Publications by authors named "Fayad M"

Dental implants have revolutionized tooth replacement, offering a functional and aesthetically pleasing alternative to traditional dentures and bridges. While conventional implants, typically titanium screws placed into the jawbone, have become the gold standard, many studies explore non-conventional implant designs and materials to address specific challenges and patient needs. This series of literature reviews aimed to delve into non-conventional dental implants, examining their unique features and applications and the current state of evidence supporting their use.

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The decision to rehabilitate insufficient alveolar bone height with short implants is considered an effective treatment. Complicated surgical procedures such as ridge augmentation, vestibuloplasty, and sinus lifting are usually accompanied by high risks such as membrane injury, hemorrhage, nerve affection, and increased time needed for implant treatment with unpredictable healing time. Short dental implants allow for faster treatment and decrease the need for complicated surgeries that are usually associated with standard dental implants, as in all four and all six concepts.

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Background: During 2020-2021, in the context of increasing SARS-CoV-2 transmission in the general population, French authorities made the decision to keep schools open and set up massive screening campaigns for students. Here, we describe the impact of this strategy on the circulation of SARS-COV-2 among children and adolescents during this period.

Methods: We analyzed SARS-COV-2 surveillance data provided by the French National Public Health Agency for the 2020-2021 school year along with the results of school-based screening campaigns implemented by the Ministry of National Education.

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Several impression techniques and theories have been developed for implant-retained overdentures, each with its own set of advantages and limitations. This study aimed to assess the chewing efficiency of mandibular implant-retained overdentures fabricated using three distinct impression techniques (mucofunctional, selective, and minimal pressure impression techniques). Twenty-six patients with complete edentulism free from any oral or systemic disease were selected to participate in the study.

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Objective: The large body of literature examining the association between parenthood and mortality in the general population contrasts with a lack of studies among older adults with schizophrenia. Identifying potential protective factors of premature death in this population is important to help guide prevention measures. Here, we examined whether all-cause and cause-specific mortality rates significantly differ between older adults with schizophrenia with and without children, during a 5-year follow-up.

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Borderline personality disorder (BPD) and posttraumatic stress disorder (PTSD) share common risk factors, including exposure to traumatic events. We aim to estimate networks of BPD and PTSD to describe the interactions between the symptoms of these 2 disorders and identify bridging symptoms between the 2 diagnoses that may play critical roles in their co-occurrence. We performed a network analysis of data from the second wave of the National Epidemiologic Survey on Alcohol and Related Conditions (NESARC 2004-2005), a nationally representative sample of the US adult population.

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Article Synopsis
  • * It outlines the authors' experience with a transcranial endovascular approach as a solution for these difficult cases.
  • * The findings suggest that this method is both safe and effective for treating dAVF when other access routes aren't viable.
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Background: This study aimed to develop a new formula to easily estimate the vertical dimension of occlusion (VDO) by using the distance between the mental foramen on a panoramic radiograph.

Subjects And Methods: A total of 508 dentulous subjects were selected from outpatient dental clinics at the College of Dental Medicine, Al-Azhar University. The vertical dimension of the occlusion was measured using a single calibrated calliper.

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Background: This study aimed to compare the perceived masticatory ability (PrMA) in completely edentulous patients (EDPs) with thermoplastic conventional complete dentures (CDs) versus single implant-retained mandibular overdentures.

Methods: The current study was conducted in the outpatient Prosthodontic Clinic, Faculty of Dental Medicine, Al-Azhar University, Cairo, Egypt. PrMA was evaluated in 45 completely edentulous patients (46% males, mean age 50.

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Vertical dimension (VD) is a critical factor in prosthodontics, playing a pivotal role in the functional and aesthetic outcomes of dental treatments. This literature review explores theoretical foundations and the various aspects of VD, including its definition, measurement, and clinical significance in prosthodontics. The relationship between VD and temporomandibular disorders (TMDs) is examined.

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Article Synopsis
  • The study investigates how different types of thermoplastic denture bases (nylon, acetal, and acrylic) impact microbial adhesion in partially edentulous patients with Kennedy Class I dentures.
  • Thirteen patients, aged 41-50, had removable partial dentures made from these materials, and microbial counts were taken from the surfaces after one month.
  • Results indicated that thermoplastic nylon had the lowest microbial adhesion, suggesting it may be the best option for reducing microbial colonization in denture bases.
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Objectives: The aim was to estimate the effect of reported history of smallpox vaccination prior to 1980 on clinical expression of mpox.

Methods: We included all confirmed mpox cases identified by the national mpox surveillance system in France between May and July 2022. Cases tested positive for monkeypox virus or orthopoxviruses by PCR.

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Aldosterone is a cardiovascular hormone with a key role in blood pressure regulation, among other processes, mediated through its targeting of the mineralocorticoid receptor in the renal tubule and selected other tissues. Its secretion from the adrenal gland is a highly controlled process subject to regulatory influence from the renin-angiotensin system and the hypothalamic-pituitary-adrenal axis. MicroRNAs are small endogenous non-coding RNA molecules capable of regulating gene expression post-transcriptionally through stimulation of mRNA degradation or suppression of translation.

