Dentistry Commons^™

Prevalence And Oral Hygiene–Related Correlates Of Self-Reported Dentin Hypersensitivity Among Egyptian Adults: A Cross-Sectional Study, Dalia Ghalwash, Ahmed Hamdy, Ahmed Ammar, Shehad Wael, Alhassan Diab

Dentistry

Abstract

Background

Dentin hypersensitivity (DH) is a prevalent clinical condition characterized by pain arising from exposed dentin in response to external stimuli. Despite its clinical relevance, epidemiological data from Egypt and the Middle East remain limited. This study aimed to assess the prevalence, symptom characteristics, and oral hygiene-related correlates of self-reported dentin hypersensitivity among Egyptians adults.

Methods

A cross-sectional questionnaire-based study was conducted among 370 Egyptian adults recruited from multiple governorates between January and August 2025. Data was collected using a structured questionnaire that underwent expert review, pilot testing, and reliability assessment. Information regarding self-reported dentin hypersensitivity, triggering stimuli, oral …

Prevalence Of Oral Mucosal Lesions Among Smokers Based On Gender: A Bicentric Cross-Sectional Study In Egypt, Dalia Ghalwash, Fatheya Zahran

Dentistry

Abstract

Background

Smoking is a major risk factor for developing various types of oral mucosal lesions (OMLs), including benign and potentially malignant lesions. However, scarce data is available concerning gender differences regarding the prevalence of oral mucosal lesions in smokers worldwide. Accordingly, this study assesses the prevalence and types of OMLs among male smokers compared to female smokers in an Egyptian population.

Methods

This hospital-based cross-sectional study included 300 male and 300 female smokers. All participants underwent a thorough case history review and a comprehensive clinical examination.

Results

The overall prevalence of oral lesions was significantly higher in males (75%) …

Dentists’ Acceptance Of Artificial Intelligence-Assisted Decision Support For Oral Potentially Malignant Disorder Detection: A Structural Equation Modeling Study, Dalia Ghalwash

Dentistry

Abstract

Artificial intelligence (AI) may support early detection and clinical decision-making of oral potentially malignant disorders (OPMDs), but clinical implementation depends on dentists’ acceptance of AI-assisted clinical decision support. This study aimed to identify structural associations of AI acceptance among dentists using an extended Technology Acceptance Model (TAM). A cross-sectional survey was conducted among 500 dentists. Construct validity and reliability were assessed using confirmatory factor analysis. Hypothesized associations were evaluated using structural equation modeling with bootstrap mediation analysis. The extended TAM showed generally satisfactory measurement properties and good overall model fit. Attitude toward AI showed the strongest association with behavioral …

When Drug Repurposing Backfires: Antagonistic Effects Of Ivermectin On Cisplatin Therapy In Oral Cancer, Dalia Ghalwash, Rana Tantawy, Shereen Nader, Ayman Elgawish

Dentistry

Abstract

Background

Cisplatin (CIS) remains the gold standard chemotherapeutic agent for the management of oral cancer. However, its clinical efficacy is frequently limited by chemoresistance and dose-dependent toxicities. Ivermectin (IVM), a well-established antiparasitic agent with emerging anticancer properties, has been proposed as a potential adjuvant capable of enhancing the antitumor efficacy of CIS.

Methods

In vitro experiments were conducted on HN9 oral squamous cell carcinoma cells, while OEC normal epithelial cells served as control. The experimental evaluation comprised the MTT assay for cell viability, Annexin V/propidium iodide (PI) staining for apoptosis detection, cell cycle distribution analysis, quantitative real-time PCR (RT-qPCR) …

Clinical Evaluation Of The Remineralizing Potential Of Biomimetic Scaffolds On Enamel White Spot Lesions: A 12-Month Randomized Controlled Trial, Eman Soliman, Wegdan Abdelfattah, Doaa Ragai M Ahmed, Dina Nagui, Ahmed Holiel

Dentistry

No abstract provided.

