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Medicine and Health Sciences Commons

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Dentistry

Faculty of Dental Medicine (Girls' branch)

2016

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Articles 1 - 30 of 40

Full-Text Articles in Medicine and Health Sciences

The Diagnosis Of Neuromuscular In Orthodontics Effects Of Tens On The Antero-Posterior Maxilla-Mandibular Relationship, Yasser Thabet, Abumadyan Aqrabe, Redwan Alaslmy, Mohamed Mohamed Oct 2016

The Diagnosis Of Neuromuscular In Orthodontics Effects Of Tens On The Antero-Posterior Maxilla-Mandibular Relationship, Yasser Thabet, Abumadyan Aqrabe, Redwan Alaslmy, Mohamed Mohamed

Al-Azhar Journal of Dentistry

Objective:This study was conducted in order to assess the changes in the occlusal position of the mandible after ULF (Ultra Low Frequency)- TENS relaxing procedure in subjects in pubertal growth phase with diagnosed Angle Class II division I and mandibular dentoalveolar retrusion. Materials and methods: This study was performed on 70 patients (48 females,22 males) with an Angle Class II division I, aged between 10 and 15 years old (mean age 12.26, SD 1.32) characterized by mandible dentoalveolar retrusion and optimal vertical facial dimension, diagnosed by clinicaland cephalometric evaluation. Diagnostic neuromuscular registrations were made for all subjects. The casts were …


Comparative Study Between Nasogastric (Ryle) Feeding And Oral Feeding Post- Cleft Palate Repair, Mohamed Shahin, Yousry Abdelsalam Oct 2016

Comparative Study Between Nasogastric (Ryle) Feeding And Oral Feeding Post- Cleft Palate Repair, Mohamed Shahin, Yousry Abdelsalam

Al-Azhar Journal of Dentistry

Background: feeding after surgical correction of cleft palate is an important topic; the method of feeding usually affects the surgery outcome and stress of operation in infants. However, no consensus on the method of feeding for children with cleft palate either pre-or post-operative correction. Aim of the work: to investigate the effect of nasogastric tube (NGT) feeding compared with oral feeding on children in the first 48 hours after primary cleft palate repair. Patients and methods: The study was carried out at Al-Azhar University Hospital (Pediatric Surgery Unit);Damietta and specialized kids hospital during the period from January 2015 to Jun …


A Comparative Prospective Clinical Study Of Two Different Implant System With Zirconia Abutment For Cemented Single Tooth Restoration, Sahar Abdel Wahab, Shadia Lsayed Oct 2016

A Comparative Prospective Clinical Study Of Two Different Implant System With Zirconia Abutment For Cemented Single Tooth Restoration, Sahar Abdel Wahab, Shadia Lsayed

Al-Azhar Journal of Dentistry

Statement of problem. Treatment of tooth loss in the anterior maxilla can involve difficult functional, esthetic, and psychological problems, especially in young patients with otherwise good dentition. Purpose. The purpose of this study was to provide a comparative evaluation of two different implant system (Biohorizons and Dentium) with zirconia abutment in cemented single-tooth restorations. Material and methods. This prospective study of 45 single-tooth replacements with 22 Biohorizons and 23 Dentium dental implants was performed in 30 patients. The patients were selected from the outpatients’ clinic, Faculty of Dental Medicine, Al- Azhar University during the period October 2010 to October 2013. …


Conventional 2.0 Mm Miniplates Versus 3d Miniplate In Mandibular Fracture Fixation, Mariam Kamel, Nahed Abd El Moniem, Fahmy Abdel Aalhassanein, Susan Hassan Oct 2016

Conventional 2.0 Mm Miniplates Versus 3d Miniplate In Mandibular Fracture Fixation, Mariam Kamel, Nahed Abd El Moniem, Fahmy Abdel Aalhassanein, Susan Hassan

Al-Azhar Journal of Dentistry

The aim of the present study was to clinically and radiographically compare and evaluate the treatment outcomes using 3D miniplate versus conventional 2.0 mm miniplates in fractures fixation of the anterior mandible. The study enrolled 16 patients with a total of 18 fractures; suffering from anterior mandibular fractures (symphysis and/or parasymphysis) requiring open reduction and internal fixations through an intra-oral approach. Groups I patients were fixed using 3D titanium miniplates and screws. Group II patients were fixed using two 2.0 mm titanium miniplates and screws.Postoperative primary clinical treatment outcome points for comparative evaluation for all patients were fracture stability, the …


