Notes

Matroid connection along with singularities associated with setting hypersurfaces.
To report the experience of a Virtual Culture Circle with Brazilian families about coping with COVID-19, as a space that promotes health during the pandemic.

Experience resulting from an extension action, the Virtual Culture Circle was held based on Paulo Freire's Research Itinerary. It counted with the participation of seven families from different locations in Brazil. During the dialogues, a house was built the foundation represented the thematic research; walls and roof, coding and decoding; doors and windows, the critical unveiling.

The action-reflection-action process favored the approach and integration of the participants of the Culture Circle; despite the geographical distance, it is an innovative strategy for empowerment and health promotion.

The Virtual Culture Circle constituted a soft technology for health care and can be explored as a tool for promoting health, especially in scenarios where face-to-face meetings are an impossibility.
The Virtual Culture Circle constituted a soft technology for health care and can be explored as a tool for promoting health, especially in scenarios where face-to-face meetings are an impossibility.
Reflect, in the light of the Health Belief Model, on the adoption of behavioral measures in the context of COVID-19.

Theoretical-reflective essay, based on the Health Belief Model, to reflect on adherence to preventive behaviors in the pandemic of COVID-19.

Adherence to preventive behaviors is strongly influenced by socioeconomic, territorial, political and individual factors in the face of critical health situations. In addition, the spread of false news modulates the thinking and execution of behavioral actions in the population.

It is necessary to understand the importance of health communication processes and the use of tools aimed at responsible human behavior and engaged in the adoption of a preventive posture.
It is necessary to understand the importance of health communication processes and the use of tools aimed at responsible human behavior and engaged in the adoption of a preventive posture.
to report the experience of professors and students of a graduate course on nursing care in coping with the new coronavirus (COVID-19) based on Self-Care Theory.

the active methodologies used were a literature search and seminar presentations, with an understanding of Orem's theoretical concepts health; man; self-care; universal, developmental and health deviation requirements; self-care activities; self-care deficits; the required therapeutic demand; nursing systems. The pandemic was considered a health deviation that requires critical thinking and nursing care planning. Methodological frameworks to classify nursing diagnoses, interventions, and outcomes were used.

for each health deviation, nursing systems were identified; self-care deficits, diagnoses; actions, interventions; and the form of assessment, outcomes.

theoretical-practical reflections of the academic context support nursing care planning.
theoretical-practical reflections of the academic context support nursing care planning.This study evaluated how Er,CrYSGG laser, associated or not with 5% fluoride varnish, influences the surface roughness and volume loss of bovine root dentin submitted to erosive and/or abrasive wear. One hundred and twenty dentin specimens were divided into the groups without preventive treatment (WPT), 5% fluoride varnish (FV); Er,CrYSGG laser irradiation (L), and varnish combined with laser (FV + L). Avitinib The specimens (n = 10) were subdivided into 1 = erosion (E); 2 = abrasion (A); and 3 = erosion followed by abrasion (E + A). The erosive solution used was a soft-drink (pH = 2.42 at 4ºC) applied in 5-min cycles twice a day for 10d. Abrasive wear involved brushing for 60s with an electric brush (1,600-oscillations/s) at a load of 2.0N. Surface roughness and volume loss were evaluated using a laser scanning confocal microscope. Roughness data were submitted to one-way ANOVA and Tukey post-hoc test. For volume loss, the Kruskal-Wallis and Dunn's post-hoc tests were used (α = 5%). The lowest values of roughness were found in the control areas of all subgroups (p > 0.05). In the experimental area, the [(WPT) + (E+A)] subgroup had a significantly higher roughness (5.712 ± 0.163 μm 2 ) than the other subgroups (p less then 0.05). The L and (FV + L) groups had statistically similar roughness, regardless of the type of wear. The (FV + L) group had the lowest volume loss, regardless of the type of wear performed [(FV + L) + (E)] = 7.5%, [(FV + L) + (A) = 7.3%, and [(FV + L) + (E + A)] = 8.1%. The subgroup [(WPT) + (E + A)] had the highest volume loss (52.3%). The proposed treatments were effective in controlling dentin roughness. Laser irradiation can be an effective method to increase root dentin resistance after challenges and limit problems related to non-carious lesions.The aim of this study was to evaluate the filling ability of a new ready-to-use calcium silicate-based sealer using thermoplastic or single-cone technique in flattened root canals. Twenty-four flattened distal canals of mandibular molars with a buccolingual diameter 4 or more times larger than the mesiodistal diameter were selected. The root canals were prepared and filled (n = 12), according to the following techniques thermoplastic or single-cone technique using Bio-C Sealer. The teeth were scanned using Skycan 1176 micro-computed tomography (micro-CT) - voxel size 8.74 µm, before and after filling the root canal. The percentage of voids in the filled root canals was evaluated, and the data were statistically analyzed using the unpaired t-test (α = 0.05). The root canals filled using the thermoplastic technique created a smaller percentage of voids in the cervical/middle thirds than those filled using the single-cone technique (p 0.05). The flattened root canals in the cervical/middle thirds were better filled using the ready-to-use calcium silicate-based sealer associated to the thermoplastic technique, compared with the single-cone technique. In the apical third, the techniques showed similar filling ability.The aim of the present overview was to evaluate the outcomes of systematic reviews to determine the incidence of condylar resorption in patients submitted to orthognathic surgery and analyze whether the risk of developing this condition is related to a specific type of surgery. Searches were conducted in the PubMed/MEDLINE, Embase, and Cochrane electronic databases for systematic reviews with quantitative data on condylar resorption due to any type of orthognathic surgery for dentoskeletal deformities published up to May 25, 2019. The AMSTAR 2 and Glenny tools were applied for the quality appraisal. Five systematic reviews were included for analysis. Only one article was considered to have high quality. Among a total of 5128 patients, 12.32% developed condylar resorption. From those patients, 70.1% had double jaw surgery, 23.4% had mandibular surgery alone, and in 6.5% a Lefort I technique was used. Based on these findings, bimaxillary surgery could be considered a risk factor for condylar resorption. However, these results should be interpreted with caution, since other factors, such as pre-operative skeletal deformities, type of movement, and type of fixation, can contribute to the development of this condition.
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