Stress Distribution In Different Toothimplant Supported Mandibular Prostheses Rehabilitating Unilateral Free-End Saddle: A Biomechanical Comparative Finite Element Study, Maha Nagy Kamal, Haytham Amr Mohammed, Abdallah Shokkry

Dentistry

Abstract Aim of the study Utilizing Finite Element Analysis, this research biomechanically assessed three prosthetic designs for mandibular unilateral free-end saddle, specifically interrogating the magnitude and distribution of stresses transmitted to the terminal anterior abutment and the supporting posterior implant. Materials and methods A mandibular unilateral free-end saddle educational cast, with the first premolar as the last standing abutment tooth, was used. The abutment teeth of the free end saddle side were prepared to accommodate two splinted crowns. Then the cast was scanned, and an implant analogue was digitally inserted at the second molar area using Blender4dental software. Three different …

Evaluation Of Periodontal Parameters Among Infertile Men Undergoing Periodontitis Treatment: A Retrospective Study, Dalia Ghalwash, Rim Ghanem, Mazen Ghanem, Manal Safan, Ahmed Ghanem

Dentistry

Background and Objectives: Periodontitis has been linked to idiopathic male infertility and impairment of semen values. However, data on the role of periodontal treatment in sperm parameter outcomes as well as the identification of the value of clinical periodontal infection predictors (BOP, PD, and CAL) as composite measures following active periodontitis therapy are limited. This study aimed to evaluate the role of periodontitis treatment in infertile men and its impact on semen quality. Methods: 58 infertile patients with semen abnormalities underwent treatment of periodontitis. Clinical periodontal and andrological examinations were conducted for all participants. Clinical periodontal parameters (PD, BOP, and …

The Effects Of Cigarette Smoke And Heated-Tobacco Aerosol On Streptococcus Mutans Adhesion And Surface Topography Of Dental Hard Tissues In Vitro, Mahmoud Bakr, Mohamed Shamel, Mahmoud Al Ankily

Dentistry

No abstract provided.

Bone Dimensional Stability With Versus Without A Stent Following Apically Repositioned Flap And Single-Stage Implant Placement: A Randomized Clinical Trial, Dalia Ghalwash, Ahmed Hamdy, Jazia Alblowi

Dentistry

Abstract Maintaining peri-implant bone and tissue health is essential for long-term implant success. The effectiveness of adjunctive stent stabilization is still unclear, though the apically repositioned flap (ARF) improves soft tissue conditions. Therefore, this study assessed whether the use of stents during single-stage placement improves peri-implant bone changes and clinical outcomes following ARF. This randomized clinical trial included twenty partially edentulous patients who were divided into two groups: ARF with stent stabilization (n = 10) and ARF using conventional suturing (n = 10). At baseline, three months, and six months, radiographic bone dimensions measured by cone-beam computed tomography (CBCT) were …

Reproductive Hormones And Semen Quality Among Fertile Adults With And Without Periodontitis: A Crosssectional Study, Dalia Ghalwash, Rim Ghanem, Mazen Ghanem, Manal Safan, Ahmed Ghanem

Dentistry

No abstract provided.

Impact Of Adhesive Curing Mode And Dentin Sealing On Bond Strength Of Cad/Cam Resin Composite, Sara Adel Botros, Mohamed Fouad Haridy, Nermin Mohieldin Abdelmohssen

Dentistry

No abstract provided.

Evaluation Of The Efficiency Of Directly Printed Shape Memory Vs Thermoformed Shape Memory Orthodontic Aligners, Ahmad Mohammad Elshennawy, Noha Ibrahim Abdelrahman, Islam Tarek Hassan

Dentistry

Aim: The aim of this randomized clinical trial is to evaluate the efficiency of directly 3D printed shape memory aligners (TC-85 DAC resin, Graphy Inc, South Korea) vs thermoformed shape memory aligners (Clear X, K line Europe GmbH headquarters).

