Manda quem pode, obedece quem precisa: atualidade e centralidade da subordinação laboral para o capitalismo

O presente trabalho de pesquisa tem como objeto o fenômeno do trabalho subordinado, apreendido em seu papel na lógica do sistema econômico capitalista. Utilizando-se de uma bibliografia marxista, analisa-se criticamente a reprodução e persistência da subordinação como mediador da relação da trabalhista. Para tanto, progressivamente, expõe-se o percurso do trabalho na história humana. De fenômeno constituinte da humanidade, o trabalhar conforma o ser social, coletivizando a produção criativa. Expõe-se como a lógica privatista burguesa apropria-se do ciclo produtivo, projetando o lucro na exploração da força de trabalho. Impõemse as operações ideológicas na manutenção sistêmica do capital, ressaltado o papel do direito nessa dinâmica. Evidencia-se a contrariedade juslaboral como pretenso harmonizador das relações trabalhistas, mas isolado das raízes da problemática social. Finalmente, aproveitandose do aporte teórico apresentado, efetua-se um olhar para os discursos neoliberais e da posição atual do direito do trabalho no tocante à explicação do liame das relações laborais contemporâneas

Sociodemographic factors related to low quality of life scores in adolescents in a Northeastern city in Brazil: an analysis using the Whoqol-Bref / Factores sociodemográficos relacionados com a baixa qualidade de vida dos adolescentes de uma cidade do Nordeste do Brasil: uma análise utilizando o Whoqol-Bref

Objective: To investigate the quality of life, as well as to analyze the main sociodemographic factors associated with low quality of life scores in Brazilian adolescents. Methods: This was a cross-sectional study performed with 13,850 adolescents aged 14 to 18 years of both sexes, enrolled in public high schools. Quality of life was assessed by Whoqol-bref. Sociodemographic factors were investigated using a specific questionnaire. Results: The average frequency of global QOL was 58%, being lower in domain IV (49%), compared to domain I (51.78%), domain II (61.57%) and domain III (68.71%). Lower QOL scores were observed among female adolescents (OR=1.23, CI95%: 1.15-1.32), night shift students (OR=1.24, CI95%: 1.03-1.44) and full-time (OR=1.35, CI95%: 1.23-1.48). Conclusion: Low quality of life is very common among Brazilian high school adolescents. Domain I and IV have the lowest frequency. Lower QOL scores were associated with female gender, night shift, and full-time school shift. Our results seek to collaborate with the development of public policies aimed towards progress in the QOL of this population group

Odontogenic Keratocyst: A Case Report Emphasizing on Root Canal Treatment after Surgical Intervention

This article presents a case of odontogenic Keratocyst (OKC) located in the mandible, involving teeth 36 to 45, with significant loss of alveolar bone and aseptic pulp necrosis, emphasizing on root canal treatment after surgical intervention. Orthopantomogram and computed tomography examinations revealed an extensive, well-defined, and multilocular radiolucent lesion. Histopathological examination after incisional biopsy confirmed OKC, which was removed completely with enucleation and curettage, followed by the endodontic treatments of teeth 36 to 45 using reciprocating nickel-titanium files (Reciproc) in a single session. Afterwards, teeth 33 to 36 underwent apical surgery to create an appropriate bone development. Panoramic radiographic images showed bone formation and no sign of recurrence after one-year follow-up. In conclusion, this surgical approach, combined with the endodontic treatments of the teeth involved in the lesion, was effective for the management of OKC, promoting injury regression and preservation of the natural teeth.Keywords: Dental Pulp Necrosis; Enucleation; Odontogenic Cysts; Odontogenic Keratocyst; Root Canal Therap

Nonodontogenic cysts of the oral and maxillofacial region - demographic profile in a Brazilian population over a 40-year period

The aim of the study was to determine the distribution of histologically diagnosed nonodontogenic cysts (nOCs) over a 40-year period in a Brazilian population. Biopsy records from patients with nOC from the files of the Oral Pathology Service during the period of 1970–2009 were evaluated. Among 10,311 oral biopsies, 58 met the criteria of nOCs. The most frequent nOCs were nasopalatine duct cysts (32.8%), followed by epidermoid cysts (20.7%) and oral lymphoepithelial cysts (17.2%). Nasopalatine duct cysts showed predominance among females (68.4%). Epidermoid cysts were most commonly found in the floor of the mouth (36.4%), tongue (27.3%), and buccal mucosa (27.3%). Oral lymphoepithelial cysts exhibited female prevalence (80.0%) and were commonly located in the tongue (44.4%). The frequency of nOCs found in the population studied here is slightly different from those reported in other case series. Nasopalatine duct cysts, epidermoid cysts, and oral lymphoepithelial cysts were the most common nOCs found, accounting for 70.7% of all nOCs

Comparison of the Local Temperature, Lactate and Glucose After Three Different Strength Training Methods

