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The effect of combining laser and nanohydroxy-apatite on the surface properties of enamel with initial defects / Dina Mohamed Wahied ; Supervised Ali Mohamed Elhosseni Saafan , Dina Hassan Moustafa , Marwa Adel Elsayed Hamed

By: Contributor(s): Material type: TextTextLanguage: English Publication details: Cairo : Dina Mohamed Wahied , 2018Description: 80 P. : charts , facsimiles ; 25cmOther title:
  • تاثير استخدام كل من الليزر والنانو - هيدروكسى ابتيت على خواص سطح المينا ذات العيوب المبدئية [Added title page title]
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  • Issued also as CD
Dissertation note: Thesis (Ph.D.) - Cairo University - Faculty of Oral and Dental Medicin - Department of Laser Applications in Oral Surgery Summary: Background: The aim of this study was to evaluate the effect of combining fractional CO₂ LASER and nanohydroxy apatite on surface microhardness and color of enamel with initial defects. Material and methods: Two types of nano hydroxyapatite (nHAP) was prepared; Pure hydroxyapatite (nHA) and Fluoro hydroxyapatite (nFHA), Sixty extracted premolar teeth without visible caries or structural defects on enamel surface were used, immersed in 10 ml of a demineralizing solution for 2 weeks to create artificial white spot lesions, they were randomly allocated into two groups; Group 1: nHA, Group 2: nFHA, each group is then subdivided into 2 subgroups (A and B) where two different in vitro remineralization procedures have been performed, the first procedure utilizes a 10{u2009}wt% nHA aqueous slurries only, the second was first exposed to irradiation from a fractional CO2 laser then (nHAP) was applied then laser was applied once again . Microhardness and color were measured using a micro-Vickers hardness tester and spectrophotometer respectively, then the surface topography was assessed using scanning electron microscope
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Item type Current library Home library Call number Copy number Status Date due Barcode
Thesis Thesis قاعة الرسائل الجامعية - الدور الاول المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.24.04.Ph.D.2018.Di.E (Browse shelf(Opens below)) Not for loan 01010110078357000
CD - Rom CD - Rom مخـــزن الرســائل الجـــامعية - البدروم المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.24.04.Ph.D.2018.Di.E (Browse shelf(Opens below)) 78357.CD Not for loan 01020110078357000

Thesis (Ph.D.) - Cairo University - Faculty of Oral and Dental Medicin - Department of Laser Applications in Oral Surgery

Background: The aim of this study was to evaluate the effect of combining fractional CO₂ LASER and nanohydroxy apatite on surface microhardness and color of enamel with initial defects. Material and methods: Two types of nano hydroxyapatite (nHAP) was prepared; Pure hydroxyapatite (nHA) and Fluoro hydroxyapatite (nFHA), Sixty extracted premolar teeth without visible caries or structural defects on enamel surface were used, immersed in 10 ml of a demineralizing solution for 2 weeks to create artificial white spot lesions, they were randomly allocated into two groups; Group 1: nHA, Group 2: nFHA, each group is then subdivided into 2 subgroups (A and B) where two different in vitro remineralization procedures have been performed, the first procedure utilizes a 10{u2009}wt% nHA aqueous slurries only, the second was first exposed to irradiation from a fractional CO2 laser then (nHAP) was applied then laser was applied once again . Microhardness and color were measured using a micro-Vickers hardness tester and spectrophotometer respectively, then the surface topography was assessed using scanning electron microscope

Issued also as CD

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