Publications by authors named "Osman Demir"

Objective: This study aimed to investigate the histological and biochemical neuroprotective effects of secukinumab (SEC) on brain damage induced by subarachnoid hemorrhage (SAH) in male Wistar Albino rats.

Methods: Forty male Wistar Albino rats were randomly divided into 4 groups of equal size: control, SEC, SAH, and SAH + SEC. SAH was induced the SAH and SAH + SEC groups by injecting autologous blood collected from the hearts of the rats into the subarachnoid space via the foramen magnum.

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Background: The aim of this study was to evaluate the quality of life (QoL) of patients with dentofacial deformity (n = 107) compared with that of healthy individuals (n = 108) from 2019 to 2020.

Methods: Oral Health Impact Profile 14 (OHIP-14) and the Orthognathic Quality of Life Questionnaire (OQLQ) were administered to the individuals before surgery (T1) and 6 months after surgery (T2).

Results: Preoperative scores (T1) were greater in the surgical group than in the control group in all domains of both surveys (p ≤ 0.

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Objective/background: Since the apnea-hypopnea index (AHI), which is used in the diagnosis and grading of OSAS, does not adequately reflect the clinical perspective of the disease, the Baveno classification of OSA was developed, which allows multicomponent evaluation of OSAS patients. The aim of our study was to evaluate the application of the Baveno classification in clinical practice.

Patients/methods: A prospective study was performed on patients diagnosed with OSAS between January 2021 and June 2022.

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Article Synopsis
  • - The study analyzed 412 cases of bloodstream infections in hospitalized children, finding Klebsiella spp., Escherichia coli, and Acinetobacter spp. to be the most common bacteria involved.
  • - High levels of antibiotic resistance were observed, with 41.2% of isolates being multidrug-resistant and 27.6% resistant to carbapenems, indicating a concerning trend over the years.
  • - Key risk factors for these infections included having a central-venous catheter and being admitted to a pediatric intensive care unit; outcomes varied significantly between patients infected with carbapenem-resistant and carbapenem-susceptible bacteria.
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Mandibular fractures are one of the most frequently observed injuries within craniofacial region mostly due to tumor-related problems and traumatic events, often related to non-linear effects like impact loading. Therefore, a validated digital twin of the mandible is required to develop the best possible patient-specific treatment. However, there is a need to obtain a fully compatible numerical model that can reflect the patients' characteristics, be available and accessible quickly, require an acceptable level of modeling efforts and knowledge to provide accurate, robust and fast results at the same time under highly non-linear effects.

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Introduction: possesses a variety of virulence factors that may contribute to its pathogenicity, and relationship has been determined between antibiotic resistance and biofilm. The aim of this study was to investigate the virulence factors of isolates by genotypic and phenotypic methods, as well as whether there is a relationship between other virulence factors and antibiotic resistance.

Methods: A total of 80 strains were sent from various clinics included in the study.

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Background: This study aimed to evaluate the effectiveness and optimal use of corticosteroids in children with severe coronavirus disease 2019 (COVID-19) pneumonia, for which effective treatment is still lacking with respect to this population.

Methods: We conducted a retrospective study and included patients (aged < 18 years) with severe COVID-19 pneumonia and/or acute respiratory distress syndrome (ARDS) who received standard doses (2-4 mg/kg/day) and high doses (>250 mg/day) of methylprednisolone (MPZ). We adjusted for patients on steroid treatments with a propensity score and compared the side effects of different MPZ doses and patient survival.

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Purpose: The Lausanne NoSAS (Neck circumference, Obesity, Snoring, Age, Sex) score is a new tool for the identification of high-risk patients for obstructive sleep apnea (OSA). Up to now, no study has attempted to determine the role of NoSAS score in cardiovascular morbidity of patients with OSA. We aimed to investigate the relationships between NoSAS scores and CVD and also between severity of OSA, polysomnographic parameters, and NoSAS scores in patients with OSA.

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Objective: To address the gap in evidence related to molluscum contagiosum in children by focusing on demographic and clinical features as well as risk factors.

Methods: The multicentre, prospective, clinical study was conducted at four hospitals in Ankara and Tokat cities of Turkey from August 1, 2014, to August 5, 2019, and comprised patients aged ≤18 years diagnosed with molluscum contagiosum. Data about demographics, day nursery and preschool attendance, the seasons when the disease occurred, any use of Turkish baths and swimming pools, history of personal/familial atopy, coexistence of diseases, disease duration, courses, number of lesions and anatomic localisation.

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Backgrounds: Pain management is one of the most important factors affecting the success of pediatric dentistry. Therefore, new needle- and pain-free local anesthesia techniques have been developed in parallel with technological advancements. The purpose of this study is to compare the pain perception and dental anxiety levels associated with a needle-free injection system (Comfort-in™) and the classic needle method during treatment-required infiltration anesthesia in children.