The Effect Of Using Cross-Linking Agent With Nano-Adhesive On The Bonding To Sound And Caries Affected Dentin, Mohamed Abdelaal, Maha Niazy, Randa Hafez, Asmaa Yassen Oct 2016

The Effect Of Using Cross-Linking Agent With Nano-Adhesive On The Bonding To Sound And Caries Affected Dentin, Mohamed Abdelaal, Maha Niazy, Randa Hafez, Asmaa Yassen

Al-Azhar Journal of Dentistry

Aim: This study was designed to evaluate the microtensile bond strength and the effect of storage on using two different concentrations (6.5% and 15 %) of grape seed extract cross-linking agent with nano-adhesive single bond universal adhesive to sound and caries affected dentin. Methods: A total of sixty molars was divided into 2 main groups (30 each) according to the type of substrate either sound or caries affected dentin. Each group was divided into three equal subgroups (10 teeth each) according to the treatment with cross linking agent (Grape seed extract (GSE)), either with no treatment with GSE or 6.5% …


The Effect Of Two Denture Base Materials On Microbial Colonization Of Complete Dentures In Controlled Diabetic Patients, Sammar Mohamed, Moustafa Abdel Gany, Amany Abdel Fattah, Dina Kholif Oct 2016

The Effect Of Two Denture Base Materials On Microbial Colonization Of Complete Dentures In Controlled Diabetic Patients, Sammar Mohamed, Moustafa Abdel Gany, Amany Abdel Fattah, Dina Kholif

Al-Azhar Journal of Dentistry

Aim: To compare between conventional heat cured Acrylic resin and Flexible thermoplastic resin denture base materials on microbial colonization of complete dentures in Controlled Diabetic patients. Material & Methods: This study included thirty completely edentulous well controlled diabetic patients which were divided into two equal groups, fifteen patients received complete dentures made of conventional heat cured acrylic resin dentures while the other fifteen patients received upper complete denture made of flexible poly amide (Bre-flex 2ndedtion) thermoplastic dentures and lower heat cured acrylic resin denture. Oral swabs for isolation of microorganisms was done with gamma sterilized disposable swabs from tuberosity area …


The Effect Of Demineralized Dentin Matrix Graft Alone And Combined With Statin And Propolis On Bone Repair. (A Histological Study), Mena Abd-Allah, Mona Farid, Nahed Korany, Heba Adawy Oct 2016

The Effect Of Demineralized Dentin Matrix Graft Alone And Combined With Statin And Propolis On Bone Repair. (A Histological Study), Mena Abd-Allah, Mona Farid, Nahed Korany, Heba Adawy

Al-Azhar Journal of Dentistry

Aim: The aim of the present study was to evaluate the effect of demineralized human dentin matrix graft alone and when combined with statin and propolis on bone repair in bone defects in the tibia of rabbits histologically. Materials and Methods Fifteen adult male rabbits (weight 2 to 2.5 kg) were used in this study. In each rabbit four holes were created (two in each tibia), one was left empty as control, the second was packed with DDM slices, the third was packed with DDM slices saturated with statin and the last one was packed with DDM mixed with propolis. …


Effect Of Primer Type And Ultrasonic Cleaning On Bonding To Zirconia Ceramic, Huda El Rashedy, Osama Abd Elgany, Sahar Abd El Wahab Oct 2016

Effect Of Primer Type And Ultrasonic Cleaning On Bonding To Zirconia Ceramic, Huda El Rashedy, Osama Abd Elgany, Sahar Abd El Wahab

Al-Azhar Journal of Dentistry

Zirconia-based ceramics offer strong restorations in dentistry, but the adhesive bond strength of resin cements to such ceramics is not optimal. The aim of the present study was to evaluate the effect of both primer types and ultrasonic cleaning on bonding to zirconia ceramics.A total number of forty zirconia discs were constructed from prefabricated blanks of zirconia. The discs were mounted on acrylic blocks and randomly divided into two equal main groups (n = 20) According to ultrasonic cleaning. Without ultrasonic cleaning and with ultrasonic cleaning. Every group was subdividedinto three subgroups according to type of primer (n= 10) Monobond …


The Effect Of Two Different Denture Base Materials On Retention Of Complete Denture In Severely Resorbed Lower Ridge Cases, Eman Ebrahim, Amany Abdel-Fattah, Shereen Kabee Oct 2016

