Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network

Open Access. Powered by Scholars. Published by Universities.®

Medicine and Health Sciences

2019

Faculty of Dental Medicine (Girls' branch)

Keyword

Articles 31 - 60 of 60

Full-Text Articles in Entire DC Network

Effect Of Different Chelating Agents On Bond Strength Of C-Point Obturating System To Radicular Dentin, Sara E. Abdelaziz, Mervat I. Fawzy, Hagar A. Bastawy Apr 2019

Effect Of Different Chelating Agents On Bond Strength Of C-Point Obturating System To Radicular Dentin, Sara E. Abdelaziz, Mervat I. Fawzy, Hagar A. Bastawy

Al-Azhar Journal of Dentistry

This study was designed to assess the effect of 17% ethylenediaminetetraacetic acid (17%EDTA) and 0.2% Chitosan as chelating agents on bond strength of CPoint obturation system to root canal dentin. Materials and Methods: Fifty extracted lower premolars were selected and prepared using Universal ProTaper rotary files then the samples were equally distributed into 2 main groups depending on the type of the final rinse. Group I:17 % EDTA, Group II: 0.2% chitosan, Control group: distilled water. Each main group was further equally distributed into 2 subgroups depending on the type of the filling material. Subgroup A: samples were obturated with …


Effect Of Different Wall Thicknesses On Fracture Strength, Marginal Accuracy And Translucency Of Monolithic Ceramic Restorations, Marwa M. Abd El Aziz, Mona H. Mandour, Rania A. Shetawey Apr 2019

Effect Of Different Wall Thicknesses On Fracture Strength, Marginal Accuracy And Translucency Of Monolithic Ceramic Restorations, Marwa M. Abd El Aziz, Mona H. Mandour, Rania A. Shetawey

Al-Azhar Journal of Dentistry

The present study was conducted to evaluate the effect of different crown wall thicknesses (0.5mm, 1mm and 1.5mm) on the fracture load, marginal accuracy, and translucency of monolithic CAD-CAM manufactured lithium disilicate and Zirconia crowns. Materials and Methods: 60 monolithic single were constructed using CAD/CAM machine divided into two groups according to the material of construction Group (E): Monolithic IPS e.max CAD lithium disilicate crowns and Group (B): Monolithic BruxZir Solid zirconia based crowns. Each group was divided into three subgroups according to the axial wall thickness of the crown into Subgroup (0.5): 0.5 mm margin thickness, Subgroup (1): 1mm …


Evaluation Of Shear Bond Strength Of Self-Adhering Flowable Composite To Mineral Trioxide Aggregate And Biodentine, Asmaa O. Abdel-Rhman, Mohsen N. El-Din, Mahmoud H. Mohamed Apr 2019

Evaluation Of Shear Bond Strength Of Self-Adhering Flowable Composite To Mineral Trioxide Aggregate And Biodentine, Asmaa O. Abdel-Rhman, Mohsen N. El-Din, Mahmoud H. Mohamed

Al-Azhar Journal of Dentistry

This study aimed to evaluate shear bond strength of mineral trioxide aggregate and biodentine to self-adhering flowable composite. Materials and Methods: eighty Double Split Teflon mold has been prepared with a central hole measuring (3mm in diameter and 2 mm in height) for the mold used for tested materials and (2mm in diameter and in height) for the other mold used for restorative material. The molds were filled with MTA and Biodentine. The mixing material MTA and biodentine applied to its mold (n = 40) and allocated into 2 groups. The specimens will store for72 hours at 37˚C and 100% …


Impact Of Different Movement Kinematics On The Deformation Of Tf Adaptive Files, Sabah M Sobhy, Mervat I. Fawzy, Hagar A. Bastawy Apr 2019

Impact Of Different Movement Kinematics On The Deformation Of Tf Adaptive Files, Sabah M Sobhy, Mervat I. Fawzy, Hagar A. Bastawy

