Cbct Evaluation Of Modified Mini-Implant Aided Trans-Palatal Arch On Maxillary Molar Distalization, Islam Tarek Abbas Hassan Ahmed Prof, Islam Ghorab, Hatem Saifeldin

Dentistry

No abstract provided.

Attenuating Effect Of Vitamin E Against Silver Nano Particles Toxicity In Submandibular Salivary Glands, Mahmoud Bakr, Mahmoud Al Ankily, Sara M. Shogaa, Mohamed Shamel

Dentistry

Open AccessArticle

Attenuating Effect of Vitamin E against Silver Nano Particles Toxicity in Submandibular Salivary Glands

Anatomical Analysis Of Mandibular Posterior Teeth Using Cbct: An Endo-Surgical Perspective, Shehabeldin Mohamed Saber Prof.Dr., Nawar Nawar

Dentistry

Objective: This study sought to analyse the relationship between mandibular posterior teeth and the surrounding anatomical structures. Methods: A total of 170 CBCT images were examined to obtain measurements regarding the following: buccolingual (BL) and mesiodistal (MD) root thickness at the standard level of resection (3 mm from the apex), the thickness of the overlying buccal and lingual bone at the same level, the proximity of the mandibular canal (MC) to the apices of the mandibular posterior teeth, as well as the horizontal location of the mental foramen (MF). Results: The BL root width at 3 mm from the apex …

Cytokeratin Overexpression In Submandibular Salivary Glands Of Rats Treated With Botulinum Toxin And Epidermal Growth Factor, Mahmoud Bakr, Mahmoud Al Ankily, Mohamed Shamel

Dentistry

Botulinum toxin (BTX) is used in different cosmetic and therapeutic procedures. In dentistry, BTX has been used successfully for management of drooling. BTX injection into salivary glands has damaging adverse effects on all components of the gland. Epidermal Growth Factor (EGF) is well known for its regenerative properties. The aim of this study was to investigate the effect of BTX injections on the submandibular salivary glands of adult female Albino rats, when administered solely or in conjunction with EGF through measuring the expression of cytokeratin in the parenchyma of the gland. Sixty rats were used in this study and were …

International Journal Of Dentistry, Ahmed Hamdy, Dalia Ghalwash, Waleed M. Abbas, Hala K. Abd El Gaber

Dentistry

Objectives. This study aimed to clinically assess and compare the width of peri-implant keratinized mucosa following the use of a readymade plastic stent with apically repositioned flap versus conventional apically repositioned flap with papillary sparing incisions during single-stage implant placement protocol. Materials and Methods. A total of 20 patients were enrolled in this study. In the test group, a prefabricated implant-retained stent was clipped on the healing abutment after implant surgery to reposition the keratinized tissue buccoapically. In the control group, simple interrupted sutures were applied instead of using a stent. After the surgical procedure, the width of …

Histological And Ultrastructural Study Of Silver Nanoparticles Toxicity And The Possible Protective Effect Of Vitamin C On Submandibular Salivary Glands Of Albino Rats, Mohamed Shamel, Dalia Riad, Mahmoud Al Ankily

Dentistry

Introduction: Despite silver nanoparticles (AgNPs) beneficial effect in many fields, it has been shown that AgNPs can induce toxic effects. Cytotoxic effect of AgNPs is related to the increased release of reactive oxygen species (ROS) which may lead to cell death. Natural antioxidant scavengers like vitamin C have the capacity to bind and neutralize ROS thus having a vital role in cellular defense against oxidative stress. Objective: The objective of the current study was to assess the cytotoxic impact of AgNPs on the submandibular salivary glands of Albino rats and to reveal the potential antioxidant influence of vitamin C to …

Cone Beam Computed Tomography Versus Intraoral Digital Radiography In Detection And Measurements Of Simulated Periodontal Bone Defects Diagnostic Accuracy Study, Marwa Ezz, Hossam Kandil

Dentistry

Detection and accurate assessmentof periodontal disease is important to determine the tooth prognosis and treatment. Radiographic assessment provides information about the pattern and extent of the alveolar bone loss. Digital radiography has ability to enhance images and make direct measurements. CBCT provides unique 3D images used for diagnosis and treatment plans, but its use in periodontology not well-reviewed as there is few number of studies searched about the role of CBCT in periodontology. We compare digital radiography with CBCTin the detection and measurements of different bone defects. Dry jaws with simulated bone defects were imaged by CBCT and Digital radiography …

Histological And Ultrastructural Study Of Silver Nanoparticles Toxicity And The Possible Protective Effect Of Vitamin C On Submandibular Salivary Glands Of Albino Rats, Mohamed Shamel, Mahmoud Ankily