The Effect Of Two Different Denture Base Materials On Retention Of Complete Denture In Severely Resorbed Lower Ridge Cases, Eman Ebrahim, Amany Abdel-Fattah, Shereen Kabee

Al-Azhar Journal of Dentistry

Aim of the study: to compare between two different denture base materials regarding their effect on the retention of complete dentures in patients with severely resorbed lower edentulous ridges. Material &methods: seven completely edentulous patients with age ranged between 55 and 65 years were selected for this study; each patient received three types of lower dentures to use it for four months, in addition to one week in between as a washing period before wearing the new one. Denture bases classified into three groups, heat cured acrylic resin denture base (Group I), heat cured acrylic resin denture base where the …


Root Resorption Investigated With Con Beam Computed Tomography End Of Orthodontic Treatment With Fixed Appliance, Yasser Thabet, Abumadyan Aqrabe, Redwan Alaslmy, Mohamed Mohamed Oct 2016

Root Resorption Investigated With Con Beam Computed Tomography End Of Orthodontic Treatment With Fixed Appliance, Yasser Thabet, Abumadyan Aqrabe, Redwan Alaslmy, Mohamed Mohamed

Al-Azhar Journal of Dentistry

Objective: To examine the prevalence of orthodontically induced root resorption after treatment and the correlation with resorption found after 7 months of treatment. Materials and Methods: One hundred forty patients (12–19 years) treated with fixed appliancesand extraction of four premolars were examined with con beam computed tomography before treatment, after 7 months of treatment (n=87), and at the end of active treatment. The MalmgrenIndex was used to describe the degree of root resorption. Results: Resorption root severe (>2 mm, score 3) was found in 30% of the patients at the end oftreatment. Extreme root resorption was found in two …


The Effect Of Using Ultra Suction System On Mandibular Complete Denture Retention, Fatma Sayed, Mohamed Sanad, Ola Omar, Hanaa Youssef Jul 2016

The Effect Of Using Ultra Suction System On Mandibular Complete Denture Retention, Fatma Sayed, Mohamed Sanad, Ola Omar, Hanaa Youssef

Al-Azhar Journal of Dentistry

Aim of the study: This study was carried out to evaluate the effect of using ultra suction system on mandibular complete denture retention and on the rate of growth of candida albicans. Material and methods: Ten completely edentulous patients participated in this study. Each patient recived two dentures a conventional mandibular denture(D1 denture) constructed using heat cured acrylic resin and an ultra suction retained denture (D2 denture) which was constructed using heat cured acrylic resin with ultra suction system added to it. Patients were left to function with each denture set for a period one week, one month, three months …


Effect Of Gamma Radiation On Mechanical Properties Of Tooth Structure, Rania Hindi, Hala Hazzaa, Doaa El-Sharkawy Jul 2016

Effect Of Gamma Radiation On Mechanical Properties Of Tooth Structure, Rania Hindi, Hala Hazzaa, Doaa El-Sharkawy

Al-Azhar Journal of Dentistry

This in vitro study was made to evaluate the effect of gamma radiation on mechanical properties of tooth structure. A total number of 40 human premolar teeth were collected. The teeth were healthy and were freshly extracted and they were stored in distilled water for periods of less than one month the teeth were, free from any apparent caries,macroscopic cracks, and abrasion and staining as assessed by visual examination.The teeth were divided into 2 groups of 20 teeth each (A and B) The groups were: 1. Group (A) which served as a control.2. Group (B) which subjected to 60 Gy …


Effect Of Taper Angle And Luting Cement On The Retention And Marginal Accuracy Of All-Ceramic Crowns, Sally Adawy, Atef Fathy, Eman Essam Jul 2016

Effect Of Taper Angle And Luting Cement On The Retention And Marginal Accuracy Of All-Ceramic Crowns, Sally Adawy, Atef Fathy, Eman Essam

Al-Azhar Journal of Dentistry

Marginal accuracy and retention of all-ceramic crowns are crucial prerequisites for their long-term survival. Meanwhile, the innovative revolution of adhesive cementation has led to uncountable number of recent brands through which the dentist has to choose. The aim of the present study was to evaluate the effect of two different tapering angles [10°& 26°] and two different luting cements [Self-etching adhesive & Self adhesive resin cement] on the retention and marginal accuracy of single unit crowns, constructed from three types of ceramics: IPS e-max Press, IPS e-max CAD and ZirconiaCAD/CAM. Seventy two recently extracted sound human molars were used in …