Methodology: 20 adult patients were included in this study complaining from 2-8 mm crowding in lower anterior region, 10 of them were treated using directly 3d printed clear aligners (4 males, 6 females), and the other 10 were treated using thermoformed shape memory aligners (5 males, 5 females). With mean age 24 years. Digital superimposition was performed using Geomagic control …

Clinical Evaluation Of Ozone Gel Versus Hyaluronic Acid Gel On Palatal Wound Following Free Gingival Graft Harvesting: A Randomized Clinical Trial, Hisham Tarek, Nesma Shemais, Dalia Ghalwash, • Ahmed El Barbary

Dentistry

Objective: This randomized clinical trial (RCT) compares the effectiveness of ozone gel (GeliO3) and hyaluronic acid (HA) gel(Gengigel) in enhancing wound healing and reducing postoperative discomfort following free gingival graft (FGG) harvesting.Methods: Fifty-six patients requiring FGG for mucogingival defects were randomly assigned into two groups: the ozone gel group and the HA gel group. The primary outcome was postoperative pain, assessed using the visual analog scale (VAS) and analgesic consumption. Secondary outcomes included wound healing, evaluated using the Landry healing index, and color match assess-ment. Data were analyzed using appropriate statistical tests with a significance level of p< 0:05.Results: Both treatment groups exhibited significant pain reduction over time (p< 0:001). Although there was no statistically significant difference between the groups, a faster decline in pain was observed in the ozone group by Day 3. Analgesic consumption was significantly lower in the ozone group on Days 2 and 3 (p ¼ 0:042). The healing index and color match scores showed a steady improvement in both groups, with the ozone group demonstrating slightly higher values at various time points, though not statistically significant.Conclusion: Both ozone gel and HA gel effectively enhanced post-FGG healing, reduced pain, and improved tissue esthetics.Ozone therapy showed potential advantages in early pain relief and lower analgesic dependence. These findings suggest that ozonetherapy may serve as an alternative or adjunctive treatment for palatal wound management in periodontal surgery. Furtherresearch is needed to confirm its clinical superiority over HA gel.

Automated Assessment Of Periapical Health Based On The Radiographic Periapical Index Using Yolov8, Yolov11, And Yolov12 One-Stage Object Detection Algorithms, Shehabeldin Mohamed Saber Prof.Dr., Ahmed A. Torky Phd

Dentistry

This study investigates the application of recent YOLO (You Only Look Once) algorithms for automated detection and classification of apical periodontitis using the Periapical Index (PAI) scoring system (1–5). A dataset of 699 digital periapical radiographs was collected from diverse sources, de-identified, and annotated by calibrated experts before splitting into training, validation, and testing sets. Three deep learning models (YOLOv8m, YOLOv11m, YOLOv12m) were trained and their performance was evaluated using Precision, Recall, F1 score, mean average precision (mAP50), Intersection over union (IoU), and confusion matrices. Two-sided McNemar’s exact test was further conducted to compare models on lesion-level outcomes. The results …

Comparative Evaluation Of Maxillary Partial Denture Frameworks Additively Manufactured With Different 3d Printing Techniques, Basma Refaat Fayad, Islam Heiba Dr, Eman Gamal Abdelghaffar, Ayman Hany Amin

Dentistry

Objectives: To compare the accuracy of fit, surface roughness, and microstructure of cobalt chromium (Co-Cr) maxillary removable partial denture (RPD) frameworks fabricated using direct metal laser melting (DMLS) and selective laser melting (SLM). Methods: A custom Kennedy Class II maxillary partial edentulous resin model was digitally scanned, and a virtual RPD framework was designed. Frameworks were fabricated using DMLS (Co-Cr, n = 8) and SLM (Co-Cr, n = 8), while a control group was produced using a hybrid digital-conventional protocol by lost-wax casting (CAST-Co- Cr, n = 8), in total 24 frameworks. Overall and point comparison adaptation was assessed using …

Low Dose Cone Beam Computed Tomography Versus High Dose Cone Beam Computed Tomography In Measuring Furcation Involvements: (Diagnostic Accuracy Study), Marwa Ezz, Cairo University, Misr University For Science & Technology

Dentistry

Accurate diagnosis of furcation defect is essential in periodontal therapy planning. Cone beam computed tomography (CBCT) provides three-dimensional visualization, but higher radiation doses remain a concern. This study aims to assess and compare the diagnostic accuracy of low-dose CBCT (LD-CBCT) and high-dose CBCT (HD-CBCT) in detecting and measuring furcation defect using a pig mandible. Detection and accurate assessment of periodontal disease is important to determine the tooth prognosis and treatment. Radiographic assessment provides information about the pattern and extent of the furcation defect. CBCT provides unique 3D images used for diagnosis and treatment plans, but its use in periodontology not …

Remineralization Effect On Enamel Physicochemical Properties After Chlorine-Induced Erosion, Sara Adel Botros, Mohamed Samy Salama, Mahmoud Al Ankily, Nora Ahmed Alzayyat

Dentistry

No abstract provided.

