Effect of gamma irradiation on enamel micro-hardness and selected properties of direct esthetic restorations in laser treated cavities / Engy Fahmy Ismaiel Fekry Abaza ; Supervised Ahmed Abbas Zaky , Haytham Samir Abdelkadr Moharram , Asmaa Ali Mohamed Yaseen

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Engy Fahmy Ismaiel Fekry Abaza

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TextLanguage: English Publication details: Cairo : Engy Fahmy Ismaiel Fekry Abaza , 2019Description: 191 P. : charts , facsimiles ; 25cmOther title:

تأثير اشعة جاما على الصلابة الدقيقة لمينا الاسنان وبعض خواص مواد حشو الاسنان التجميلى فى تجاويف الاسنان المعالجة بالليزر [Added title page title]

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Dissertation note: Thesis (Ph.D.) - Cairo University - National Institute of Laser Enhanced Sciences - Department of Laser Applications in Medical and Biological Summary: This study was performed to evaluate the effect of gamma radiation on the microshear bond strength and nanoleakage in Er,Cr: YSGG laser prepared cavities as well as microhardness of two different restorative materials (Nanocomposite and Nano-glass ionomer) and enamel in two different storage periods (24 hrs and 6 months) Micro-shear bond strength test: Enamel was removed from all specimens to expose flat dentin surfaces then the flattened dentin surfaces were uniformly and perpendicularly irradiated with Er,Cr:YSGG laser.The prepared teeth were divided into two main groups according to the restorative material used. Two vinyl Tygon tubes were placed on each dentin surface where the restorative materials were packed.Each group was subdivided into two subgroups according to whether or not subjected to gamma radiation. Each subgroup was further divided into two classes according to the aging periods and stored in artificial saliva. Micro-shear bond strength assessment was performed by Instron universal testing machine

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Item type	Current library	Home library	Call number	Copy number	Status	Barcode
Thesis	قاعة الرسائل الجامعية - الدور الاول	المكتبة المركزبة الجديدة - جامعة القاهرة	Cai01.24.03.Ph.D.2019.En.E (Browse shelf(Opens below))		Not for loan	01010110080501000
CD - Rom	مخـــزن الرســائل الجـــامعية - البدروم	المكتبة المركزبة الجديدة - جامعة القاهرة	Cai01.24.03.Ph.D.2019.En.E (Browse shelf(Opens below))	80501.CD	Not for loan	01020110080501000

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Thesis (Ph.D.) - Cairo University - National Institute of Laser Enhanced Sciences - Department of Laser Applications in Medical and Biological

This study was performed to evaluate the effect of gamma radiation on the microshear bond strength and nanoleakage in Er,Cr: YSGG laser prepared cavities as well as microhardness of two different restorative materials (Nanocomposite and Nano-glass ionomer) and enamel in two different storage periods (24 hrs and 6 months) Micro-shear bond strength test: Enamel was removed from all specimens to expose flat dentin surfaces then the flattened dentin surfaces were uniformly and perpendicularly irradiated with Er,Cr:YSGG laser.The prepared teeth were divided into two main groups according to the restorative material used. Two vinyl Tygon tubes were placed on each dentin surface where the restorative materials were packed.Each group was subdivided into two subgroups according to whether or not subjected to gamma radiation. Each subgroup was further divided into two classes according to the aging periods and stored in artificial saliva. Micro-shear bond strength assessment was performed by Instron universal testing machine

Issued also as CD

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