Al-Azhar Journal of Dentistry

This study was designed to evaluate the effect of different movement kinematics on the deformation of TF Adaptive files using Dental Operating Microscope (DOM) and Scanning Electron Microscope (SEM). Materials and Methods: One hundred and eighty extracted human mandibular molars were selected with curved mesiobuccal canal (15º-35º). Thirty new sets of TF Adaptive files were divided into 3 groups according to the movement kinematics used (10 instruments each). Group I: 60 samples were instrumented with 10 TF Adaptive files in adaptive motion with TF Adaptive program Elements motor. Group II: 60 samples were instrumented with 10 TF Adaptive files in …


Marginal Adaptation Of Lithium Disilicate Endocrowns With Different Cavity Depths And Margin Designs, Kholoud M Soliman, Mona H Mandor, Walaa El Mekkawi Apr 2019

Marginal Adaptation Of Lithium Disilicate Endocrowns With Different Cavity Depths And Margin Designs, Kholoud M Soliman, Mona H Mandor, Walaa El Mekkawi

Al-Azhar Journal of Dentistry

to study effect of different preparation designs on the marginal adaptation of lithium disilicate endocrowns. Materials and methods: Twenty human mandibular molars were selected to conduct the present study. All teeth were randomly divided into 2 groups (n=10 each) according to the preparation design of endocrown with two coronal cavity depths: Group (2D): Endodontically treated teeth with 2mm depth intra-coronal cavity preparation .Group (4D): Endodontically treated teeth with 4mm depth intra-coronal cavity preparation. Samples of each group were further subdivided into 2 subgroups (n=5 each) according to the preparation’s margin configuration: Subgroup (B): preparations with butt-joint margin configuration. Subgroup (S): …


Marginal And Internal Fit Of Monolithic And Veneered Zirconia Crowns, Mai I. Mohammed, Mona H Mandour, Rania A. Shetawey Apr 2019

Marginal And Internal Fit Of Monolithic And Veneered Zirconia Crowns, Mai I. Mohammed, Mona H Mandour, Rania A. Shetawey

Al-Azhar Journal of Dentistry

The present study was conducted to evaluate the effect of veneeringzirconia frameworks on the marginal and internal fit of zirconia based restorations.Materials and methods: Forty natural premolars were prepared to receive all-ceramiccrowns. The forty premolars were divided into two groups according to the type of restoration.Group (I) consisted of ten samples restored using monolithic zirconia crowns.Group (II) consisted of thirty samples restored using veneered zirconia frameworks.Group II was subdivided into three equal subgroups according to veneering technique.Subgroup (IIA) veneered using manual layering technique, Subgroup (IIB) veneeredusing Press-on technique and Subgroup (IIC) veneered using CAD-on technique. Allthe finished crowns were cemented …


The Effect Of Occlusion And Two Denture Base Material On Muscle Activity And Masticatory Efficiency Of Complete Dentures, Marwa Ezz El-Din, Mohammed Essam El-Din Sanad, Hala M. Gamal El-Din Apr 2019

The Effect Of Occlusion And Two Denture Base Material On Muscle Activity And Masticatory Efficiency Of Complete Dentures, Marwa Ezz El-Din, Mohammed Essam El-Din Sanad, Hala M. Gamal El-Din

Al-Azhar Journal of Dentistry

The aim of this study was to evaluate the effect of occlusion and two different denture base material on muscle activity and masticatory efficiency of complete dentures. Material and Methods: Two complete dentures of different material, conventional and flexible denture base material with different occlusal schemes, starting with unbalanced occlusion and converted into bilateral balanced occlusion through three different ways of remounting, laboratory, clinical and intra-oral selective grinding applied on three different posterior teeth assemblies were delivered to patients who were totally edentulous (all were men range age 50-60 years). Muscle activity and masticatory efficiency were evaluated with two different …


The Efficacy Of Computer Guided Surgery In Preserving Ramal Height And Skull Base During Gap-Arthroplasty In Patients With Tmj Bony Ankylosis, Hanan Reda, Susan Abd El Hakim, Ghada Khalifa Apr 2019

The Efficacy Of Computer Guided Surgery In Preserving Ramal Height And Skull Base During Gap-Arthroplasty In Patients With Tmj Bony Ankylosis, Hanan Reda, Susan Abd El Hakim, Ghada Khalifa

