Other Dentistry Commons^™

Molar Macrowear As A Proxy For Age In A Captive Sample Of Papio Hamadryas, Lauren Conrad

Biological Sciences Undergraduate Honors Theses

This study is methods-focused, centering around molar crown macrowear and its performance as a proxy for age in a sample of pedigreed, non-human primates. It analyzes the correlation between age-structured variables and molar wear among both males and females in a captive group of baboons. Here, I examined whether wear is significantly correlated with age-related variables (i.e., generations/cohorts) and whether the structure of the “age” dataset differed across wear categories. Because chronological age is unknown, I used documented pedigrees and parent-offspring relationships to group individuals into possible generations. I then used dental development charts to group individuals into cohorts based …

Root And Root Canal Morphology Of Premolars In A Sample Of The Lebanese Population: Clinical Considerations, Marie-José Merhej, Roula El Hachem, Hala Sacre, Pascale Salameh, Nabil Ghosn, Alfred Naaman

International Arab Journal of Dentistry

ABSTRACT

Objectives: The aim of this study was to investigate the anatomy of the maxillary and mandibular premolars among a sample of the Lebanese population and to explore their incidence by sex and the symmetry between the left and right sides. Materials and Methods: This retrospective analysis of 250 cone-beam computed tomography (CBCT) scans consisted of 960 maxillary and 972 mandibular premolars. Roots, canals, and morphology types were recorded. Vertucci’s classification was used to categorize the canal morphologies. Fisher’s exact and chi-square tests (P≤.05) were applied.

Results: The majority of maxillary first premolars had two roots (85.3%) with two …

The Effect Of Fluorouracil On Pathogenic And Non-Pathogenic Oral Microorganisms And Microbial Interactions With Preventative Measures: A Preliminary Study, Valeria Ortiz Jimenez, Lynn Lewis

Student Research Submissions

Cancer chemotherapy compromises the patient’s oral health through dysbiosis of oral microbiota and increases the prevalence of dental cavities, gingivitis, oral mucositis, and xerostomia. This research aimed to evaluate the effect of a common chemotherapeutic agent, Fluorouracil (5-FU), on certain microorganisms that are common within the oral cavity. Varying concentrations (50 μM, 75 μM and 100μM) of 5-FU were used to simulate the dosage that reaches the oral cavity after intravenous delivery. The microorganisms tested were Pseudomonas aeruginosa, Staphylococcus aureus, Enterococcus faecalis, Streptococcus mutans, Lactobacillus rhamnosus and Streptococcus salivarius. These are some of the most common ones found in the …

Special Needs In Pediatric Dentistry, Emma Kail

Health and Exercise Physiology Presentations

Over the summer of 2022 I got the chance to work on my internship at a special needs and non special needs focused dentistry. Through this presentation I focus mainly on the pediatric special needs aspect of the dental care given to patients. Throughout the poster I speak about the importance of special needs care within dentistry and the field of dental health itself, where I worked and how they accommodated and worked with those with special needs to give the best care possible, and finally how this experience has changed my goals set for my future, especially within the …

Evaluation Of Different Indirect Pulp Treatment Materials Used In Deep Carious Primary Molars, Aya Ali, Samy El-Bioumy, Mohammed Mostafa

Al-Azhar Journal of Dentistry

Purpose: To evaluate the clinical and the radiographic outcomes of indirect pulp treatment (IPT) in primary molars using Calcium Hydroxide, Resin Modified Glass Ionomer and TheraCal LC. Subjects and Methods: Sample of 45 children aged from 4-8 years with deep carious one or more primary molars allocated randomly into 3 groups according to the capping material. Group I: Calcium Hydroxide (Dycal). Group II: Resin Modified Glass Ionomer (Vitrebond) and Group III: TheraCal LC. Teeth were treated then restored with EQUIA Forte HT in one visit and evaluated clinically and radiographically after three and six months. Results: The overall clinical and …

Remineralization Effect Of Two Types Of Varnishes On Induced Enamel Caries, Abeer Tageldin, Magda El-Malt, Sara Hashem

