1,721,011 research outputs found
COVID-19: The Patients' Perceived Impact on Dental Care
No full textObjectives The present study aims to investigate the effect of the COVID-19 pandemic on people's mental and physical balance, oral hygiene habits, type of diet, perceived safety of returning to the dentist, and aesthetics with the use of masks. Materials and Methods An online questionnaire was submitted to the Italian population between December 2020 and January 2021. It was sent via online platforms and included 21 questions. Statistical Analysis Differences in rates were calculated by using the Chi-square test. The level of significance was set at p <0.05. Results A total of 1,008 individuals completed the questionnaire. About 72% of participants were not concerned about returning to the dentist. Approximately 45% of the individuals intensified their oral hygiene and preventive rules. About 38% of participants increased their carbohydrate intake, while 28% increased their fat consumption. Furthermore, 75% of the participants felt that the mask did not diminish the beauty of their smile. Conclusions Most participants felt comfortable returning to the dentist but only for more urgent treatment. However, most people reported that they had not stepped up their home oral hygiene measures. The biggest changes in the population's eating habits involved increased carbohydrate and fat consumption. Finally, most participants responded that mask use did not compromise their aesthetics
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
The role of the depth of invasion (DOI) in minor salivary glands tumors according to the 8th TNM classification: Pitfalls and potential misinterpretations
No full textDear Editor, There are between 450 and 750 minor salivary glands distributed in the upper aerodigestive tract, in the palate, lips, paranasal sinuses and nasal cavity, tongue, floor of mouth, gingiva, pharynx, larynx and trachea [1]. About 80–90% of neoplasms that grow in these glands are malignant. Minor salivary gland carcinomas (MSGCs) comprise a heterogeneous group of malignancies whose etiologies are unknown [2]. Adenoid cystic carcinoma is the most common, while mucoepidermoid carcinoma is the second, with these two tumors comprising most of all neoplasms [3]. The most common site of MSGCs is the palate, with an incidence of 8–22% among all epithelial salivary gland tumor
FT-IR analysis of the Interface between Universal Scotchbond and Oral Mucosa: a preliminary in-vitro study
No full textBACKGROUND: The long-term success of implant therapy depends not only on proper osseointegration, but also on the healing of the epithelium and the quality of the biological seal on the abutment and on the implant neck. This study aims to evaluate the possible use of dentinal adhesives on the surface of the transmucosal path of dental implants in order to create a hermetic seal between keratinized epithelium and abutment.METHODS: Four sections of 12 mu m thickness were obtained from a sample of the oral mucosa. Scotchbond TM Uni-versal Adhesive (3M ESPE, Seefeld, Germany) was carefully applied both to the samples and to the transmucosal path of titanium abutment (Win-Six, BioSAFin, Italy). The adhesives were polymerized. FT-IR analysis was performed on: 1) polymerized Scotchbond Universal Adhesive (3M ESPE, Seefeld, Germany); 2) the interface between the titanium abut-ment and the adhesive; 3) the interface between the adhesive and the mucosa; 4) the mucosa samples.RESULTS: Comparing the spectra, it emerged that the adhesive has established chemical bonds both on titanium and on the keratinized mucosa, involving different types of chemical interactions. CONCLUSIONS: The results of this in-vitro study are encouraging. In the future biocompatibility and comparative study with other adhesives will be require
Response to the comment on "The role of the depth of invasion (DOI) in minor salivary glands tumors according to the 8th TNM classification: Pitfalls and potential misinterpretations"
No full textThe OSCC is considered a very aggressive tumor and the majority of patients displays a locoregionally advanced disease at diagnosis, for which multimodality therapy is required. Tumor invasion, lymphonode metastasis and high rates of locoregional recurrence are the leading causes of death in OSCC patient
Diagnostic delay due to COVID-19 pandemic: a case of uncontrolled growth of peripheral giant cell granuloma
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