Dentistry

Introduction: Despite silver nanoparticles (AgNPs) beneficial effect in many fields, it has been shown that AgNPs can induce toxic effects. Cytotoxic effect of AgNPs is related to the increased release of reactive oxygen species (ROS) which may lead to cell death. Natural antioxidant scavengers like vitamin C have the capacity to bind and neutralize ROS thus having a vital role in cellular defense against oxidative stress. Objective: The objective of the current study was to assess the cytotoxic impact of AgNPs on the submandibular salivary glands of Albino rats and to reveal the potential antioxidant influence of vitamin C to …

Effect Of Locally Delivered Melatonin As An Adjunct To Nonsurgical Therapy On Gcf Antioxidant Capacity And Mmp-9 In Stage Ii Periodontitis Patients: A Randomized Controlled Clinical Trial, Enji Ahmed Mahmoud, Olfat Gamil Shaker, Nermin Youssif, Dalia Mohey-Eldien Ghalwash

Dentistry

Objectives. Periodontitis is characterized by inflammatory destruction of periodontal tissue, loss of attachment, and bone resorption. +e increase in reactive oxygen species (ROS) is responsible for the oxidative damage occurring in periodontal tissues. Melatonin has important immunomodulatory, anti-inflammatory, and powerful antioxidant functions. +e current study was carried out to evaluate the effect of topical melatonin gel as an adjunct to nonsurgical periodontal therapy. Methods. +is splitmouth randomized controlled clinical trial was performed on 24 patients with grade II periodontitis. Two sites in each patient were randomly assigned; test sites were treated by nonsurgical therapy followed by intrapocket application of 5% …

Type 2 Diabetes Mellitus And Oral Health Problems Cross-Sectional Study, Asmaa Ras, Eman Khalil

Dentistry

ABSTRACT In Egypt, diabetes mellitus is considered to be a foremost health issue with a major influence on the disease and the rate of death. Diabetes mellitus is a communal disorder having affiliated oral disorders that influence dental care. The purpose of this study was to study the prevalence of oral changes in diabetes type 2 in the Egyptian participants to raise awareness between diabetic patients and dental professionals. Methods: This was a cross-sectional study that was done on 200 patients who were diagnosed with diabetes mellitus type 2 at Diabetes and Endocrinology Clinic in Kasr Al Ainy, Cairo University …

The Effect Of Egf On Vegf Expression On Submandibular Salivary Gland Of Albino Rats Receiving Doxorubicin, Mohamed Shamel, Mohamed Mansy, Rabab Mubarak

Dentistry

Background: Vascular endothelial growth factor (VEGF) has two prominent biological effects of inducing mitogenesis and migration of vascular endothelial cells and to produce permeability on the microvasculature. Epidermal growth factor (EGF), known by its mitogenic activity on different types of cells, could induce the proliferation and differentiation of the epithelial cells and stimulate its regeneration. Doxorubicin (DXR) is a widely used anticancer drug and is one of most commonly used chemotherapeutic drugs, however it may cause some serious complications such as toxicity in various tissues in the body. Aims: The present study aims to investigate the effect of EGF on …

What Do Patients Use For Treating Their Oral Ulcers? And How Do These Treatments Affect Their Quality Of Life?, Enji Ahmed Mahmoud, Ayat Gamal Abdel-Nasser, Mai Zakaria, Sohair Gaafar

Dentistry

Objectives: Oral ulceration forms a major category of oral lesions. Due to its effect on the quality of life, the patients seek treatment using various substances. This study investigated the types of treatments used by a sample of patients having all types of oral ulcers and its positive and negative effects on the patients' lives. Methods: This cross-sectional study included patients having different types of oral ulcers. Participants provided information about their previous treatments, the source of recommendation of its use and side effects linked to them. They filled the oral health impact profile-14 questionnaire to report the change in …

An In Vitro Evaluation Of Surface Roughness, Color Stability And Bacterial Accumulation Of Lithium Disilicate Ceramic After Prophylactic Periodontal Treatment, Fatma Makkeyah, Tarek Salah Morsi, Marwa Mohamed Wahsh, Amr Saleh El-Etreby

Dentistry

Objective: To evaluate the effect of scaling procedures using different ultrasonic tips on the surface roughness, color stability and bacterial accumulation of lithium disilicate ceramic. Material and Methods: Scaling procedure was carried out using ultrasonic scaler (Satalec, Acteon, North America) with stainless-steel tip (US), titanium tip (UT) and plastic tip (UP), on disc shaped lithium disilicate samples cemented into a cavity prepared onto the labial surface of freshly extracted bovine teeth (10 samples per group). The samples were stored in coffee solution in an incubator at 37°C for 12 days, which is equivalent to 1 year of coffee consumption. The …