Al-Azhar Journal of Dentistry

The aim of the study was to compare between computer guided surgery and the traditional method in preserving vertical ramus height (VRH) and the skull base thickness during gap arthroplasty in patients with the TMJ bony ankylosis. Material and methods: Twelve patients with 15 joints suffering from true bony TMJ ankylosis were included in this study. The patients were divided into 2 groups: Group A (8 joints); The ankylosis was released by computer-assisted 1cm gap arthroplasty. Group B (7 joints); The ankylosis was released by traditional 1cm gap arthroplasty. Pre and postoperative clinical examinations included: measurements of maximum interincisal opening, …


Evaluation Of Different Attachment Systems On Single Implant Retained Mandibular Overdenture, Sara Medhat, Nesrin A El Mahrouky, Hala M Gamal El-Din, Nahed A Abd El Moniem Apr 2019

Evaluation Of Different Attachment Systems On Single Implant Retained Mandibular Overdenture, Sara Medhat, Nesrin A El Mahrouky, Hala M Gamal El-Din, Nahed A Abd El Moniem

Al-Azhar Journal of Dentistry

This study was conducted to evaluate bone height around ball and socketand equator attachment in mandibular overdenture retained by single implant. Materialand methods: Ten completely edentulous patients were selected with ages rangingfrom 50-60 years. Single implant was inserted for each patient and they all receivedheat cured acrylic dentures. The ten patients were divided into two groups, group(I) have received ball &socket attachment, group (II) received equator attachment.In the fitting surface of the lower denture two holes where made between 6 and 7acrylic teeth and were filled with radioopaque material (amalgam) . These representedposterior marker areas of evaluation the bone height. …


Effectiveness Of Chitosan As Final Irrigating Solution On Bond Strength Of Resin Based Sealer To Radicular Dentin, Sarah S. Hashem, Mervat I. Fawzy, Hagar A. Bastawy Apr 2019

Effectiveness Of Chitosan As Final Irrigating Solution On Bond Strength Of Resin Based Sealer To Radicular Dentin, Sarah S. Hashem, Mervat I. Fawzy, Hagar A. Bastawy

Al-Azhar Journal of Dentistry

This study was designed to assess the impact of Chitosan-acetate as final root canal irrigant on bond strength of resin-based sealer to radicular dentin.Materials and Methods: Forty extracted human lower premolars with single roots and canals were prepared with ProTaper Universal rotary files till size F4. The samples were dispensed into 3 experimental groups according to the final rinse used and control group (10 samples each); Group I: irrigated with 0.2% chitosan acetate, Group II:17% EDTA, Group III: distilled water and control group (IV): saline. The samples were obturated by cold lateral compaction technique using AH plus sealer. Samples were …


Micro- Computed Tomographic Evaluation Of Marginal Fit Of Different Monolithic All Ceramic Crowns Fabricated Using Two Cad/Cam Systems., Asmaa Abdel Gawad, Mohamed El-Yassaky, Atef Fathi, Mona Hossam El Din Apr 2019

Micro- Computed Tomographic Evaluation Of Marginal Fit Of Different Monolithic All Ceramic Crowns Fabricated Using Two Cad/Cam Systems., Asmaa Abdel Gawad, Mohamed El-Yassaky, Atef Fathi, Mona Hossam El Din

Al-Azhar Journal of Dentistry

the objective of the present in vitro study was to evaluate the effect of two different CAD/CAM systems on the marginal fit of three commercially available dental ceramics using micro-computed tomography. Materials and Methods: one human natural premolar was selected, received a standardized all ceramic preparation and duplicated using two types of die materials. PMMA dies were used for construction of E.max CAD and Vita Enamic monolithic crowns while zirconia dies were used for zirconia crowns. A total of thirty monolithic all-ceramic crowns (N=30) were constructed on the fabricated working dies. These were equally divided into 2 groups (n=15) according …