Al-Azhar Journal of Dentistry

Purpose: to assess the remineralization capacity of MI varnish and Bifluorid 10 varnish on induced white spot lesions in deciduous enamel, using Scanning Electron Microscope- Energy Dispersive X-ray. Materials and methods: Sixty human caries-free deciduous teeth were collected. The teeth were stored in 0.1% thymol solution. A 4*4*2 window was created on the buccal surface of each tooth using acid-resistant nail varnish. Samples were then divided into 3 groups according to the remineralizing agent used, each group containing 20 teeth. Group I was remineralized with MI varnish, group II was remineralized using Bifluorid 10 varnish, while group III was a …

Transverse Skeletal Effects Of Hyrax-Type Rapid Maxillary Expansion With Or Without Laser Biostimulation, Hadeel Hamed, Ahmed Salama, Hend Hafez, Mai Mansour, Mostafa Gheith

Al-Azhar Journal of Dentistry

ABSTRACT Purpose: The aim of this study is to assess the effect of Laser biostimulation on the transverse changes of maxilla and mandible after rapid maxillary expansion in growing patients. Subject and Methods: Twenty growing patients with posterior teeth in crossbite were included in this study. Patients were randomly divided into two groups. Rapid maxillary expansion had been carried out for all patients. In laser group Laser was applies on mid palatal suture during active expansion and during retention. The control group had no laser with their expansion procedures. Pre-treatment and post-treatment Cone beam computed tomographies were used to compare …

Clinical And Microbiological Evaluation Of Smartprep Burs In Caries Removal In Primary Teeth, Asmaa Faiek, Mohamad Mostafa, Samy Al-Bauomy

Al-Azhar Journal of Dentistry

Purpose: To evaluate the efficacy of smartprep burs in caries removal in primary teeth clinically and microbiologically, also to assess the time taken for caries removal and the pain perception experienced by children compared with conventional carbide burs and sharp spoon excavator. Materials and Methods: A total of 51 teeth from children ranging from 4 -9 years old of both sexes, were selected for this study after they met inclusion criteria. The teeth were randomly assigned to three groups, seventeen teeth for each group. The patients were recalled at 1, 6 weeks and 3 months for clinical evaluation. Results: Microbiologically …

Comparative Study Of Calcium Phosphate Versus Formocresol In Pulp Treatment Of Primary Teeth, Taghrid Mohammed, Mervat Fawzy, Mohamad Mostafa

Al-Azhar Journal of Dentistry

ABSTRACT:Purpose: Clinical and radiographic evaluation of the postoperative success of Calcium Phosphate and formocreosl (FC) materials in pulpotomy treatment of primary teeth. Materials and Method: 75 Primary molars in 25 patients were chosen according to specific criteria. Teeth were devided depending on the pulpotomy material into 3 groups: Group I (Calcium phosphate with physiologic saline cleansing group), Group II (Calcium phosphate with Sodium hypochlorite) and GroupIII (formcresol group). This was followed by clinical follow up after 1, 6 months and a year. In addition, Periapical radiographs were collected post-operatively, 6 and 12 months visits. Results: Despite decreasing with time, the …

Assessment Of The Amount Of Nickel And Chromium Released From Two Types Of Stainless Steel Crowns, Aliaa Aboelnour, Magda El Malt, Eman Mohammed

Al-Azhar Journal of Dentistry

Purpose: Estimate the release of Nickel and Chromium from two types of commercially available stainless steel crowns in artificial saliva. Materials and Methods: Twenty stainless steel crowns of fixed size (lower left E4) from two manufacturers were immersed in 10 ml of artificial saliva and stored in separate tubes in an incubator at 37°C for 21 days. The crowns were removed from each tube on every seven days, and were placed in other tubes with fresh artificial saliva. Flame Type Atomic Absorption Spectrophotometer was used to check for the release of metal ions in the solution inside each tube at …

The Effectiveness Of Educational Mobile Messages On Prevention Of Dental Caries In Group Of Preschool Children, Walaa Elsakkar, Mohamad Mostafa, Sara Hashem