Evaluation Of Anti-Cancer Effect Of Different Concentrations Of Black Raspberries Extract On Oral Squamous Cell Carcinoma Cell Line (In Vitro Study), Sara Abdelwahed

Dentistry

Background: Black Raspberry has a wide range of pharmacological and therapeutic aspects including anti-inflammatory and antioxidant activities. Moreover, the effect of Black Raspberry has been studied in many cancers such as human cervical, esophageal and colorectal cancer and showed cytotoxic and anti-proliferative effects against these types of cancer. Aim: To identify the possible anti-cancer effect of Black Raspberry on Oral Squamous Cell Carcinoma cell line. Material and methods: Human tongue squamous cell carcinoma cell line was divided into 3 groups: one control group, second group treated with Black Raspberry, and the third group treated with Doxorubicin, each of the two …

Pre-Heating Of Dual-Polymerized Resin Core Foundation System: Effect On Micro-Shear Bond Strength, Degree Of Conversion And Ultimate Tensile Strength, Sara Adel Botros

Dentistry

This study evaluated the effect of pre-heating a dual-polymerized adhesive and a dual-polymerized core build-up resin composite on their dentin micro-shear bond strength (mSBS), degree of conversion (DC%) and ultimate tensile strength (UTS). For mSBS, 45 human molars were divided into 9 groups (n ¼ 5) according to two factors: (1) Adhesive temperature (25 C/32 C/40 C) and 2- Resin composite temperature (25 C/32 C/40 C). Dual-polymerized adhesive (Futurabond U/FBU) was applied over occlusal dentin at each temperature following the manufacturer’s instructions. Four dual-polymerized composites (Rebilda DC/RDC, VOCO) micro-cylinders (1.2 mm diameter 1 mm height) were built-up over each dentin …

In Vitro Evaluation Of Material Dependent Force Damping Behavior Of Implant-Supported Restorations Using Different Cad-Cam Materials And Luting Conditions, Ahmed Sabet

Dentistry

Statement of problem. Although force-damping behavior that matches natural teeth may be unobtainable, an optimal combination of crown material and luting agent might have a beneficial effect on the force absorption capacity of implant-supported restorations. However, the force-absorbing behavior of various restorative materials has not yet been satisfactorily investigated. Purpose. The purpose of this in vitro study was to evaluate the material dependent force-damping behavior of implant-supported crowns fabricated from different computer-aided design and computer-aided manufacturing (CAD-CAM) materials luted to implant abutments under different conditions. Material and methods. Titanium inserts (N=84) were screwed to implant analogs, scanned to design zirconia …

Effect Of Different Preparation Depths For An Inlay-Retained Fixed Partial Denture On The Accuracy Of Different Intraoral Scanners: An In Vitro Study, Ahmed Sabet

Dentistry

Purpose: The aim was to evaluate the effect of different preparation depths for inlayretained fixed partial dentures on the accuracy of intraoral scanners. Materials and Methods: Tooth preparations for two inlay-retained fixed partial dentures were done and divided according to depth of the preparation. Group A: 2 mm pulpal floor depth, 3 mm gingival floor depth and Group B: 3 mm pulpal floor depth, 4mm gingival floor depth. The CEREC Omnicam 4.4.4, Omnicam 4.6.2. Trios3 and Medit i500 intraoral scanners were used in this study. Tooth preparations were scanned by each scanner 10 times. The STL files obtained from the …

Accuracy And Repeatability Of Different Intraoral Instruments On Shade Determination Compared To Visual Shade Selection, Ahmed Sabet

Dentistry

Objective: To evaluate the accuracy and repeatability of intraoral instruments used for shade determination compared to visual shade selection (VSS). Materials and Methods: A total of 20 subjects and 10 observers, balanced by gender, participated in the study. Observers performed VSS of the upper right central incisor from each subject. Instrumental shade determination of the same teeth was performed using a spectrophotometer (Easyshade V) and intraoral scanners (CEREC Omnicam, Primescan, Trios 3 and Trios 4). Vita Classical shade nomenclature was used to record the shade designation for all instruments and VSS. The accuracy of the instruments was determined by comparing …

The Effect Of Different Drilling Protocols On Bone Healing Around Dental Implants., Sara Fikry, Amr Amin Ghanim, Hisham El Sheikh, Omar El Sergany

