317 research outputs found

    My tongue hurts

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    This series of articles comprise of short reviews of clinical problems relevant to oral health care in the twenty-first century. The present article uses a composite of presenting case symptoms to hypothetically illustrate differential diagnoses of pain of the tongue and why there may, or may not be, links to aspects of infection of SARS-CoV-2 (COVID-19)

    Patient and clinician perspectives of information needs concerning oral epithelial dysplasia

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    OBJECTIVES: Individuals diagnosed with a chronic oral disease that increase the risk of mouth cancer, such as oral epithelial dysplasia (OED), require appropriate knowledge to make informed decisions. The present study aimed to assess whether patient information needs of a group of patients concerning dysplasia were met and to what degree clinicians agree with patients on 'important' topics. SUBJECTS AND METHODS: This represented secondary analyses of a cross-sectional study to assess the information needs of 86 patients diagnosed with dysplasia compared with those of 77 clinicians using the validated OED Information Needs Questionnaire. Descriptive, concordance and regression analyses were performed for the collected data. RESULTS: The mean and median total scores for all items in the amount of information received subscale were 2.33 and 2.44, indicating overall unmet needs concerning dysplasia. Clinicians were generally able to predict topics of greatest importance to patients, although their scores were mainly lower than those of patients (k = 0.06). There was a higher agreement between patients (k = 0.25) than clinicians (k = 0.09). CONCLUSION: Clinicians are encouraged to assess a patient's information needs to ensure tailored and patient-centred communication concerning OED during all clinical consultations

    Validity and internal consistency of four scales in patients with TMD: PHQ8, GAD7, PHQ15 and JFLS20

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    OBJECTIVES: The aim of this cross-sectional study was to explore the structural validity and internal consistency reliability of General Anxiety Disorder-7, Patient Health Questionnaire-8, 15 and Jaw Functional Limitation Scale-20 in patients with chronic pain of temporomandibular disorders. MATERIALS AND METHODS: Validity and reliability were assessed in 129 patients diagnosed according to the diagnostic criteria for temporomandibular disorders. Structural validity was explored using factor analysis, and internal consistency by calculating Cronbach α. RESULTS: Confirmatory factor analysis revealed a suitable 2-factor model for Patient Health Questionnaire-8, with Cronbach α of 0.89, and 0.86. One and 2-factor models were suitable for General Anxiety Disorder-7, with overall Cronbach α of 0.93 for the 1-factor model, and 0.91 and 0.84 for both factors in a 2-factor model. A 4-factor solution was appropriate for Patient Health Questionnaire-15, with Cronbach α of 0.72, 0.57, 0.71 and 0.73 for each factor separately. Exploratory factor analysis was conducted to explore the factor structure of Jaw Functional Limitation Scale 20, and a 3-factor solution was appropriate. CONCLUSIONS: This study provides positive evidence of structural validity and internal consistency of these questionnaires in patients with pain of temporomandibular disorders. However, additional testing is required to explore further psychometric properties

    Audiovisual information of oral epithelial dysplasia: Quality, understandability and actionability

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    OBJECTIVES: Online information on oral epithelial dysplasia (OED) is insufficient and of low quality. While only written information has been previously assessed, this study aims to evaluate the content and quality of audiovisual (AV) online information about OED. METHODS: One hundred and twenty-seven materials were initially considered using six key words across two search engines (YouTube and Google). Ultimately, 29 materials remained for the final assessment. These materials were then analysed for content, quality (DISCERN instrument, JAMA benchmarks), understandability and actionability. RESULTS: Most contents were scientific (n = 25), while three videos were educational, and one video was a personal experience with OED. On a scale of 1–5, the overall DISCERN score was (mean ± SD = 2.26 ± 0.79), suggesting poor quality of information. Regarding JAMA benchmarks, there was no single material that fulfilled or lacked all four benchmarks. The overall mean understandability score was 82% and the actionability mean score was significantly low at 29%. CONCLUSIONS: Although the vast majority of AV materials on OED were primarily produced for scientific purposes, these materials could be helpful as resources for patient education. Keeping in mind, however, that the desired quality and essential patient information about OED available online remains largely poor and missing

    Characterization of nanofluids formed by fumed Al2O3 in water for geothermal applications

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    The European Project Cheap-GSHPs, recently approved, aims at reducing the total cost of shallow geothermal systems by 20-30%, also improving actual drilling/installation technologies and designs of Ground Source Heat Exchangers (GSHEs), in combination with a holistic engineering approach to optimize the entire systems for building and district heating and cooling applications, across the different underground and climate conditions existing within the EU. In this frame, the efficiency of the system heat pump/GSHE will be an important task and a part of this project will be on the analyses of possible alternative secondary fluids to be used in the geothermal probe. Here, suspensions of fumed Al2O3 in water will be considered as possible efficient secondary fluids. Three different concentrations will be studied, i.e. 10%, 30% and 40%, and the stability, thermal conductivity and dynamic viscosity of these fluids will be characterized, in order to analyse their possible employment as thermal fluids

    Pathophysiology of dynamic left ventricular outflow tract obstruction in a critically ill patient

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    Left ventricular outflow tract obstruction is not a rare problem in the intensive care units and can precipitate hemodynamic shock unresponsive to catecholamine therapy. The use of echocardiographic examination is extremely important in recognizing this phenomenon and its underlying conditions, finally identifying the most appropriate therapeutic strategy. The simple correction of one or more of these factors can dramatically change patients clinical outcome. We report the clinical case of a 72-year-old man who developed hemodynamic shock in the intensive care unit. Hypovolemia, catecholamine infusion, and mechanical ventilation induced geometric modification of the left ventricle causing a systolic anterior motion of the mitral anterior leaflet and a severe subaortic gradient. Simple restoration of fluids and discontinuation of medical therapy dramatically changed the outcome of the patient. A review of the medical literature has been carried out to deeply investigate pathophysiology of left ventricular outflow tract obstruction in critically ill patients. © 2010, Wiley Periodicals, Inc

    RANKL neutralisation prevents osteoclast activation in a human in vitro ameloblastoma-bone model

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    Ameloblastoma is a benign, locally invasive epithelial odontogenic neoplasm of the jaw. Treatment of choice is jaw resection, often resulting in significant morbidity. The aim of this study was to recapitulate ameloblastoma in a completely humanised 3D disease model containing ameloblastoma cells, osteoblasts and activated osteoclasts to investigate the RANKL pathway within the ameloblastoma stromal environment and its response to the RANKL antibody denosumab. In vitro bone was engineered by culturing human osteoblasts (hOB) in a biomimetic, dense collagen type I matrix, resulting in extensive mineral deposits by day 21 forming alizarin red positive bone like nodules throughout the 3D model. Activated TRAP + human osteoclasts were confirmed through the differentiation of human CD14+ monocytes after 10 days within the model. Lastly, the ameloblastoma cell lines AM-1 and AM-3 were incorporated into the 3D model. RANKL release was validated through TACE/ADAM17 activation chemically or through hOB co-culture. Denosumab treatment resulted in decreased osteoclast activation in the presence of hOB and ameloblastoma cells. These findings stress the importance of accurately modelling tumour and stromal populations as a preclinical testing platform
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