Color Stability Of Enamel Exposed To Chlorinated Water After Remineralization, Sara Adel Botros, Mohamed Samy Salama, Mahmoud Al Ankily, Nora Alzayyat

Dentistry

No abstract provided.

Effect Of Sdf Application Versus Diode Laser Irradiation On Incipient Carious Lesion’S Progression In Primary Molars: A Randomize Clinical Trial, Islam Yehia, Noha Samir Kabil, Basma Gamal

Dentistry

The present study aimed to investigate the effect of two different preventive measures a) Silver diamine (SDF) application, b) Diode laser irradiation, on caries progression of incipient carious occlusal lesions in primary second molars. This clinical trial included two equal study groups of patients, for applying; Group I: SDF application, Group II: Diode laser irradiation, the included second primary molars for intervention were selected with incipient carious lesions graded by International Caries Detection & Assessment System (ICDAS)with scores (0,1,2). The involved molars were followed up for 3, 6, 12 months and ICDAS scores were graded to check for caries progression …

Effect Of Acid-Containing Drinks On Surface Roughness And Bacterial Accumulation Of Different Types Of Denture Base Materials, Sara Fikry Dr, Ayman Amin, Eman Khedr, Fatma Makkeya

Dentistry

No abstract provided.

Biomechanicalperformanceofimplant-Tooth-Supportedprostheses:Anumerical3dfiniteelementanalysis, Basma Refaat Fayad, Islam Heiba Dr, Al Hassan Diab

Dentistry

Objective:Toassessthebiomechanicalbehaviourofimplant-tooth-supported(hybrid)pros-theses,comparedwithanimplant-implant-supportedprosthesis,utilisingtwodifferentprostheticmaterials,employingfiniteelementanalysis(FEA).Method:Threedigitalmodels,derivedfromaCBCT-scannededentulousmandible,weredesigned:twohybridconfigurations(M1:distalimplant-firstpremolar;M2:mesialimplant-firstmolar)andanimplant-implant-supportedprosthesis(M3).Abiomechanicalmodellingworkflowwascarriedout(Mimicsforsegmentation,3-Maticforbone/mucosallayerrefinement,ExocadDentalCADandSolidWorksforimplants,abutmentandprosthe-sisintegration,andANSYSformeshingandFEA).Assumingisotropic/elasticmaterialproperties,zirconiaandpolyetherketoneketone(PEKK)wereselectedasprostheticmateri-als.Modelsweresubjectedtoastaticverticalload(100N).vonMisesstressandtotaldefor-mationwereanalysedtoevaluatestructuralresponses.Results:M3demonstratedthemostfavourablebiomechanicalprofile,exhibitingthelowestvonMisesstressmagnitudesalongsidethehighestoveralldeformation.Inhybridmodels(M1,M2),stressmaximawerelocalisedatthepontic−toothconnectorregionsand,inM1-PEKK,reached261MPainthescrew.Corticalboneandpreparedteethexhibitedhigherstressindis-tallyanchoredhybridsystems(M1)comparedtomesiallysupporteddesigns(M2),regardlessoftheprostheticmaterial.Comparativeanalysisrevealedthatzirconia-basedprosthesesgen-eratedhigherstressconcentrationsinbone(≤35MPa)comparedtoPEKK,whereasthePEKKprosthesisitselfexhibitedgreaterstructuraldeformation(70mminM1-PEKK).Conclusion:Hybridimplant-tooth-supportedprosthesescanactasareliablealternativetoimplant-implantonesandeliminatecantileverextensions;however,theiruseshouldbereservedforcarefullyselectedcasestoavoidbiomechanicalincompatibilities.