The Remineralizing Effect Of Incorporating Ca-Phosphate And Ca-Fluoride Nanoparticles Into The Self-Etch Adhesives Used In Restoring Class I Cavities, Mona Essam, Maha A. Niazy, Hadeel Farouk, Amani A. Mostafa Apr 2019

The Remineralizing Effect Of Incorporating Ca-Phosphate And Ca-Fluoride Nanoparticles Into The Self-Etch Adhesives Used In Restoring Class I Cavities, Mona Essam, Maha A. Niazy, Hadeel Farouk, Amani A. Mostafa

Al-Azhar Journal of Dentistry

This study was carried out to investigate the remineralizing effect of amorphous calcium phosphate (ACP) and calcium fluoride (CaF2) nanoparticles incorporated in two-step self etch- adhesives (in vivo). Materials and Methods: The nanoparticles were incorporated into the bond of ClearfilTM SE Bond at a mass fraction of 10%. A total of ten patients in the age range of 17-30 years old, having at least 3 carious lower molars, were enrolled in this study (split mouth design). Class I cavity preparation was performed, leaving the caries affected dentine at the pulpal floor. The 30 molars were divided into 3 groups (n=10) …


Effect Of Silanized Silicon Dioxide And Titanium Dioxide Nanoparticles Loading On The Compressive Strength Of Prepared Composite Core Material, Mai M. Elbatanony, Sayed H. Saniour, Maha A. Niazy, Inas T. Motawae, Magdy W. Sabaa, Dalia Y. Zaki, Haidy N. Salem Apr 2019

Effect Of Silanized Silicon Dioxide And Titanium Dioxide Nanoparticles Loading On The Compressive Strength Of Prepared Composite Core Material, Mai M. Elbatanony, Sayed H. Saniour, Maha A. Niazy, Inas T. Motawae, Magdy W. Sabaa, Dalia Y. Zaki, Haidy N. Salem

Al-Azhar Journal of Dentistry

the aim of this study was to assess the effect of silanized silicon dioxide and titanium dioxide nanoparticles loading on the compressive strength of experimentally prepared resin composite core material. Materials andMethods: Resin matrix was prepared by adding 70 wt% Bis-GMA,30 wt% TEGDMA, 0.5 wt% CQ and 0.5 wt% EDAB. Sintering of the silica nanoparticles was performed and then the silanized sintered silica fillers together with titanium dioxide nanoparticles and silica nanoparticles were mixed with the prepared resin matrix. Specimens of the experimental and control resin composite were prepared in split Teflon moulds (4x6mm) for compressive strength testing using universal …


Fracture Resistance Of Endodontically Treated Maxillary Second Premolars Restored With Corono-Radicular Stabilization Method (In Vitro Study), Mariem M. Abu Elyazid, Mohsen M. Nour El Deen, Mohamed A. El Yasaky Apr 2019

Fracture Resistance Of Endodontically Treated Maxillary Second Premolars Restored With Corono-Radicular Stabilization Method (In Vitro Study), Mariem M. Abu Elyazid, Mohsen M. Nour El Deen, Mohamed A. El Yasaky

Al-Azhar Journal of Dentistry

This study aims to investigate the fracture resistance of endodontically treated maxillary second premolars using fracture resistance test. Materials and Methods: Fifty-five maxillary second premolars were selected. The teeth were divided into four groups (three experimental groups and one control group) each group consists of fifteen teeth. The control group consists of ten teeth. The experimental groups were divided according to the mechanical system used: Endo Star, Revo S, and Protaper. Each group was subdivided into two subgroups according to the presence of the crown or not. Endo star E5 group: (1.a) and (2.a), Revos group :(1.b) and (2.b), Protaper …


The Efficacy Of Reciprocating Instruments Versus Continuous Rotary Nickel-Titanium Instruments In Root Canal Retreatment With Different Filling Materials, Sara M. Galal, Wael H. Kamel, Mohsen M. Nour El-Deen Apr 2019

The Efficacy Of Reciprocating Instruments Versus Continuous Rotary Nickel-Titanium Instruments In Root Canal Retreatment With Different Filling Materials, Sara M. Galal, Wael H. Kamel, Mohsen M. Nour El-Deen