Al-Azhar Journal of Dentistry

Objective: To evaluate the effectiveness of educational messages sent via mobile phones on prevention of dental caries in group of preschool children. Subject and methods: 100 high caries risk children aged between 3 and 5 years from both genders were randomly divided into two groups (n=50) regarding to receiving educational messages: group 1; included children whose parents received educational messages (Test group); group 2; included children whose parents didn’t receive any messages (Control group). Every 14 days the test group received educational messages via Whats Application Messenger (WhatsApp). Visible plaque index (VPI), the decayed, missed, filled (dmf) and the International …

Evaluation Of The Antibacterial Effect Of Licorice Extract On Oral Microflora And Its Effect On Salivary Ph, Zahraa Yosef, Mohamad Mostafa, Safaa El-Sayed

Al-Azhar Journal of Dentistry

Purpose: To evaluate the antibacterial effect of Licorice (as a mouth wash) on total salivary bacterial count in relation to chlorohexidine mouthwash on a group of Egyptian children and assess the effectiveness of Licorice extract rinse on salivary PH. Materials and methods :A total of 60 normal apparently healthy children aged between 6-12 years from both genders were involved in this study and equally divided into four groups(n=15) regarding to the type and concentration of the received mouthwash : group I : included children used licorice extract mouth-rinse (75%), group ІІ: included children used licorice extract mouth rinse (50%), group …

The Effect Of Hyrax-Type Rapid Maxillary Expansion With Or Without Laser Biostimulation On Mid Palatal Suture In Children With Posterior Crossbite, Amina Elalkamy, Fatma Abdelaziz, Ossama Alshal, Hend Hafez, Mosatafa Gheith

Al-Azhar Journal of Dentistry

Purpose: The aim of the following study was to evaluate the use of low-level laser application on the width of the Mid palatal suture (MPS) after rapid maxillary expansion. Materials and methods: patients age range 10 ± 2.5 years were prospectively selected from outpatient clinic of the Orthodontic Department, Faculty of Dental Medicine for Girls, Al-Azhar University (Girls’ Branch). Each patient was examined, full diagnostic records and cone beam computed tomography (CBCT) were taken before appliance cementation (T0), after six months and at the end of retention phase (T1). The hyrax appliance was used for rapid maxillary expansion (RME). The …

Effect Of Different Lateral Condylar Guidance Registration Methods And Articulators On Bilateral Balanced Occlusion Of Complete Denture, Omnia Ahmed, Mostafa Abdel-Ghany, Naglaa Elkilany, Hager El-Sadany

Al-Azhar Journal of Dentistry

Purpose: This study was conducted to accomplish the most balanced occlusion of the complete denture through comparing between lateral condylar guidance angle records of Hanau Equation, Gothic arch tracing and Computed tomography (CBCT) using arcon and non arcon articulators. Materials and methods: Twelve completely edentulous patients were selected for this study, with age ranging from 50-60 years. Selected patients were free from any temporomandibular disorders or dental diseases. Each patient received a complete denture and then duplicated another one for work. With bilateral balanced occlusion concept. The lateral condylar guidance measured using Hanau equation calculated from protrusive interocclusal records, Gothic …

Evaluation Of Different Fabrication Techniques For Reinforcement Of Mandibular Implant-Retained Overdentures, Heba Salama, Nesrin El-Mahrouky, Dina Kholeif

Al-Azhar Journal of Dentistry

Purpose: This study was performed to evaluate the effect of PEEK reinforced mandibular implant overdenture, in comparison with metal reinforced mandibular implant overdenture on bone height. Subjects and methods: Fourteen completely edentulous patients were selected with ages ranging from 50-70 years. All the patients received two implants in the inter-foraminal area of the mandible and maxillary complete dentures, then they were divided into two groups: group (I) seven patients received PEEK reinforced mandibular implant overdentures, group (II) seven patients received metal reinforced mandibular implant overdentures. The overdentures were functionally loaded after three months of implant insertion and retained with the …

Remineralizing Effect Of Diode Laser And Amelogenin Peptide On Early Enamel Carious Lesion, Yasmin Badr, Maha Niazy, Dina El-Kassass

