Universidade Estadual da Paraíba (UEPB): Sistema Eletrônico de Editoração de Revistas
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Radiographic Evaluation of the Lower First Permanent Molars of Children from Southeastern Brazil
Get PDFObjective: To evaluate the health condition of the lower first permanent molars of children aged 6 to 12 years from the Southeast states in Brazil (Espírito Santo, Minas Gerais, Rio de Janeiro, and São Paulo). Material and Methods: 1300 digital panoramic radiographs (2600 lower first permanent molars) from a database were analyzed by a calibrated examiner for the presence of carious lesions in dentin, pulp involvement, presence of restorative and/or filling material, and periapical lesion. Results: Data were analyzed using the R software (p<0.05; 95% IC). The right and left sides were compared using the McNemar\u27s test. 51.1% of the sample were male, and 48.9% were female (mean of 9.2 years; SD = 1.9). 6.4% of the teeth had carious lesions, 7.3% had restorative material, and 0.3% were absent. The mixed linear regression model showed that age advance was proportional to the increase in the number of missing teeth (p=0.012), decayed, restored, and periapical lesions (p<0.001). There was a higher incidence of restored teeth in females (8.5%) than in 6.1% of males (p=0.019). Conclusion: There was a low incidence of dentin dental caries lesions and a low rate of loss of the permanent lower molar in children from Southeastern Brazil. As the individual ages, alterations in the lower first molars increase. There was no association with sex, except for the presence of restorations
Syphilis and Urogenital Diseases during Pregnancy and Developmental Defects of Enamel: A Brazilian Prenatal Cohort (BRISA)
Get PDFObjective: To evaluate the effect of syphilis and urogenital diseases (SUD) during pregnancy on developmental defects of enamel (DDE) using causal inference models. Material and Methods: This study is a prospective cohort – the Brazilian Ribeirão Preto and São Luís Cohort Study (BRISA) – including 865 mother-child dyads, evaluated in three moments: prenatal care (22nd and 25th weeks of gestational age); baby birth; and between 12.3-36 months of age. The outcome was assessed according to the modified DDE index. The exposition, SUD, comprised at least one of the following infections: bacterial vaginosis, urinary tract infection, and syphilis. The covariables included in the theoretical model were socioeconomic situation (SES), low birth weight, mother’s age, number of prenatal care visits (PCV), hypertension, diabetes, medication use during pregnancy, and child’s age. Based on the proposed directed acyclic graph (DAG), SES and the number of PCV were the minimal set of covariables for the adjusted model. The effects were estimated by causal inference using a marginal structural model (Average Treatment Effect - ATE coefficients). Results: SUD did not interfere in the incidence of DDE (ATE: -0.92; CI95%: -0.23-0.49; p=0.202). Conclusion: SUD during pregnancy does not have a causal effect on DDE on primary dentition. Another possibility is that other infections not included in the model may have confounded the association, biasing toward the null hypothesis
Prevalence of Dental Trauma in Autism Spectrum Disorder: A Systematic Review and Meta-Analysis
Get PDFObjective: To compare the prevalence of dental trauma between individuals with Autism Spectrum Disorder (ASD) and those without ASD. Material and Methods: A systematic review was conducted across the MEDLINE/PubMed, Cochrane, Scopus, OpenGrey and Web of Science databases. We included observational and quantitative studies conducted in English, encompassing populations of individuals with ASD, regardless of the level of support required, and without restricting the publication year. Exclusion criteria comprised duplicate articles, qualitative research, animal studies, letters, case reports, editorials, literature reviews, and other systematic reviews. The risk of bias was assessed using ROBINS-I. The certainty of evidence was assessed using the GRADE approach. Meta-analysis was performed to determine the frequency of traumatic dental injuries, estimating odds ratios (ORs) with 95% confidence intervals (CIs) using fixed-effects models. Results: Nine studies were included in the qualitative analysis, and eight were included in the meta-analysis. The findings demonstrated significant heterogeneity, moderate risk of bias, and a moderate level of certainty. Autistic individuals exhibited a higher prevalence of traumatic dental injuries, with subluxation (OR: 3.32; 95% CI: 1.14-9.67) and lateral dislocation (OR: 3.45; 95% CI: 1.42-8.41) being significantly more frequent within this group. Conclusion: The evidence suggests a trend towards a higher prevalence of dental trauma in the autistic group, particularly involving enamel and enamel-dentin injuries. Subluxation and lateral dislocation were more common among autistic individuals. These findings underscore the importance of a tailored approach to oral health in individuals with ASD
Establishing the Dental Care Profile: Resolution-Oriented Approach at an Emergency Pediatric Dental Care Service and Patient Inclusion in Regular Clinics