Al-Azhar Journal of Dentistry

The aim of this study was directed to rate the quality of differentEngine-driven retreatment files: ProTaper Retreatment files, Wave One system and OneShape system in removal of different filling materials. Material and methods: Nighty-six freshly extracted mandibular first molars were prepared with universal ProTaper rotary files till size F3 then categorized into two main groups (I and II) on the basis of type of material used in obturation. Group I: obturated with Gutta-percha, Group II: obturated with EndoREZ. Each One of them was categorized into three subgroups : sub group A, B and C on the basis of the system …


Splinting Of Mini Implants Used To Assist Complete Mandibular Overdentures With Two Different Bar Designs: A 3-Year Clinical And Radiographic Study, Radwa M.K. Emera, Heba Nabil Jan 2019

Splinting Of Mini Implants Used To Assist Complete Mandibular Overdentures With Two Different Bar Designs: A 3-Year Clinical And Radiographic Study, Radwa M.K. Emera, Heba Nabil

Al-Azhar Journal of Dentistry

Purpose : Clinical and radiographic evaluation of early loaded four splinted mini dental implants (MDIs) with two different bar designs for assisting mandibular complete overdenture. Materials and Methods: Twenty completely edentulous patients (10 males and 10 females) with mean age of 52.5 years old were selected for this study.All patients received four mini implants in the mandibular interforaminal area. Patients were assigned into two equal groups according to splinting bar design, where it was milled bar for Group I and round bar joint for Group II. Maxillary complete denture was constructed for each patient against implant assisted mandibular overdenture. Periimplant …


Evaluation Of Retention Of A Recently Suggested Flexible Denture Base Material, Noha T. Alloush, Mohamed E. Sanad, Shereen M. Kabeel Jan 2019

Evaluation Of Retention Of A Recently Suggested Flexible Denture Base Material, Noha T. Alloush, Mohamed E. Sanad, Shereen M. Kabeel

Al-Azhar Journal of Dentistry

Purpose was to evaluate the retention of thermo-elastic acrylic resin versus conventional heat cured acrylic resin. Material and Methods: Ten completely edentulous patients were divided into two groups, patients in this first group received one maxillary and mandibular complete denture made of conventional heat cured acrylic resin, and wearing it for one month, and then the mandibular denture was replaced by another one whose denture base was made of thermoelastic acrylic resin. Patients were instructed to wear the dentures for one month before evaluation of retention. While in the second group, the other patients received one maxillary conventional heat cured …


Comparison Between Two Different Impression Techniques In Ball And Socket Attachments Supported Complete Implant Overdentures On Electromyographic Activity, Marwa Seif El Nasr, Mostafa M. Abd El Ghany, Dina M. Kholief Jan 2019

Comparison Between Two Different Impression Techniques In Ball And Socket Attachments Supported Complete Implant Overdentures On Electromyographic Activity, Marwa Seif El Nasr, Mostafa M. Abd El Ghany, Dina M. Kholief

Al-Azhar Journal of Dentistry

Purpose: The purpose of this study was to compare between two different impression techniques in ball and socket attachments supported complete implant overdentures on electromyographic activity. Material and Methods: Ten fully edentulous patients were chosen from the patient clinic of removable prosthodontics department, Patients were divided into 2 groups according to the type of impression technique Group 1: The patients received the denture with the open impression tray technique then a washing period of two weeks elapsed and then switched to the other denture with closed impression tray technique. Group 2: The patients received the denture with the closed impression …


Evaluation Of Fascin Expression In Selected Salivary Gland Tumors (An Immunohistochemical Study), Alaa E. Ebrahim, Nadia A. Radi, Eman A. Abo Hager Jan 2019

Evaluation Of Fascin Expression In Selected Salivary Gland Tumors (An Immunohistochemical Study), Alaa E. Ebrahim, Nadia A. Radi, Eman A. Abo Hager