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Black pepper ( L.), a crop of the genus Piper, is an important spice that has both economic and ecological significance. It is widely regarded as the "King of Spices" because of its pungency, attributed to the presence of piperine.

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Article Synopsis
  • The mpox epidemic in France, which saw an increase in locally-acquired cases starting in May 2022, was analyzed through data collected until September 2022.
  • A total of 4,856 cases were reported, primarily affecting male individuals aged 15 and older, with specific demographic changes noted over the summer months.
  • The study observed a decline in the number of cases attending men-who-have-sex-with-men (MSM) venues and a reduction in sexual partners, which may reflect shifts in behavior and virus transmission dynamics.
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Article Synopsis
  • International comparisons of COVID-19 incidence rates offer insights into disease characteristics and inform public health policies, but can be biased due to differences in surveillance systems among countries.
  • Data was collected from six European countries (Belgium, England, France, Italy, Romania, Sweden) to analyze their COVID-19 testing and reporting methods, revealing significant differences in testing rates and access to testing.
  • Incorporating testing data into incidence rate comparisons and using alternative indicators like death or hospitalization rates could enhance the accuracy of international comparisons.
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In the recent decades, the researchers have been focused on the use of photovoltaic thermal (PVT) systems that provide the best performance and cooling for the photovoltaic panels. In this study, a PVT system consisting of a monocrystalline PV panel and a spiral heat exchanger was connected to an underground heat exchanger that is buried at a depth of 4 m below the surface of the earth. The procedure of the current study can be considered the first of its kind in the Middle East and North Africa region (based on the researchers' knowledge).

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Carotid cavernous fistulas (CCFs) are a rare but debilitating entity that may present with orbital or cerebral venous hypertension. CCFs may pose diagnostic and management pitfalls for clinicians as they can initially be misdiagnosed as primary orbital pathology or nonarteriovenous shunting-related cavernous sinus pathology. Furthermore, the resolution of pulsatile tinnitus could be an ominous sign in patients with untreated dural arteriovenous fistula.

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Background: Early evidence suggests that middle meningeal artery (MMA) embolization is an efficacious minimally invasive neuroendovascular technique for the management of chronic subdural hematoma (cSDH). Particle and liquid embolic materials are commonly used to embolize the MMA; however, studies comparing the safety and outcomes between these 2 materials are limited.

Methods: Patients ≥18 years old who had MMA embolization for cSDH between July 15, 2020 and May 1, 2022 were retrospectively identified from a single-center database.

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Article Synopsis
  • The World Health Organization declared COVID-19 a pandemic on March 11, 2020, and this study aimed to assess the disease's impact in France for that year using a measure called disability-adjusted life years (DALYs).
  • The analysis utilized national data on mortality, hospital admissions, and screening, estimating a total of 990,710 DALYs lost in France in 2020, with 99% attributed to mortality and a small percentage to morbidity from symptomatic cases.
  • The findings highlighted that post-acute consequences significantly affected health outcomes, especially among younger people under 70, while the majority of life years lost occurred in individuals aged 70 and older.
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Background: Middle meningeal artery (MMA) embolization is becoming increasingly studied as a safe, effective treatment for chronic subdural hematoma (cSDH) in adults. Among pediatric patients, however, MMA embolization for cSDH has been rarely described, and the potential benefit of this approach for pediatric patients remains unknown.

Objective: To systematically review the literature and identify cases of pediatric MMA embolization for cSDH.

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Background: Trans-radial access (TRA) for MMA embolization has grown due to lower access site complications and greater patient satisfaction. Here, we describe the feasibility of utilizing a 6F Envoy Simmons 2 (6F-SIM2) as a guide catheter with TRA and compare outcomes with trans-femoral approach (TFA) in a single center case series.

Methods: We performed a retrospective review of patients who underwent MMA embolization for management of chronic subdural hematoma (cSDH).

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Article Synopsis
  • High sulfur content in diesel fuel poses challenges for combustion and emission control, particularly in countries like Iraq.
  • This study explores the use of gasoline-diesel blends (GD30, GD40, GD50) and partially premixed combustion ignition (PPCI) to lower sulfur levels, enhance engine performance, and reduce exhaust emissions.
  • Findings indicate that while brake thermal efficiency decreases with GD blends, significant reductions in NO, CO, and PM emissions are achieved compared to conventional diesel, with particle size also diminishing, leading to cleaner combustion overall.
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Objective: The aim of the study was to determine the relationship between preoperative buccal plate thickness (BPT) and radiographic healing at the osteotomy site after endodontic microsurgery (EMS) with and without guided tissue regeneration (GTR) using cone beam computed tomography (CBCT) imaging.

Study Design: The retrospective sample of 143 individuals who had EMS with pre- and postoperative CBCT scans available were divided into 2 groups: group 1 (GTR) and group 2 (no GTR), which were further divided into teeth where BPT was >1.0 mm or ≤1.

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The operation of engines using rapeseed methyl ester (RME) and ultralow sulfur diesel (ULSD) was tested for the combustion properties, emitted regulated, unregulated exhaust pollutants, and the size of nanoparticles. The combustion analysis showed higher apparent heat release rate and shorter ignition delay period during RME combustion than during ULSD combustion. The ULSD engine has a combustion chamber maximum pressure relatively higher than that of RME.

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