Background: Mesenchymal stromal cells (MSCs) are multipotent progenitor cells used in several cell therapies. MSCs are characterized by the expression of CD73, CD90, and CD105 cell markers, and the absence of CD34, CD45, CD11a, CD19, and HLA-DR cell markers. CD90 is a glycoprotein present in the MSC membranes and also in adult cells and cancer stem cells. The role of CD90 in MSCs remains unknown. Here, we sought to analyse the role that CD90 plays in the characteristic properties of in vitro expanded human MSCs. Methods: We investigated the function of CD90 with regard to morphology, proliferation rate, suppression of T-cell proliferation, and osteogenic/adipogenic differentiation of MSCs by reducing the expression of this marker using CD90-target small hairpin RNA lentiviral vectors. Results: The present study shows that a reduction in CD90 expression enhances the osteogenic and adipogenic differentiation of MSCs in vitro and, unexpectedly, causes a decrease in CD44 and CD166 expression. Conclusion: Our study suggests that CD90 controls the differentiation of MSCs by acting as an obstacle in the pathway of differentiation commitment. This may be overcome in the presence of the correct differentiation stimuli, supporting the idea that CD90 level manipulation may lead to more efficient differentiation rates in vitro.
Resumo O presente trabalho evidenciou o processo de trabalho do cirurgião-dentista (CD) no setor de saúde suplementar a partir da visão do profissional, sob a luz da Bioética de Intervenção. Foi realizado um estudo observacional-seccional do tipo inquérito circunscrito à região do Distrito Federal. Os dados foram coletados por meio de 108 questionários respondidos por CDs credenciados à duas modalidades de operadora: autogestão e odontologia de grupo, com a finalidade de conhecer a percepção e o grau de satisfação profissional diante do mercado de trabalho odontológico. A insatisfação maior por parte dos profissionais foi relacionada à remuneração dos trabalhos odontológicos pelas operadoras. Para a operadora de autogestão 1, 38,1% dos profissionais responderam que a remuneração era satisfatória, enquanto para a de autogestão 2 e odontologia de grupo, houve 100% de insatisfação. Outro dado encontrado foi que a operadora de odontologia de grupo restringiu os tratamentos selecionados aos pacientes de forma expressiva. Conclui-se que existe a perda de autonomia profissional, desvalorização dos ressarcimentos e precarização do trabalho odontológico na saúde suplementar, demonstrando conflitos éticos nessa relação de trabalho.
Cystic Fibrosis (CF) is an autosomal recessive disease characterized by the production of thick and viscous mucus progressively affecting various organs and systems, with recurrent respiratory infections. The aim of this study was to learn about the oral health characteristics in CF patients. Methodology: Data, such as sociodemographic, general and oral health, were collected from the medical records of CF patients aged 0 to 18 years old. The number of patients with tooth decay, prevalence of developmental defects of enamel (DDE), classification of dental occlusion, sialometry, salivary pH and oral microbial profile and respiratory secretions evaluations were recorded. Results: Most patients had pancreatic insufficiency (84.2%), malnutrition (60%), respiratory problems (75.4%) and genotyping of the F508del (66.7%). Regarding the medications used, 96.5% used vitamins and electrolyte replacement, 84,02% used pancreatic enzymes, 64.9% used dornase alfa and 47% were using antibiotics. The percentage of patients with tooth decay was 19.3%, 47% had DDE, low salivary flow and basic salivary pH. The most prevalent microorganisms found on tongue biofilm and respiratory secretions were SA and PA. There was a positive association between the presence of bacteria and fungi found on both the tongue and respiratory secretions. The presence of fungi on the tongue biofilm was significantly associated with the use of antibiotics. Conclusions: These findings underscore the importance of dentists focusing on prevention and on the specific needs of the patient as well.
Os índices elevados de lesões cariosas em crianças e adolescentes podem resultar em exposição da polpa ou até mesmo na perda precoce do dente decíduo, situação que exige atuação minimamente invasiva do cirurgião-dentista, visando preservar o dente na cavidade bucal. A pulpotomia, um tipo de terapia pulpar vital que visa tratar de forma reversível as injúrias relacionadas à câmara pulpar, utiliza diferentes técnicas com a finalidade de manter o dente vital na cavidade bucal até a sua esfoliação. Objetivo: evidenciar a eficácia da técnica de Laser terapia de Baixa Intensidade (LBI) comparada com o Hidróxido de Cálcio no procedimento de pulpotomia de dentes decíduos. Materiais e método: A pesquisa foi um ensaio clínico longitudinal com nove molares decíduos de crianças com idade entre 5 e 12 anos. Foram realizadas avaliações clínicas e radiográficas após os períodos de 1, 2, 3 e 6 meses. Resultados: Observou-se índice de sucesso clínico quanto à ausência de dor, de sensibilidade à percussão, de inchaço anormal e, radiograficamente, de ausência de reabsorção interna ou de externa ou lesão de furca em 100% dos casos. Conclusão: O LBI demonstra benefícios como a ausência de dor, o efeito anti-inflamatório e a ausência de efeitos adversos. Desta forma, sugere-se que o LBI possa ser considerado uma técnica alternativa para pulpotomia na prática clínica. Porém recomenda-se mais estudos clínicos sobre o assunto.
15 June 2026 in Revista de Odontopediatría Latinoamericana
Anxiety, fear and phobia regarding dental treatment are present in a large part of the population. As an effective method for controlling anxiety, sedation is currently present in dental offices, acting positively in contributing to care. In pediatric dentistry, fear of care is caused mainly by the fact that the environment is new and unknown, and sometimes it is necessary to use sedative drugs, so that care is efficient, fast and safe. This study is a case report involving two pediatric patients who presented a phobia towards dental treatment who underwent sedation performed in an outpatient clinic under the supervision of an anesthetist. We conclude that drug sedation is a technique that should be considered in cases where there has been no success in behavioral management to control aversive behavior in pediatric patients who have phobia and the incorporation of this technique allows for safe and effective dental care.