Al-Azhar Journal of Dentistry

Purpose: Fascin taken countless attention between cytoskeletal proteins; this because it is not normally present in epithelial tissues, and it’s role in epithelial to mesenchymal transition leads to motility and invasion of cancer cells. The purpose of this work was to estimate the expression of the cytoskeleton-associated protein fascin as a prognostic indicator of invasiveness in salivary gland neoplasms and also, to relate its expression with the biological behavior of the salivary gland neoplasms by mean of the immunohistochemical technique. Material and method: 50 cases of salivary gland tissues were collected as paraffin embedded blocks: 20 benign cases (10 pleomorphic …


Assessment Of Microbial Adherence On Conventional And Cad/Cam Complete Denture, Dina M Kholief, Shereen M Kabeel Jan 2019

Assessment Of Microbial Adherence On Conventional And Cad/Cam Complete Denture, Dina M Kholief, Shereen M Kabeel

Al-Azhar Journal of Dentistry

Purpose: The aim of the study was to assess microbial adherence on maxillary complete denture carried by different fabrication techniques; the conventional and CAD/CAM ( computer-aided design and computer-aided manufacturing) techniques. Material and methods : Ten completely edentulous patients were selected and divided into randomly two equal groups: group I, patients received maxillary and mandibular complete dentures made of conventional heat-cured acrylic resin and group II, patients received maxillary CAD/CAM complete denture and mandibular conventional complete denture. Assessment of the microbial colonization of maxillary dentures for both groups was carried out after 3, 6 and 9 months after denture insertion. …


The Effect Of Flexible Acrylic Resin Lingual Flanges On The Retention Of Mandibular Complete Dentures, Huda Salama, Hala Gamal Eldin, Yasmeen Almahdy Jan 2019

The Effect Of Flexible Acrylic Resin Lingual Flanges On The Retention Of Mandibular Complete Dentures, Huda Salama, Hala Gamal Eldin, Yasmeen Almahdy

Al-Azhar Journal of Dentistry

. Purpose: To evaluate the effect of flexible lingual flanges on the retention of conventional mandibular complete denture. Material and methods: Ten completely edentulous patients were selected for this study with ages ranged from 50-60 years. All patients had received heat cured acrylic resin denture without modification (Group І) then heat cure lingual flanges were removed and replaced by flexible lingual flanges (Group ІІ). All patients were instructed to use their resin dentures for equal periods of three months when retention of denture base were measured after one month and at the end of three months, period of two week …


Effect Of Etching Time And Bioglass Nanoparticle Incorporation In Adhesive Resin On Microtensile Bond Strength To Enamel, Doaa A. Elsharkawy Jan 2019

Effect Of Etching Time And Bioglass Nanoparticle Incorporation In Adhesive Resin On Microtensile Bond Strength To Enamel, Doaa A. Elsharkawy

Al-Azhar Journal of Dentistry

Purpose : The aim of the study was to evaluate the effect of addition of 20% bioactive glass nanoparticles (bioglass) to a universal adhesive on its microtensile bond strength to enamel etched for different times. Methods: Twenty eight enamel central incisor specimens were used in this study and divided into four groups; E1, E2, E3 and E4. E1and E3 were bonded using unmodified universal adhesive while E2 and E4 were bonded using 20% bioglass modified adhesive. Groups E1 and E2 were etched with 37% phosphoric acid for 30 seconds while E3 and E4 were etched for 6o seconds. Adhesive was …


Comparison Between Tracing Method And Cone Beam Imaging For Recording Bennett Movement, Sara M. Bahaa El-Din, Mostafa M. Abd El-Ghany, Amany A. Abd El-Fattah, Dina M. Kholief Jan 2019

Comparison Between Tracing Method And Cone Beam Imaging For Recording Bennett Movement, Sara M. Bahaa El-Din, Mostafa M. Abd El-Ghany, Amany A. Abd El-Fattah, Dina M. Kholief