Effect Of Hydroxyapatite And Sodium Hexameta Phosphate Application On Demineralized Enamel And Dentine, Sara Zarem, Maha Niazy, Nevein Gad Jul 2016

Effect Of Hydroxyapatite And Sodium Hexameta Phosphate Application On Demineralized Enamel And Dentine, Sara Zarem, Maha Niazy, Nevein Gad

Al-Azhar Journal of Dentistry

The aim of the present study was to evaluate the remineralizing effect of (hydroxyapatite nano particles,sodium hexametaphosphate, hydroxyapatite nanoparticles and sodium hexametaphosphate in combination) with and without use of artificial saliva on enamel and dentin. Forty freshly extracted human premolars were used in this study.They should be free from caires, macroscopic cracks, abrasion or extensive staining.The teeth were kept in normal saline until use. Each tooth was horizontally cut to separate the crown from the root by using a low – speed double faced diamond disc. Each crown were then sectioned longitudinally in to two parts (buccal and lingual) then …


Evaluation Of Nano- Hydroxyapatite Versus Hydroxyapatite Crystals In The Treatment Of Periodontal Intrabony Defects, Amal El Said, Eatemad Shoriebah, Naglaa El Kilany Jul 2016

Evaluation Of Nano- Hydroxyapatite Versus Hydroxyapatite Crystals In The Treatment Of Periodontal Intrabony Defects, Amal El Said, Eatemad Shoriebah, Naglaa El Kilany

Al-Azhar Journal of Dentistry

The aim of the present study was to evaluate clinically and radiographically theeffectiveness of nano-crystalline hydroxyapatite (NcHA) versus hydroxyapatite (HA)crystals in the treatment of intrabony periodontal defects. Subjects and Methods:Twelve patients with bilateral defects, with probing depth (PD) ≥5 mm and clinicalattachment loss (CAL) ≥3 mm participated in the present study. Subjects were dividedrandomly into Group 1: 12 sites treated surgically with open flap debridement (OFD)and placement of NcHA (1) as a bone substitute. Group 2: 12 sites treated surgicallywith open flap debridement and placement of HA (2) as a bone substitute. The followingclinical parameters were recorded: PD, CAL, plaque …


Effect Of Nanohydroxyapatite With And Without Chlorhexidine On Remineralization Of Carious Dentine At Different Intervals: An In Vivo Study, Samaa Ibrahim, Maha Niazy, Mohammad El- Yasaky, Naglaa El- Kilani Jul 2016

Effect Of Nanohydroxyapatite With And Without Chlorhexidine On Remineralization Of Carious Dentine At Different Intervals: An In Vivo Study, Samaa Ibrahim, Maha Niazy, Mohammad El- Yasaky, Naglaa El- Kilani

Al-Azhar Journal of Dentistry

This invivo study was carried out to evaluate the effect of nanohydroxyapatite (n-HAp); applied with or without prior application of chlorhexidine (CHX), on remineralization of caries- affected and caries infected dentine types. Forty molars in eight patients having class I caries and no pulpal involvement were selected. In each selected molar, caries was removed except from the pulpal floor. Thereafter, molars were divided into two groups (n= 20) according to the type of carious dentine left on the pulpal floor; caries- affected or infected dentine. Each group was further subdividedinto two subgroups (n=10) according to the material that was applied …


Effect Of Application Of Edta And Delayed Light Activation On Bond Strength Of Resin-Modified Glass Ionomer To Dentin, Menna Ali, Maha Niazy, Doaa El-Sharkawy Jul 2016

Effect Of Application Of Edta And Delayed Light Activation On Bond Strength Of Resin-Modified Glass Ionomer To Dentin, Menna Ali, Maha Niazy, Doaa El-Sharkawy

Al-Azhar Journal of Dentistry

The aim of the present study was to evaluate the effect of delayed light activation and the application of EDTA on bond strength between resin modified glass ionomer and dentin. Thirty permanent sound human posterior teeth were used. The crowns were separated from the roots 1mm below cervical line and then the crowns were cut in a mesio-distal direction to obtain two halves. Samples then were embedded in self cure acrylic resin and then trimmed to create flat dentinal surfaces. Samples were divided in to three groups of 20 each according to light activation (immediate, delayed or without). Each group …