Al-Azhar Journal of Dentistry

Purpose: This study was done to investigate the efficacy of Diode laser andAmelogenin peptide on the remineralization of early enamel carious lesions. Materialsand methods: Artificial carious lesions were created on the buccal and lingual surfacesof 60 enamel specimens. Specimens were assigned to three groups of 20 specimensper each according to the remineralizing protocol: G1 (Diode laser), G2 (Diodelaser + Amelogenin peptide), G3 (Amelogenin peptide). The groups were furtherrandomly subdivided into two groups (n=10) whether specimens subjected to staticremineralization or pH cycling. Surface micro-hardness was assessed at baseline,demineralization and after treatment. Surface microhardness values were analyzed usingone way ANOVA and Tukey’s …

Influence Of Direct And Indirect Digital Data Capturing Techniques On Marginal Accuracy And Internal Fit Of Cad/Cam Fabricated Peek And Zirconia Crowns, Samira Abdel Salam, Atef Ahmed, Nasser Ali

Al-Azhar Journal of Dentistry

Purpose: The aim of this study was to evaluate the marginal and internal fitness of PEEK and Zirconia crowns fabricated by three different impression techniques. Materials and methods: Thirty standardized acrylic die models were prepared. Dies were divided into two main groups (n= 15): Group 1: CAD/CAM fabricated zirconia crowns. Group 2: CAD/CAM fabricated PEEK crowns. Each group was subdivided into three subgroups (n= 5), according to the impression technique using for data acquisition: Sub-group (A): direct digital scans of the model used intraoral digital scanner. Sub-group (B): indirect digital scans of the silicon impressions using extraoral scanner. Sub-group (C): …

Effect Of Rapid Prototyped Complete Denture On Electromyographic Activity, Alia Nour, Mostafa Abdel-Ghany, Shereen Kabeel

Al-Azhar Journal of Dentistry

Purpose: This study was directed to evaluate the electromyographic activity(EMG) of patients with rapid prototyped (RP) complete denture. Subjects andmethods: A total of ten completely edentulous subjects aged between 45-50 years wereselected following specific inclusion criteria from the outpatient clinic of RemovableProsthodontics Department, Faculty of Dental Medicine for Girls, AL-Azhar University.All Patients had received two complete dentures; one constructed by rapid prototypedtechnology and the other constructed by conventional heat compressed method.Patients were classified into two groups, five patients in each. First Group received theRP complete denture first then the conventional complete denture (CCD) while, secondgroup received the (CCD) first then …

Effect Of Aging Treatments On Properties Of Zirconia With Different Levels Of Translucency, Mayar Abdel El-Salam, Sahar Abdel-Aziz, Zahraa Gabal

Al-Azhar Journal of Dentistry

Purpose: The aim of this study was to evaluate the effect of low-temperature degradation(L-TD), and weathering process on translucency, surface roughness, biaxial-flexural strength, and crystalline phase identification of zirconia with different levels of translucency. Materials and methods: A total of ninety-six (N= 96) zirconia discs were fabricated in this study. Samples were divided into three groups (n=32 each) according to type of zirconia: IPS EmaxZirCAD of low, medium translucency and Incoris translucent Zirconia of high translucency. Translucency measurements, surface roughness, biaxial flexural strength determination and phase identification were carried out before and after aging. Each group was then sub-divided into …

Evaluation Of Two Denture Base Material On The Supporting Structures Of Mandibular Tooth Supported Over Denture, Eman Mohammady, Amany Abdel-Fattah, Dina Kholief

Al-Azhar Journal of Dentistry

Purpose: To compare the effect of thermoplastic resin and heat cured acrylic resindenture base materials on pocket depth and bone height around two mandibular caninessupporting mandibular tooth supported over denture. Subject and Methods: Tenpatients having completely edentulous maxillary ridge and bilateral canine in the lowerarch were selected. Root canal treatment and preparation were performed to obtainnon coping abutment with amalgam plugs that covered with over denture. Maxillarycomplete dentures were constructed for all patients. Patients were divided into two equalgroups. Group I: received thermoplastic mandibular over denture. Group II: receivedconventional heat cure acrylic resin mandibular over denture. Clinical and radiographic evaluation …