Dentistry

Materials and Methods: 20 patients with kennedy class III modification 1 edentulous areas were recruited for this study and divided into two groups; Control group received implants with conventional osteotomy preparation following standard drilling protocol (speed= 1200 rpm) with torque of 30N and sufficient saline irrigation, while Study group received implants with osteotomy preparation following a low speed drilling protocol (speed < 200 rpm) without irrigation and a torque of 50 N. Cone Beam CT was used to evaluate bone height and density around the implants at 3, 6 and 12 months after insertion. Implant primary stability was evaluated using Ostell by Resonance Frequency Analysis. Results The results showed no significant difference between bone height changes and densities in the control and study groups. Implants primary stability also showed no significant difference in ISQ values between both groups. Conclusion Biologic drilling is a promising implant drilling protocol with a potential to insert implants showing successful osseointegration and acceptable bone changes.

Systemic Versus Local Injection Of Bone Marrow Mesenchymal Stem Cells On 5-Fluorouracil Treated Parotid Glands Of Albino Rats, Caroline Maged Massieh, Medhat El Zainy, Reham Magdy Amin, Iman Fathy

Dentistry

ABSTRACT Objective: Head and neck cancer is the sixth leading cancer by incidence worldwide and eighth by death. Recent reports revealed that, not only radiotherapy but also chemotherapy may induce xerostomia. The aim of this study was to compare the possible regenerative effect of BMSCs through systemic and local injections. Material and Methods: 52 male Albino rats were randomly divided into 4 groups: Group 1: 10 rats received 0.5 ml of PBS by injection. Group 2: 14 rats received an intraperitoneal injection of 5-FU drug. Group 3: 14 rats were injected the same dose of 5-FU then received an intraglandular …

Oral Mucormycosis In Post-Covid- 19 Patients: A Case Series, Enji Ahmed Mahmoud, Asmaa Abobakr, Radwa Raghib, Ayman El-Gawish, Dalia Galwash

Dentistry

No abstract provided.

Assessment The Propolis Effect Versus Calcium Hydroxide Effect As Intracanal Medications On Post-Operative Pain In Necrotic Teeth, Engy M. Kataia

Dentistry

Aim: to evaluate the postoperative pain of using Propolis versus Calcium hydrox- ide as intracanal medications on post-operative pain in necrotic teeth. Subjects and Methods: 40 patients requiring endodontic treatment for single rooted teeth were en- rolled in this analysis. The selected patients were separated into two groups with 20 pa- tients each; Group І: Propolis paste. Group II: Ca (OH)2 paste. The local anesthesia was administrated, and the working length determined by Root ZX apex locator, and then confirmed radiographically. The root canals were mechanically prepared in a crown- down approach using the “TF Adaptive” setting on Elements Motor. …

Flexure Strength Of Methacrylate- And Ormocer-Based Bulk Fill Resin Composites: Effect Of Material Thickness And Distance To Photo-Polymerization Device., Sara Adel Botros

Dentistry

This study evaluated the effect of thickness and photo-polymer- ization distance on flexure strength of two bulk fill resin compo- sites. In total, 96 rectangular-shaped resin composite bars were divided into eight experimental groups (n ¼ 12/group) according to the three experimental factors; Factor 1: Material (X-tra fil and Admira Fusion X-tra), Factor 2: Thickness (2 mm and 4 mm) and Factor 3: photo-polymerization distance (2 mm and 8 mm). The bars were prepared with fixed 2 mm width and 2 mm length but differed in thickness (2 mm or 4 mm). The bars were light cured either at 2 …

The Possible Protective Role Of Vitamin E On The Induced Silver Nanoparticles Toxicity On Filiform And Circumvallate Tongue Papillae Of Albino Rats Histological And Immunohistochemical Study, Nada Tarek Zaki, Mahmoud Al Ankily, Reham Magdy Amin, Ahmed Mahmoud Halawa

Dentistry

Recently Silver nanoparticles (AgNPs) are widely used as in manufacturing of filters to purify drinking water, as a part of surgical prosthesis, splints, dental alloys and most importantly in the medical field as a bactericidal, fungicidal and as a therapeutic agent. Although these widely usage of AgNPs, can induce toxicity. to evaluate the protective role of vitamin Eon the induced silver nanoparticles toxicity on filiform and circumvallate tongue papillae of albino rats. twenty-eight male albino rats weighing 200-250 grams were divided into; the control and the experimental groups, which is subdivided into, subgroup I receiving AgNPs and subgroup II receiving …

Relation Of Oral Ulcers To Quality Of Life: A Cross-Sectional Study, Enji Ahmed, Ayat Gaml Abdelnasser, Mai Zakaria, Soheir Gafar