The Effect Of Aloe Vera And Eucalyptol Oil On The Development Of Tooth Germs In Albino Rats: A Histological And Histochemical Study, Noura Bakr, Heba Adawy, Marwa El Sheikh Jul 2016

The Effect Of Aloe Vera And Eucalyptol Oil On The Development Of Tooth Germs In Albino Rats: A Histological And Histochemical Study, Noura Bakr, Heba Adawy, Marwa El Sheikh

Al-Azhar Journal of Dentistry

Tooth development or odontogenesis is a very complex process involving many growth factors and transcription factors of genes to ensure an ordered and controlled development of tooth germs. Increasing use of herbal remedies by mothers during pregnancy to avoid side effects of medical drugs may cause systemic and local effects on tooth development. In this study 50 pregnant rats were used, G1 control, GII eucalyptol oil vapour, GIII aloe vera. Offsprings were sacrificed at 1stday and 5th day, the specimens were obtained by serial sagittal sections and stained with (H&E) and Mercuric Bromophenol Blue (special stain). Administration of these herbal …


A Clinical And Laboratory Evaluation Of Different Remineralizing Agents Used For Treatment Of Carious Posterior Teeth, Eman Mohamed, Eatimad Shoreibah, Eman Elmasry, Maha Niazy, Mohamed Mostafa Jul 2016

A Clinical And Laboratory Evaluation Of Different Remineralizing Agents Used For Treatment Of Carious Posterior Teeth, Eman Mohamed, Eatimad Shoreibah, Eman Elmasry, Maha Niazy, Mohamed Mostafa

Al-Azhar Journal of Dentistry

Objective: The purpose of this study is to 1) evaluate clinically and radiographically the carious dentin treated with Ozone, Casein Phosphopeptide - Amorphous Calcium Phosphate (Tooth Mousse) mixed with Glass Ionomer and Glass Ionomer Cement only in primary molars of 4 - 8 years old children (In vivo study), and 2) Compare the microhardness of carious dentin treated with Ozone, Casein Phosphopeptide - Amorphous Calcium Phosphate (Tooth Mousse) mixed with Glass Ionomer and Glass Ionomer Cement only in extracted primary molars (In vitro study). Design: Forty five primary molars with proximal caries in children, ranging in their age from 4-8 …


The Effect Of Siwak And Brushing On Cariogenic Bacteria And Surface Characteristics Of Enamel And Two Brands Of Resin Composite (An In Vitro Study)*, Shahenda Abdullah, Maha Niazy, Inas Motawea Jul 2016

The Effect Of Siwak And Brushing On Cariogenic Bacteria And Surface Characteristics Of Enamel And Two Brands Of Resin Composite (An In Vitro Study)*, Shahenda Abdullah, Maha Niazy, Inas Motawea

Al-Azhar Journal of Dentistry

Purpose: The aim of this study was to evaluate the effect of siwak extract and toothbrush using two brands of toothpaste one containing siwak extract and one without on the cariogenic bacteria and surface characteristic of enamel and two types of composite resin. Materials and Methods: A total of 90 specimens were used in the present study. The specimens were divided into three groups according to the type of material used (n=30); Enamel specimens, Feltk Z350 specimens, and Tetric-N-Ceram Specimens. Each group was further subdivided into 3 subgroups according to the methodof treatment (n=10); specimens treated with Siwak sticks, specimens …


Comparison Of Bond Strength And Apical Seal Obtained In Root Canals Prepared With A New Rotary System Endo Eze System And Obturated With Two Different Techniques, Mervat Mohamed, Mohsen En Nour Eldeen, Mohamed Khalefa Apr 2016

Comparison Of Bond Strength And Apical Seal Obtained In Root Canals Prepared With A New Rotary System Endo Eze System And Obturated With Two Different Techniques, Mervat Mohamed, Mohsen En Nour Eldeen, Mohamed Khalefa

Al-Azhar Journal of Dentistry

The aim of the present study was to compare bond strength and apical seal obtained in root canals prepared with a new rotary system (Endo-Eze) and obturated with two different techniques (AH Plus sealer/ gutta-percha points and EndoREZ sealer/ EndoREZ points). Sixty freshly extracted mandibular first molars were used in this study. The distal root of each collected tooth was removed by tapered diamond stone mounted in high-speed handpiece. Mesio-buccal canals of teeth were cleaned and shaped by Endo-Eze system, then they were classified into two main groups of 30 each accordingto obturation materials used, Group (1): canals were obturated …