Prevalence Of Oral Mucosal Lesions Among Geriatric Dental Patients In Egypt: A Cross-Sectional Study, Dalia Ghalwash, Ahmed Hamdy, Sara Abd El-Wahed

Dentistry

Background. The oral health needs of older adults must be prioritized due to the shifting demographics of the population and rising life expectancy. This study investigated the prevalence of oral mucosal lesions (OMLs) among geriatric dental patients in a sample of the Egyptian population and explored the association with age, gender, smoking habit, as well as the impact on the quality of life. Methods. This cross-sectional study screened 300 geriatric dental patients aged 65 years or older, from several dental hospitals and mobile clinics in various regions in Egypt. Demographic data and information regarding denture use, systemic diseases, and smoking …

Enhancing Severely Compromised Premolar Strength: Role Of Cusp Reduction Design In Cad/Cam Composite Restorations, Hend Sayed Ahmed, Mohamed Fouad Haridy, Ahmed Refaat Mohamed, Shehabeldin Saber, Edgar Schafer, Samar Swelam, Youssef Mohamed Haridy

Dentistry

No abstract provided.

Does Ultrasound Guidance During Arthrocentesis In Women With Disc Displacement Without Reduction Reduce Procedure Time And Improve Outcomes? A Randomized Clinical Trial, Moataz Dr. Bahaa, Abdelrahman Fahmy Dr., Hisham Elsheikh Dr., Bassam Abulnoor, Amr Amin Prof., Sherif El Bahnasy, Karim Abdelmohsen Prof

Dentistry

Introduction: The goal of using ultrasound-guided (USG) arthrocentesis is to reduce number of needle insertion attempts, which is hypothesized to reduce procedure time, postoperative pain, and consequently, limitation in range of motion. Purpose: The objective of this study was to compare the therapeutic and operative efficiency of USG Single-Puncture Arthrocentesis (SPA) Type 2 and SPA Type 2 arthrocentesis without ultrasound guidance in the treatment of temporomandibular joint (TMJ) internal derangement (ID) “disc displacement without reduction (DDWOR).” Materials and methods: A double-blinded prospective randomized clinical trial (RCT) was conducted from December 2022 to December 2023 at Ain Shams University Hospital. It …

Centering And Shaping Abilities Of Three Different Cross-Section Rotary Systems In Curved Canals Using Cbct, Sherif Shafik

Dentistry

ABSTRACT The aim of the study was to examine the centering and shaping abilities of the E3 Azure, T Blue and XPRS rotary devices in severely curved root canals utilizing CBCT. 51 mesial roots were used in this study, then distributed into three groups of 17 mesial canals each according to the instrumentation technique: T-Blue, E3 Azure and XPS. The final apical size of instrumentation was 30/0.04 for all groups. At 2 mm, all pairwise comparisons were statistically significant, with Azure showing the highest transportation, followed by T-Blue, and XPS showing the least (p< 0.001). At 4 mm and 6 mm, Azure and T-Blue showed significantly higher transportation than XPS (p< 0.001). For XP-Shaper files, centering ratios followed a descending order from 6 mm to 4 mm and were lowest at 2 mm, with all pairwise comparisons being statistically significant (p< 0.001). it was concluded that XPS show lesser transportation and better centering ability.

Centering And Shaping Abilities Of Three Different Cross-Section Rotary Systems In Curved Canals Using Cbct, Muhammed Ahmed Omar Abouel Seoud Phd, Maha Nassar

Dentistry

he aim of the study was to examine the centering and shaping abilities of the E3 Azure,T Blue and XPRS rotary devices in severely curved root canals utilizing CBCT. 51 mesial rootswere used in this study, then distributed into three groups of 17 mesial canals each according to theinstrumentation technique: T-Blue, E3 Azure and XPS. The final apical size of instrumentation was30/0.04 for all groups. At 2 mm, all pairwise comparisons were statistically significant, with Azureshowing the highest transportation, followed by T-Blue, and XPS showing the least (p< 0.001). At 4mm and 6 mm, Azure and T-Blue showed significantly higher transportation than XPS (p< 0.001).For XP-Shaper files, centering ratios followed a descending order from 6 mm to 4 mm and werelowest at 2 mm, with all pairwise comparisons being statistically significant (p< 0.001). it wasconcluded that XPS show lesser transportation and better centering ability (PDF) Centering and Shaping abilities of three different cross-section rotary systems in …