English Publication details: Cairo : Haitham Adel Mohie Eldin , 2013Description: 86 Leaves : charts , facsimiles ; 30cmOther title:

تأثير المعالجات السطحيه المختلفه لمينا الأسنان على تغير لونها بعد نزع رابطة السناد [Added title page title]

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Issued also as CD

Dissertation note: Thesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Orthodontics Summary: The purpose of this in - vitro study was to compare two different enamel surface treatments and their effect on enamel discoloration after brackets debonding. Human maxillary premolar teeth were selected free from any primary visual or color defects. Teeth mounted in acrylic resin blocks constructed by a special copper mold. Spectrophotometer was used to record teeth color before surface treatment. Teeth were divided into two groups, group (A) acid etched with phosphoric acid 37% for 20 seconds. Group (B) sandblasted with microetcher (cojet) with 30 um particle size then acid etched with phosphoric acid 37% for 20 seconds. Both groups were rinsed then dried. Bonding of brackets were made for both groups using bonding and composite resin left for 24 hours at 37 ̊C in distilled water. Debonding were made, surface inspected using stereomicroscope (10x). Groups further subdivided according to immersion solution (color, coffee, tea and mouth rinse) samples left in solution for 72 hours. Then AE measured using spectrophotometer. Furthermore, varnish was applied on ten samples (five from each group) before immersion in the solution. PH of each immersion solution was measured by PH meter

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Holdings
Item type	Current library	Home library	Call number	Copy number	Status	Date due	Barcode
Thesis	قاعة الرسائل الجامعية - الدور الاول	المكتبة المركزبة الجديدة - جامعة القاهرة	Cai01.09.06.M.Sc.2013.Ha.E (Browse shelf(Opens below))		Not for loan		01010110064944000
CD - Rom	مخـــزن الرســائل الجـــامعية - البدروم	المكتبة المركزبة الجديدة - جامعة القاهرة	Cai01.09.06.M.Sc.2013.Ha.E (Browse shelf(Opens below))	64944.CD	Not for loan		01020110064944000

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

The purpose of this in - vitro study was to compare two different enamel surface treatments and their effect on enamel discoloration after brackets debonding. Human maxillary premolar teeth were selected free from any primary visual or color defects. Teeth mounted in acrylic resin blocks constructed by a special copper mold. Spectrophotometer was used to record teeth color before surface treatment. Teeth were divided into two groups, group (A) acid etched with phosphoric acid 37% for 20 seconds. Group (B) sandblasted with microetcher (cojet) with 30 um particle size then acid etched with phosphoric acid 37% for 20 seconds. Both groups were rinsed then dried. Bonding of brackets were made for both groups using bonding and composite resin left for 24 hours at 37 ̊C in distilled water. Debonding were made, surface inspected using stereomicroscope (10x). Groups further subdivided according to immersion solution (color, coffee, tea and mouth rinse) samples left in solution for 72 hours. Then AE measured using spectrophotometer. Furthermore, varnish was applied on ten samples (five from each group) before immersion in the solution. PH of each immersion solution was measured by PH meter

Issued also as CD

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