Get PDFObjective: To determine the dental care profile, evaluate resolution-oriented effectiveness based on the main complaint, and investigate the inclusion patients in the regular care clinics of the dental school. Material and Methods: A retrospective study was conducted involving the analysis of the dental records of children who sought emergency dental care in a nine-year period. Data were collected on demographic characteristics (age and sex), referral sources, pain, area of residence, main complaints, reasons for seeking emergency dental care, tooth involved, affected region, and procedures performed. Curative procedures performed based on the main complaint and the inclusion of patients in regular university care were the criteria used to evaluate resolution-oriented effectiveness. Descriptive analysis was performed. Results: This study involved the analysis of 2865 dental records from 2011 to 2019. Most patients were male (52.5%), six to 11 years of age (48.1%), self-referred to the service (85.4%), and resided in the same city as the school of dentistry (67.1%). Dental caries was the main reason for seeking the service (78.0%). Regarding resolution-oriented effectiveness, curative procedures were performed, with dental caries as the primary complaint, and 44.8% of patients were referred to and included in the regular university dental clinics. Conclusion: The profile of pediatric patients seeking emergency dental care revealed that dental caries is the main reason for seeking care, with effective curative procedures performed. Many patients were referred to regular university clinics, underscoring the importance of emergency services in providing immediate treatment and promoting ongoing oral health care
Influence of Tropical Fruit Beverages on Color Stability and Roughness of Resin Composites
Get PDFObjective: To evaluate the effects of Amazonian tropical fruit juices on the color and surface roughness of resin composites. Material and Methods: Cylindrical specimens (Ø6 × 2 mm) of microhybrid (Filtek Z250XT) and nanofilled (Filtek Z350XT) resin composites were subjected to roughness (µm, Ra) and color analyses (CIE L*a*b*, CIEDE2000 and Vita Scale). The analyses were performed at baseline and after 7 days of immersion in the solutions (n=12): distilled water (control), açaí beverage (Euterpe oleracea), bacuri beverage (Platonia insignis), or muruci beverage (Byrsonima crassifolia). The data were evaluated using the Kruskal-Wallis, Dunn, Mann-Whitney, and Wilcoxon tests (α=0.05). Results: The bacuri increased the Ra of the nanofilled resin composite (p=0.0284). The nanofilled resin composite obtained higher ΔEab and ΔE00 values compared with the microhybrid resin composite, regardless of the beverage (p<0.01). Exposure to açaí or muruci beverages increased the b* values (p<0.0001), altered a* values (p=0.0051), and promoted higher ΔEab and ΔE00 values than the control (p<0.0001). Both resin composites showed higher Vita scale scores when exposed to muruci and açaí beverages (p=0.0051). Conclusion: Tropical beverages can negatively influence the color stability of resin composites. The greatest changes in resin composite color were detected from muruci and açai beverages, and these effects were greater in the nanofilled resin composite
Os princípios, os fins e os meios: políticas públicas e interpretação do Direito pela Administração
Get PDFPrincípios são parte inafastável da teoria jurídica e da prática (não só judiciária) atual, mas há muitos entendimentos sobre tal conceito e sobre sua relação com regras e políticas públicas. Uma das versões mais correntes é a teoria dos princípios de Ronald Dworkin. Ocorre, porém, que o pensamento de Dworkin desenvolveu-se gradativamente no sentido da tese de que as controvérsias jurídicas têm uma única resposta certa do ponto de vista do juiz. Partindo de uma situação do modelo dworkiniano entre seus antecedentes e concorrentes, este artigo investiga se tal teoria pode ser também aplicável como parâmetro descritivo e corretivo para a tomada de decisões na Administração Pública em um Estado Democrático e Social de Direito, tendo em vista, especialmente, que a Administração não está adstrita, seu processo decisório, aos termos iniciais delimitados em uma lide; está sujeita a mudanças de orientação política na direção de seus quadros burocráticos; tem a pretensão de legitimar-se pela participação dos interessados na produção dos atos administrativos; e depende de uma margem de discricionariedade e revisabilidade de seus atos para responder à demanda de experimentação e corrigibilidade na implementação das políticas públicas
O DOMÍNIO DA METALURGIA PELOS OS PRIMEIROS SERES HUMANOS: PRÉ-HISTÓRIA E AS ARTES
No full textRESUMO
Este artigo explora o domínio da metalurgia pelas sociedades pré-históricas e seu impacto no desenvolvimento humano e nas artes. O estudo destaca a transição da Idade do Cobre, passando pela Idade do Bronze, até a Idade do Ferro, mostrando como a descoberta e a manipulação dos metais revolucionaram a vida cotidiana, a agricultura, a guerra e a expressão cultural. O uso do cobre marcou o início das ferramentas metálicas e utensílios domésticos, enquanto a combinação de cobre e estanho originou o bronze, uma liga mais resistente que possibilitou a produção de armas, ornamentos e elementos arquitetônicos. A chegada do ferro representou um ponto de virada, pois sua durabilidade transformou a agricultura, as estratégias militares e as práticas artísticas. Artefatos como armas, cerâmicas, esculturas e joias refletiam estruturas sociais, crenças e dinâmicas de poder, revelando o papel central do metal na formação das civilizações antigas. Ao analisar registros históricos, achados arqueológicos e produções artísticas, o artigo enfatiza que a metalurgia não apenas impulsionou a sobrevivência e a tecnologia humanas, mas também serviu como meio de identidade cultural e expressão artística ao longo da pré-história.