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This study was conducted to evaluate the relationship between lifelong learning perceptions of pediatric nurses and self-confidence and anxiety in clinical decision-making processes. One of the most important ways to adapt to change in the developing and changing health care environment worldwide and in evidence based nursing care is lifelong learning. The most essential characteristics of a lifelong learner are reflection, questioning, enjoying learning, understanding the dynamic nature of knowledge and engaging in learning by actively seeking learning opportunities so that evidence-based nursing care can be achieved.

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Crimean-Congo hemorrhagic fever (CCHF), endemic in certain regions of the world, is listed as a priority disease with pandemic potential. Since CCHF was first identified in Turkey, children have been known to experience milder disease than adults. However, during the COVID-19 pandemic, we observed an unusually severe disease course, including hemophagocytic lymphohistiocytosis (HLH).

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Introduction: The relationship between mean platelet volume (MPV) and platelet count (PC, MPV/PC) has been studied in detail in various diseases. The aim of this study was to investigate the effect of the MPV/PC ratio in estimating the risk of postoperative mortality in unstable pertrochanteric fractures. In addition, serum biomarkers such as the neutrophil-to-lymphocyte ratio (NLR), monocyte-to-lymphocyte ratio (MLR), and platelet-to-lymphocyte ratio (PLR) will be compared with the MPV/PC ratio in predicting mortality.

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This study aimed to reveal the perceptions and conspiracy theories surrounding the new coronavirus infection. We aimed to explore associations between COVID-19 conspiracy beliefs with recommended health protective attitudes and sociodemographic features among the Turkish population. A questionnaire consisting of seven items about COVID-19 conspiracy theories and perceptions and ten items about attitudes was given to patients and their relatives in five different centres during the second national lockdown in Istanbul.

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Neurologic complications have been associated with multisystem inflammatory syndrome in children, possibly involving autoimmune mechanisms. Here, we report a 6-year-old girl who developed myasthenia 11 weeks after severe acute respiratory syndrome coronavirus 2 infection and 8 weeks after the onset of severe multisystem inflammatory syndrome in children.

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Background: Pain control during dental procedures is one of the most important topics related to behavior management in children. This study aims to compare the pain perception associated with a needle-free system (Comfort-In™) and the dental needle method during filling and pulpotomy treatments in children.

Methods: The study included teeth that required treatment (pulpotomy or filling treatment) in 56 patients aged 4 to 11 years with no systemic problems or history of allergy.

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Purpose: Obesity is defined as the abnormal or excessive accumulation of fat over acceptable limits. Leptin is a metabolic hormone present in the circulation in amounts proportional to fat mass. Leptin reduces food intake and increases energy expenditure, thus regulating body weight and homeostasis.

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Medical visual documentation is an especially important source of information for medicine. Medical photography has become the main method of medical visual documentation. In breast surgery, as in all other medical branches, medical photography has a major role in education and patient follow-up.

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Objective: Obesity is considered a major risk factor for obstructive sleep apnea syndrome (OSAS). This study aimed to examine the correlation between anthropometric measurements, which have been recently defined and are indicative of abdominal obesity and cardiometabolic diseases, OSAS severity, and polysomnography (PSG) parameters in patients with OSAS.

Material And Methods: This retrospective cohort study included patients who underwent all-night polysomnography with a prediagnosis of OSAS.

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Purpose: The present study aimed at evaluating the effectiveness of fractal analysis on determining the osseointegration of dental implants.

Material And Methods: In a single center, retrospective clinical trial, patients with dental implants in the mandibular premolar/molar region, ASA I-II and < 65-year-old patients were included. Orthopantomograph (OPG) were taken before implant surgery (t0), within a week of surgery (t1), and 1 (t2) and 2 (t3) months after surgery, respectively.

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Background: Insulin resistance (IR) is one of the most important etiological risk factors in the development of diabetes. However, there is no clear data regarding the prevalence of IR in the country.

Objective: This study evaluates the prevalence of IR and identifies the optimal threshold values for the HOMA indexes in Turkey.

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Objectives: This study aims to compare the effectiveness of dry needling (DN) and kinesiotaping (KT) therapies on pain, quality of life, depression, and physical function in the treatment of myofascial pain syndrome (MPS).

Patients And Methods: The study included a total of 60 patients (4 males, 56 females; mean age 31.2±9.

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Background: There is a crucial balance between oxidant and antioxidant defense mechanisms. We aimed to evaluate the role of the balance of these systems in children with bloodstream infection.

Methods: We analyzed prospectively oxidant and antioxidant stress parameters from serum samples of children with BSI besides demographic and clinical data of children.

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