Dentistry

Oral ulcers affect many dental patients; impairing their lives physically, psychologically, and socially. Due to the absence of information about oral ulcers in our population, the authors undertook a pilot study to obtain a more complete picture of prevalence of oral ulcers, its probable risk factors and its burden on the quality of life. Materials and methods The authors performed a cross‑sectional study with 605 adult dental patients. All patients filled a questionnaire inquiring about the risk factors. An oral examination was performed to each participant to determine presence or absence of oral ulcers; and the type of the oral …

Influence Of Blood Contamination On The Bond Strength And Biointeractivity Of Biodentine Used As Root-End Filling, Shehabeldin Mohamed Saber Prof.Dr.

Dentistry

Aim: To evaluate the influence of blood contamination on the bond strength and apatite forming ability of Biodentine used as root-end filling material. Methodology: Eighty (n = 80) extracted single-rooted, sound human maxillary anterior teeth were prepared and obturated. Then, the roots were resected, retrograde cavities were prepared and Biodentine was inserted as the root-end filling material. Teeth were then randomly divided into 2 equal groups (n = 40) according to the setting environment of Biodentine i.e., group A where setting took place in human blood and group B where setting took place in deionized water (control group). Teeth were …

Radiographic Evaluation Of Bone And Mucosa Using Low-Dose Cbct With Radiopaque X-Resin Stent Versus Ct And Ridge Mapping: A Validity Study, Enji Ahmed, Nader Nabil Riskallah, Mushira Muhammed Dahaba, Eman Abdelaziz Ahmed

Dentistry

Aim: To compare the abilities of computed tomography (CT), cone beam computed tomography (CBCT) with X-resin and ridge mapping and to measure the thickness of bone and soft tissue during implant planning, which allows increasing the success criteria of implant placement. Materials and Methods: This validity study included a total of 96 samples chosen from 20 patients undergoing implant surgeries (mandible and maxilla) aged between 25 and 50 years. Measurements of bone and mucosa were done by using three techniques, which are the CT, CBCT with X-resin, and finally ridge mapping at 4 points that are 3, 4, 5, and …

Correlation Between Root Surface Strain And Apical Micro-Cracks Produced During Canal Preparation With Thermally Treated Single Or Multi-File Niti Systems, Shehabeldin Mohamed Saber Prof.Dr.

Dentistry

Aim: To determine the apical root surface strain (RSS) generated during shaping with thermally treated file NiTi systems, and its association with the development of apical microcracks. Methodology: Twenty extracted human mandibular molars with severely curved mesial roots having two separate canals were prepared using XP-Endo Shaper files (Group A: XPS in mesio-buccal canals) and Hyflex CM files (Group B: HCM in mesio-lingual canals). Pre-instrumentation images of apical surface of each root were obtained with Environmental Scanning Electron Microscope (ESEM). Root surface strain (RSS) generated during canal preparation was measured as micro-strain (ìstrain) using electrical strain gauges fixed on apical …

Antibacterial Potential Of Nano-Particulate Intracanal Medications On A Mature E. Faecalis Biofilm In An Ex Vivo Model, Shehabeldin Mohamed Saber Prof.Dr.

Dentistry

Aim: To investigate and compare the antibacterial and antibiofilm activity of Chlorhexidine Digluconate functionalized Hydroxyapatite Nanoparticles and silver Nanoparticles as intracanal medicaments on a mature E. faecalis biofilm model in root canals of extracted teeth. Methodology: Sixty-eight human maxillary central incisors were mechanically prepared, sterilized, infected with E. faecalis, and then incubated for 28 days under anaerobic conditions to develop a mature E. faecalis biofilm. Eight teeth were used to monitor biofilm formation and maturation over the incubation period with field emission scanning electron microscopy (Fe SEM), while the other 60 teeth were divided into two experimental groups (n=20) in …

Oral Conditions In Hepatitis C Virus‐Infected Egyptian Patients: A Case‐Control Study, Asmaa Ras, Eman Khalil

Dentistry

Introduction: One of the serious public health problems nowadays is the hepatitis C virus (HCV) infection. Hepatitis C virus infection morbidity is associated with a diversity of extrahepatic disorders counting the oral cavity. Some of the oral manifestations are oral diseases like lichen planus and xerostomia and side effects of the virus therapy. The aim of this study was to evaluate and compare the oral health status, of patients with and without virus C in a sample of the Egyptian population.
Methods: Data were collected from the Gastroenterology department at Benha University. The study was designed as a case-control study; …