Palavras-chave: Metalurgia, Pré-história, Arte, Desenvolvimento Humano
 
Saberes matemáticos e erros cometidos dos estudantes do 4º ano do Ensino Fundamental com problemas de Composição e Transformação do Campo Aditivo
No full textNeste texto pretendemos identificar os saberes matemáticos e os erroscometidos e as estratégias de estudantes de uma turma do 4º ano do Ensino
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Fundamental ao lidarem com problemas dos significados de Composição eTransformação do Campo Aditivo em uma avaliação diagnóstica. Para tanto, recorremosa uma metodologia de natureza qualitativa, de tipologias, análise documental e deconteúdo, no qual adotamos como corpus de análise o documento &quot;Orientador parasondagem de matemática- Ciclo de Alfabetização e Interdisciplinar- Ensino Fundamental(SÃO PAULO, 2019), da Secretaria Municipal de Educação do Município de São Paulo.Para o desenvolvimento da pesquisa, buscamos aprofundamento teórico nos estudos deVergnaud (1996;2009) e de outros pesquisadores que se debruçaram na TeoriaConceitual Aditiva (Magina e Campos, 2004; Nunes, Campos, Magina e Bryant, 2001.).Dentre os resultados destacamos que a partir dos dados coletados, foi possível identificarque a maioria dos estudantes foram capazes de compreender o cálculo relacional nosproblemas que representam a ideia de Composição e Transformação. No entanto, asdificuldades surgiram principalmente na execução do cálculo numérico, especialmente naoperação de subtração com reserva. Isso sugere que os alunos podem ter umacompreensão conceitual dos problemas, mas enfrentam obstáculos na aplicação práticados algoritmos matemáticos
Effect of Chelating Agents on Compressive and Push-Out Bond Strength of Calcium Silicate-Based Materials in Furcal Perforations
No full textObjective: To evaluate and compare the effects of 17% Ethylenediaminetetraacetic acid (EDTA) and 7% Maleic Acid (MA) on the push-out bond strength (POBS) and compressive strength (CS) of Biodentine and Bio-C Repair when used for furcal perforation repair. Material and Methods: Sixty extracted human mandibular molars were decoronated, and standardized furcal perforations were created. The teeth were mounted and randomly divided into two groups: Group I, Biodentine, and Group II, Bio-C Repair. Each group was irrigated with 2.5% Sodium Hypochlorite and then subdivided into three: Group A – 17% EDTA, Group B – 7% MA, and Group C – Distilled Water. For CS evaluation, eighteen cylindrical samples of each material were prepared, immersed in NaOCl, and similarly subdivided into three groups based on the irrigant used. All samples were tested using a universal testing machine.
Results: Biodentine showed no significant difference in POBS among the irrigants (p=0.065). Bio-C Repair showed significantly higher POBS with MA and distilled water than with EDTA (p<0.001). Biodentine’s CS was significantly affected by the chelating agents (Control > EDTA > MA), whereas Bio-C Repair showed no significant difference; however, its CS remained lower than that of Biodentine. Conclusion: Chelating agents did not affect Biodentine\u27s POBS, whereas MA improved Bio-C Repair\u27s POBS over EDTA. Despite the reduction, Biodentine\u27s CS remained higher than Bio-C Repair