International Journal of Exercise Science 14(4): 1408-1420, 2021. This study aimed to evaluate the local temperature, lactate, and blood glucose in three strength training methods. The study included 12 male subjects; (22.15 ± 5.77 years, 76.85 ± 9.15 kg, 1.72 ± 0.09 m), with minimum of 12 months of strength training experience, and all participated in the three training methods: the occlusion training (Kaatsu); the tension training (Tension); and the traditional training (Traditional). The Kaatsu training consisted in 3 sets of 10RM with occlusion device in both arms inflated to a 130% occlusion pressure. In addition, the tension method was performed with 30% of 1RM and the traditional training, consisted in 10 repetitions with 80% RM. Regarding the temperature variation, differences were observed between the Kaatsu and Traditional methods in relation to Tension (p = .049, ɳ2p = 0.187). While for blood glucose (p = .351, ɳ2p = 0.075) and lactate (p = .722, ɳ2p = 0.022) there were no differences between the methods. Regarding the temperature (°C) measured by thermography and asymmetry, the right side showed a decrease in the post-test, in relation to the pre-test, in all methods (p \u3c .05, ɳ2p \u3e 0.150). The left (p = .035, ɳ2p = 0.301) and right (p = .012, ɳ2p = 0.324) sides showed a decrease in temperature, in the post-test in relation to the pre-test, in the Kaatsu and traditional method. In asymmetry, the three methods showed an increase in the post-test in relation to the pre-test (p = .042, ɳ2p = 0.158). In conclusion, tension method seems to stimulate greater heat production than the other methods. This information can help coaches to choose among these training methods according to the desired physiological response

Polymerization shrinkage stresses in different restorative techniques for non-carious cervical lesions

Objective This study evaluated the effect of different restorative techniques for non-carious cervical lesions (NCCL) on polymerization shrinkage stress of resins using three-dimensional (3D) finite element analysis (FEA). Methods 3D-models of a maxillary premolar with a NCCL restored with different filling techniques (bulk filling and incremental) were generated to be compared by nonlinear FEA. The bulk filling technique was used for groups B (NCCL restored with Filtek™ Bulk Fill) and C (Filtek™ Z350 XT). The incremental technique was subdivided according to mode of application: P (2 parallel increments of the Filtek™ Z350 XT), OI (2 oblique increments of the Filtek™ Z350 XT, with incisal first), OIV (2 oblique increments of the Filtek™ Z350 XT, with incisal first and increments with the same volume), OG (2 oblique increments of the Filtek™ Z350 XT, with gingival first) and OGV (2 oblique increments of the Filtek™ Z350 XT, with gingival first and increments with the same volume), resulting in 7 models. All materials were considered isotropic, elastic and linear. The results were expressed in maximum principal stress (MPS). Results The tension stress distribution was influenced by the restorative technique. The lowest stress concentration occurred in group B followed by OG, OGV, OI, OIV, P and C; the incisal interface was more affected than the gingival. Conclusion The restoration of NCCLs with bulk fill composite resulted in lower shrinkage stress in the gingival and incisal areas, followed by incremental techniques with the initial increment placed on the gingival wall. Clinical significance The non-carious cervical lesions (NCCLs) restored with bulk fill composite have a more favorable biomechanical behavior

Peri-implant assessment via cone beam computed tomography and digital periapical radiography: an ex vivo study

OBJECTIVES: This research evaluated detail registration in peri-implant bone using two different cone beam computer tomography systems and a digital periapical radiograph. METHODS: Three different image acquisition protocols were established for each cone beam computer tomography apparatus, and three clinical situations were simulated in an ex vivo fresh pig mandible: buccal bone defect, peri-implant bone defect, and bone contact. Data were subjected to two analyses: quantitative and qualitative. The quantitative analyses involved a comparison of real specimen measures using a digital caliper in three regions of the preserved buccal bone – A, B and E (control group) – to cone beam computer tomography images obtained with different protocols (kp1, kp2, kp3, ip1, ip2, and ip3). In the qualitative analyses, the ability to register peri-implant details via tomography and digital periapical radiography was verified, as indicated by twelve evaluators. Data were analyzed with ANOVA and Tukey’s test (α=0.05). RESULTS: The quantitative assessment showed means statistically equal to those of the control group under the following conditions: buccal bone defect B and E with kp1 and ip1, peri-implant bone defect E with kp2 and kp3, and bone contact A with kp1, kp2, kp3, and ip2. Qualitatively, only bone contacts were significantly different among the assessments, and the p3 results differed from the p1 and p2 results. The other results were statistically equivalent. CONCLUSIONS: The registration of peri-implant details was influenced by the image acquisition protocol, although metal artifacts were produced in all situations. The evaluators preferred the Kodak 9000 3D cone beam computer tomography in most cases. The evaluators identified buccal bone defects better with cone beam computer tomography and identified peri-implant bone defects better with digital periapical radiography

The influence of teriparatide in induced tooth movement: a systematic review

Teriparatide is a synthetic drug similar than PTH (parathyroid hormone), which is currently used as long-term treatment option for patients with bone chronic diseases, as osteoporosis; and this drug can interfere in a positive way in orthodontic movement. Objectives: The medical literature was assessed in the present systematic review in order to determine the level of scientific evidence supporting the influence of teriparatide in induced tooth movement. The PRISMA Checklist was followed in this systematic review. Four electronic databases (PubMed; Scopus; ScienceDirect; OpenGrey) were searched without implementing restrictions of year, status, and language of publications. The inclusion criteria consisted of selecting only experimental studies comparing the influence of teriparatide in tooth movement of male Wistar rats. The exclusion criteria consisted of experiments with female rats or other experimental animals, and animals with pathologic conditions. The eligible studies were evaluated based on methodological quality. Two trained examiners performed all the research steps. The initial sample comprised 700 studies, which was reduced to 664 after the exclusion of duplicates (n=36). Three articles were selected for the final qualitative analysis. The local administration of parathyroid hormone (PTH) 1-34 or PTH 1-84 revealed major effectiveness when compared with control groups and systematic administration. Additionally, the dilution of PTH 1-34 within methyl cellulose (MC) gel increased the time range for drug release, enabling to reduce the drug concentration without decreasing the effectiveness of tooth movement. Teriparatide demonstrated potential acceleration of tooth movement in Wistar rats depending on the drug concentration; drug administration; and time for drug release