Effect Of Food Simulating Liquids And Thermo-Cycling On Flexural Strength And Surface Hardness Of A Resin Nano-Ceramic Cad/Cam Material, Ahmed Sayed, Maha Niazy, Inas Motawee Apr 2016

Effect Of Food Simulating Liquids And Thermo-Cycling On Flexural Strength And Surface Hardness Of A Resin Nano-Ceramic Cad/Cam Material, Ahmed Sayed, Maha Niazy, Inas Motawee

Al-Azhar Journal of Dentistry

Purpose: Evaluate the effect of food simulating liquids and thermocycling on miniflexural strength and surface micro-hardness of a resin nano-ceramic material (Lava Ultimate) compared to indirect laboratory composite resin material (Nexco Paste) and direct composite resin material (Filtek Z350 XT).Material and Methods: A total number of 180 samples were fabricated. The samples were divided equally into 3 groups (n=60). Group 1 (M1) samples were fabricated from the resin nano ceramic CAD/CAM blocks (Lava Ultimate), group 2 (M2) samples were farbricated form indirect micro-hybrid resin composite (Nexco Paste), while group 3 (M3) samples were fabricated from direct resin composite (Filtek Z350 …


Evaluation Of The Antimicrobial Effect Of Propolis Extract On Oral Microflora, Safaa El-Sayed, Samy El-Bayoumy, Mohamed Mostafa, Magda El-Malt Apr 2016

Evaluation Of The Antimicrobial Effect Of Propolis Extract On Oral Microflora, Safaa El-Sayed, Samy El-Bayoumy, Mohamed Mostafa, Magda El-Malt

Al-Azhar Journal of Dentistry

Aim: This study was conducted to evaluate the antimicrobial effect of propolis extract with different dilutions when applied as mouth wash in vivo against a known antiseptic agent (0.2%Chlorhexidine) . Material and Methods: Ninety children were selected for this study. All children were examined clinically for dental caries and used to evaluate the antimicrobial effect of studied materials. The childern were divided equally into two groups (fourty five in every group). In the first group childern were instructed to rinse with 3 ml of propolis extract for specific time and divided into three sub groubs while in the other group …


Effect Of Childhood Malnutrition On Salivary Flow And Ph, Doaa Hashem, Samy El-Bayoumy, Wafaa Fahmy, Magda El Malt Apr 2016

Effect Of Childhood Malnutrition On Salivary Flow And Ph, Doaa Hashem, Samy El-Bayoumy, Wafaa Fahmy, Magda El Malt

Al-Azhar Journal of Dentistry

The aim of the present study was to assess the effect of childhood malnutrition on salivary flow rate and pH. Four hundred children between 3-12 years were selected for this study. The children were divided into two main groups according to their nutrition status, Group (A): two hundred children representing the malnourished children, Group (B): two hundred children representing the control group. Within Group (A) Children were further divided into 2 subgroups, subgroup (1): one hundred stunted children and subgroup (2): one hundred underweight children. Every child was subjected to unstimulated and stimulated saliva flow and pH measurements and caries …


The Effect Of Some Common Children’S Drinks On Color Stability Of Nanocomposite And Nanoglass Ionomer, Arwa Ali, Maha Niazy, Magda El Malt Apr 2016

The Effect Of Some Common Children’S Drinks On Color Stability Of Nanocomposite And Nanoglass Ionomer, Arwa Ali, Maha Niazy, Magda El Malt

Al-Azhar Journal of Dentistry

The purpose of this study was to evaluate the effect of some common children’s drinks on color stability of nanocomposite and nanoglass ionomer. A hundred test specimens of two restorative materials (Filtek Z350; 3M and Ketac N100; 3M wereprepared using a Teflon mold (8x2 mm). Baseline measurements of color and surface roughness of each specimen were made and specimens (n=10) were immersed in 5 groups: G1: orange juice, G2: guava juice, G3: Strawberry milk; G4: Chocolate milk, and G5: Distilled water (control. Final measurements of color and surface roughness were performed and the results submitted to statistical analysis (2-way ANOVA, …


Influence Of Mixing Methods, Special Trays And Storage Time On The Accuracy Of Two Elastomeric Impressions, Noha El Tawiel, Mohamed El-Hossary, Eman Essam Apr 2016

Influence Of Mixing Methods, Special Trays And Storage Time On The Accuracy Of Two Elastomeric Impressions, Noha El Tawiel, Mohamed El-Hossary, Eman Essam

