02922cam a2200337 a 4500 EG-GiCUC 20250223032156.0 190129s2018 ua ah f m 000 0 eng d EG-GiCUC eng EG-GiCUC eng Deposite M.Sc Cai01.09.03.M.Sc.2018.So.M Somayia Ramadan Mohamed Microhardness and surface roughness of demineralized enamel treated with icon resin infiltration or hydroxyapatite remineralization and their combination versus sound enamel after two weeks pH cycle : An in-vitro study / Somayia Ramadan Mohamed ; Supervised Mohamed Adel Ezzat , Maha Abdelsalam Elbaz الصلادة الدقيقة وخشونة السطح للمينا المنزوع المعادن المعالج بالراتنج المتخلل أو إعادة التمعدن بالنانوهيدروكسيباتيت و جمعهما معا مقابل المينا السليمة بعد التعرض لمختلف درجات الحموضة لمدة أسبوعين : دراسة معدنية Cairo : Somayia Ramadan Mohamed , 2018 76 P. : charts , facsimiles ; 25cm Thesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Operative Dentistry Our study aims to compare between remineralization and sealingstrategies of white spot lesion by evaluating the effect of sealing techniques using resin infiltration systemor remineralization usingnano-hydroxyapatite paste versus their combination on surface roughness and micro-hardness of initial enamel carious lesion. A total number of 276reading out of 35 sound human premolars were usedin this study, the teeth were sectioned to remove the root, then the halves were sectioned again using the same cutting disc in a bucco-lingual direction into mesial and distal halves then embedded in acrylic resin in a teflon mold with the enamel surface uncovered after that the specimens were soaked in a demineralizing solution for 72 hours to induce caries like lesion then the specimens were randomly divided into 2 main equal groups according to assessment method used as follow; first group will be subjected to micro-hardness testing and the second group were tested for surface roughness, each main group was divided into three subgroups according to the type of material tested with 23 specimens in each group after that each subgroup was assessed according pH cycling application and without pH cycling Issued also as CD Hydroxyapatite remineralization Microhardness Surface roughness Maha Abdelsalam Elbaz , Superivsor Mohamed Adel Ezzat , Superivsor http://172.23.153.220/th.pdf Nazla Revisor Shimaa Cataloger ddc TH 69829 69829 ddc 0 CUCL cl210 2024-02-11 Cai01.09.03.M.Sc.2018.So.M 01010110077016000 2023-09-22 00:00:00 TH ddc 0 CUCL cl2u8 2024-02-11 Cai01.09.03.M.Sc.2018.So.M 01020110077016000 2023-09-22 00:00:00 77016.CD CD