Micro-shear bond strength of nano-filled resin composite to demineralized dentin conditioned with polyacrylic acid-bioactive glass applied by air-abrasion or manually versus sound or demineralized dentin : In-vitro study /
تقيم قوة قص الربط الدقيقة للكمبوزيت الراتنجى النانومترى مع العاج السنى منزوع المعادن المعالج بحمض البولي أكريليك والزجاج النشطة بيولوجيا بالكشط الهوائي أو يدويا بالمقارنة مع العاج السني السليم او منزوع المعادن : دراسة معملية
Amr Abdelfattah Mahmoud Edrees ; Supervised Olfat Elsayed Hassanein , Shereen Hafez Ibrahem
- Cairo : Amr Abdelfattah Mahmoud Edrees , 2018
- 56 P. : photographs ; 25cm
Thesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Operative Dentistry
This study was conducted to evaluate the effect of application of Polyacrylic Acid-Bioactive Glass by air-abrasion or manually on shear bond strength of nano-filled resin composite in comparison to sound or demineralized dentin. Eight sound human molars were selected for this study. Each specimen was sectioned bucco-lingualy and mesio-distally into four quarters: mesio-buccal (MB), mesio-lingual (ML), disto-buccal (DB) and disto-lingual (DL).The occlusal surfaces of the specimens were grounded to expose standardized mid-thickness dentin. The specimens were suspended into glass tubes containing 20 ml of demineralizing solution (pH 4.5) for 72 hours, in an incubator at a temperature of 37oC except for 5 specimens of the positive control group. The specimens were divided into four main groups according to the surface treatment performed eight specimens each. Group (A₁) refers to positive control group without using bioactive glass.Group (A₂) refers to demineralized dentin surface. Group (A₃) refers to demineralized surface after application of bioactive glass powder by air abrasion and Group (A₄) refers to demineralized surface after application of bioactive glass powder manually
Micro-shear bond strength Nano-filled resin composite Polyacrylic acid