Al-Azhar Journal of Dentistry

This in-vitro study investigated the dimensional accuracy and stability of polyether and polyvinylsiloxane impression materials. The study included the effect of mixing methods where conventional mix versus auto-mixing technique, the effect of special tray on the accuracy of impression and pouring the impressions at different times of storage (1hour, 48 hours and 7 days). Impressions were made for a master model cast of mandibular arch with two prepared abutments; right second premolar and right second molar with a shoulder finish line made as to give a definite margin that was easilydefined where there was an occlusal shoulder and gingival shoulder …


Evaluation Of Caries And Periodontal Status In A Group Of Diabetic Egyptian Children, Noura Mohammed, Osama El-Shall, Magda El-Malt, Noura Badawy Apr 2016

Evaluation Of Caries And Periodontal Status In A Group Of Diabetic Egyptian Children, Noura Mohammed, Osama El-Shall, Magda El-Malt, Noura Badawy

Al-Azhar Journal of Dentistry

The present study was carried out to evaluate the dental and periodontal status in a group of Insulin dependent Egyptian children and this was accomplished clinically and microbiologically. One hundred diabetic children represented by group 1 with age range 6-14 years who had selected from out-patient clinic of Abo EL-Rish , Endocrine department of faculty of medicine, Cairo university. And ten healthy chidren represented by group 2 with the same age range, were selected from those who referred to the out-patient Pediatric clinic of faculty of dental medicine, Al-Alzhar University,Girls branch. In this study dental examination was done by using …


Effect Of Flexible Denture Base On Retention Of Complete Denture, Dina Hssan, Mohamed Sanad, Shereen Kabeel Apr 2016

Effect Of Flexible Denture Base On Retention Of Complete Denture, Dina Hssan, Mohamed Sanad, Shereen Kabeel

Al-Azhar Journal of Dentistry

Aim of the study: to evaluate the effect of flexible denture base materials on retention of complete denture.Material & methods: Seven completely edentulous patients with age ranged between 45 and 55 years were selected for this study. Complete conventional heat cured acrylic resin dentures were constructed for all patients .The retention was evaluated after one and three months from dentures delivery. Another set of flexible denture base was constructed for all patients then the retention were evaluated after one and three months from denture delivery.Results: The result of the study revealed that there were statistically significant differences in the retention …


Influence Of Adhesive On Shear Bond Strength Between Denture Base Materials And Self-Cured Silicon Soft Liner, Mohamed Ebrahim, Mohamed Ahmed, Mostafa Fayad Apr 2016

Influence Of Adhesive On Shear Bond Strength Between Denture Base Materials And Self-Cured Silicon Soft Liner, Mohamed Ebrahim, Mohamed Ahmed, Mostafa Fayad

Al-Azhar Journal of Dentistry

Background: Soft lining materials play an important role in modern prosthodontics because of their capability of restoring health of inflamed and distorted mucosa. Gradual changes of oral tissues require that complete or partial dentures be relined to improve their adaptation to the supporting tissue. This study aimed to evaluate the shear bond strength (SBS) of heat cured acrylic and injection-molded ValplastTM denture base materials to silicone self-cure soft lining materials, with and without adhesive, after storage in two different times in artificial saliva. Materials and Methods: 40 rectangularspecimens were prepared from two types of self-cured silicone soft lining material,one with …


Effect Of Laser Treatment, Self-Adhesive Resin Cement Brand And Thermocycling On Push Out Bond Strength Of Fiber Reinforced Post, Mariem Abu El-Nour, Eman Essam, Mohsen Nour Eldeen, Ahmed Abbas Apr 2016

Effect Of Laser Treatment, Self-Adhesive Resin Cement Brand And Thermocycling On Push Out Bond Strength Of Fiber Reinforced Post, Mariem Abu El-Nour, Eman Essam, Mohsen Nour Eldeen, Ahmed Abbas

Al-Azhar Journal of Dentistry

The interface between the adhesive resin and fiber posts has an important role in their performance. However, It was found that the most frequent cause of their failure is debonding at the adhesive resin-dentin interface. The aim of the present study was to evaluate the effect of laser treatment: Erbium, Diode or no treatment; and two brandsof self-adhesive resin cement: hydrophobic (Smartcem2) and conventional (Breeze); in addition to the effect of thermocycling on push out bond strength of Glassix fiber- reinforced composite post. A total of ninety- six freshly extracted natural human teeth were equally divided into three main groups …