Al-Azhar Journal of Dentistry

Purpose: Was to compare between tracing method and Cone Beam imaging for recording Bennett movement and lateral condylar angle. Material and methods: Ten completely edentulous patients were selected with ages ranged from 50-60 years, with average age 55years. Each patient received complete denture and teeth were arranged according to balanced occlusion concept. The lateral condylar angle was measured by Gothic arch tracer and with Cone Beam imaging for each side. The Immediate Bennett shift was measured using condylar tracing and the Cone Beam imaging for each condyle during its lateral shift. Results: The result of this study showed that there …


Effect Of Nanotitanium Dioxide Fillers Addition On The Compressive Strength Of Experimental Composite Resin Core Material, Amal M. El Shahawi, Maha A. Neyazy, Inas T. Motawea, Magdy S. W Farag, Dalia Y. Zaki, Marwa A. Sherief, Haidy N. Salem Jan 2019

Effect Of Nanotitanium Dioxide Fillers Addition On The Compressive Strength Of Experimental Composite Resin Core Material, Amal M. El Shahawi, Maha A. Neyazy, Inas T. Motawea, Magdy S. W Farag, Dalia Y. Zaki, Marwa A. Sherief, Haidy N. Salem

Al-Azhar Journal of Dentistry

Purpose: The objective of this study was to prepare an experimental dental composite resin core material loaded with prepared nanotitanium dioxide fillers and to evaluate the compressive strength of the experimentally prepared composite materials Materials and methods: prepared nanotitanium dioxidefillers, commercial nanosilica were used as a filler added to the experimentally prepared resin matrix and commercially available resin core material Nexcomp was used as a control. Preparation and characterization of a nanotitanium dioxide fillers through the following techniques: X-ray diffraction (XRD) analysis, Fourier transform infrared (FTIR) spectroscopy analysis, Scanning electron microscopic (SEM) analysis, EDX analysis,Transmission electron microscopy (TEM) analysis, and …


Comparative Study Of Some Natural Materials Versus Traditional Medicaments Used For Pulp Treatment Of Primary Teeth, Sara N. Hashem, Mervat I. Fawzy, Mohammed H. Mostafa Jan 2019

Comparative Study Of Some Natural Materials Versus Traditional Medicaments Used For Pulp Treatment Of Primary Teeth, Sara N. Hashem, Mervat I. Fawzy, Mohammed H. Mostafa

Al-Azhar Journal of Dentistry

Purpose: To evaluate clinically, radiographically and histologically the postoperative success of Miswak, Allium sativum and Nigella sativa extracts use in pulpotomy procedures for primary teeth Materials and Method: 92 Primary teeth found in 26 patients were selected according to inclusion criteria. In the first part of the study pulpotomy was accomplished in 20participants having 80 teeth and depending on the type of radicular pulp medicament, the teeth were divided randomly and equally into four groups: Group I (Miswak group),GroupII (Nigella sativa group),GroupIII(Allium sativum group) ,Group IV(formocresol group). Clinical follow up was done after 1,3, and 6 months.Periapical radiographs also were …


Evaluation Of Fracture Resistance Of Some Contemporary Class Ii Glass Ionomer Restorations At Different Time Intervals, Nafesa Sakr, Maha Niazy, Nevin Gad Jan 2019

Evaluation Of Fracture Resistance Of Some Contemporary Class Ii Glass Ionomer Restorations At Different Time Intervals, Nafesa Sakr, Maha Niazy, Nevin Gad

Al-Azhar Journal of Dentistry

Purpose: was to evaluate and compare fracture resistance of some contemporary glass ionomer restorations (Amalgomer CR, EQUIA Fort fil and EQUIA fil) in class II cavities at different time intervals. Materials and Methods: A total of 90 class II cavities were prepared in extracted maxillary premolars (n=90). The samples were divided into three main groups (30 each) according to the materials; These three groups were further subdivided into three groups according to assessment time; 24 hours, one month and three months. Each material was applied to the cavity according to manufactures’ instructions. Samples were stored in artificial saliva for the …


Experimental Study Of Bone Defect Repair Using Centrifuged And Non-Centrifuged Bone Marrow Aspirate, Hanaa H El-Marzouky, Fatma A Khalifa, Ghada A Khalifa, Ashraf A Shamaa, Mona H Farid, Shadia Elsayed Jan 2019

Experimental Study Of Bone Defect Repair Using Centrifuged And Non-Centrifuged Bone Marrow Aspirate, Hanaa H El-Marzouky, Fatma A Khalifa, Ghada A Khalifa, Ashraf A Shamaa, Mona H Farid, Shadia Elsayed

Al-Azhar Journal of Dentistry

Purpose this study was conducted between 2015 and 2017 at the faculty of Veterinary Medicine Cairo University and aimed to histologically compare between the effect of processed and unprocessed bone marrow aspirate on the quantity and quality of the newly formed bone. Material and methods 72 Adult male white New Zealand rabbits were used in this study and were divided equally into 2 groups A and B. Bone defects were created at the medial upper extremity of right and left tibia of all rabbits down to bone using trephine bur measuring 4 mm diameter to 5 mm depth. The bone …


Clinical And Radiographic Assessment Of Platelet Rich Fibrin Effect In One-Stage Dental Implant, Radwa M. Ismail, Eatemad A. Shoreibah, Mai S. Attia Jan 2019

Clinical And Radiographic Assessment Of Platelet Rich Fibrin Effect In One-Stage Dental Implant, Radwa M. Ismail, Eatemad A. Shoreibah, Mai S. Attia

Al-Azhar Journal of Dentistry

Purpose : The present study was conducted to evaluate the clinical and radiographic effect of Platelet Rich Fibrin (PRF) in one stage dental implants in an attempt to improve outcomes of dental implants. Material and methods : This study was conducted on twelve (12) healthy patients that were randomly divided into two groups: Group A (control group) six (6) patients with one stage implant insertion without the use of platelet rich fibrin membrane ; Group B (Test group) six (6) patients with one stage implant insertion with the use of Platelet Rich Fibrin membrane. Results: Test group showed a highly …


Evaluation Of The Antibacterial Effect Of Apple Vinegar As A Root Canal Irrigant Using Endovac Irrigation System, Taghreed S. El-Sayed, Mohsen M. Nour El-Deen, Mohamed E. Rokaya, Mohamed M. Sherif Jan 2019

Evaluation Of The Antibacterial Effect Of Apple Vinegar As A Root Canal Irrigant Using Endovac Irrigation System, Taghreed S. El-Sayed, Mohsen M. Nour El-Deen, Mohamed E. Rokaya, Mohamed M. Sherif

Al-Azhar Journal of Dentistry

Purpose: This study aimed to evaluate the antibacterial effect of Apple Vinegar as a root canal irrigant using Endovac irrigation System. Materials and Methods: for this study, 60 extracted human teeth were used. After their decapitation, they were instrumented using Universal ProTaper rotary files up to size F4 then separated into 2 set of groups according to the solution used in irrigation; Group A1: irrigated with 5.25 NaOCl Group A2: irrigated with Apple vinegar (30 specimens in each group). We then subdivided each group into 2 subgroups according to the technique used for irrigation; Subgroup A: using conventional irrigation and …


The Effect Of Changing Vertical Dimension Of Complete Denture Within Its Normal Range On Sound Production With The Presence Or Absence Of Palatal Rugae., Amany El-Agha, Hala Gamal Eldeen, Yasmeen Almahdy Jan 2019

The Effect Of Changing Vertical Dimension Of Complete Denture Within Its Normal Range On Sound Production With The Presence Or Absence Of Palatal Rugae., Amany El-Agha, Hala Gamal Eldeen, Yasmeen Almahdy

Al-Azhar Journal of Dentistry

Purpose: To investigate the effect of changing vertical dimension of complete denture within its normal range on phonation with the presence or absence of palatal rugae, using Computerized speech lab (CSL). Material and Methods: Ten completely edentulous patients (aged 50-60 years) were selected for reading some sentences. Each patient had two maxillary and two mandibular dentures with an adaptation period between each denture. The patients’ speech records were divided into four groups,Group I: Maxillary acrylic denture had polished anterior palatal surface without rugae reproduction and a free-way space of 2 mm.Group II: Maxillary acrylic denture with rugae reproduction on its …