Effect of high irradiance and short exposure times on the depth of cure of six bulk-fill resin composites.

This study examined the effect of high irradiance and short exposure times on the depth of cure of six resin-based composites (RBCs). Bluephase PowerCure and the Valo X light-curing units (LCUs) were used to photocure bulk-fill RBCs for their recommended exposure times: Admira Fusion x-tra (AFX/20s), Aura Bulk Fill (ABF/20s), Filtek One Bulk Fill (FOB/20s), Opus Bulk Fill APS (OBF/30s), Tetric EvoCeram Bulk Fill (TEC/10s) and Tetric PowerFill (TPF/10s). In addition, all bulk-fill RBCs were tested for depth of cure with one short 3 s exposure time from the Bluephase PowerCure or the Valo X in the Xtra Power mode. The RBCs (n = 10 per RBC) were inserted into a 4 mm diameter metal mold and covered by a polyester strip before being photocured. After 24 h of storage, uncured RBC was scraped away to determine the depth of cure of the RBCs. None of the RBCs achieved a 4 mm depth of cure. The depth of cure of TEC and TPF was unaffected by the exposure times (recommended or short) when using the Valo X. The depth of cure of AFX/20s, AFX/Xtra Power, ABF/Xtra Power, FOB/Xtra Power, and OBF/30s RBCs was greater when using Valo X compared to the Bluephase PowerCure. It was concluded that short exposure times can reduce depth of cure and should only be used for some RBCs.

Stool Glycoproteomics Signatures of Pre-Cancerous Lesions and Colorectal Cancer.

Colorectal cancer (CRC) screening relies primarily on stool analysis to identify occult blood. However, its sensitivity for detecting precancerous lesions is limited, requiring the development of new tools to improve CRC screening. Carcinogenesis involves significant alterations in mucosal epithelium glycocalyx that decisively contribute to disease progression. Building on this knowledge, we examined patient series comprehending premalignant lesions, colorectal tumors, and healthy controls for the T-antigen-a short-chain O-glycosylation of proteins considered a surrogate marker of malignancy in multiple solid cancers. We found the T-antigen in the secretions of dysplastic lesions as well as in cancer. In CRC, T-antigen expression was associated with the presence of distant metastases. In parallel, we analyzed a broad number of stools from individuals who underwent colonoscopy, which showed high T expressions in high-grade dysplasia and carcinomas. Employing mass spectrometry-based lectin-affinity enrichment, we identified a total of 262 proteins, 67% of which potentially exhibited altered glycosylation patterns associated with cancer and advanced pre-cancerous lesions. Also, we found that the stool (glyco)proteome of pre-cancerous lesions is enriched for protein species involved in key biological processes linked to humoral and innate immune responses. This study offers a thorough analysis of the stool glycoproteome, laying the groundwork for harnessing glycosylation alterations to improve non-invasive cancer detection.

Influence of new complete dentures on the touch perception threshold and quality of life of edentulous patients.

OBJECTIVE: To evaluate the touch perception threshold of the alveolar mucosa and quality of life of edentulous patients before (T0) and 30 days after (T1) the insertion of new complete dentures. BACKGROUND: Touch perception is important so that edentulous patients can detect the position of complete dentures in their mouth. MATERIALS AND METHODS: This study included 32 complete denture wearers with good oral and systemic health and no temporomandibular disorders for at least 5 years. At each time point (T0 and T1), two tests were performed (touch perception threshold and quality-of-life scale). The touch perception threshold (Von Frey or Semmes-Weinstein test) was assessed using nylon monofilaments on the regions of the alveolar mucosa of the maxilla and mandible. The Oral Health Impact Profile for edentulous individuals (OHIP-EDENT) was administered to evaluate oral health-related quality of life. RESULTS: In the maxilla and mandible, the touch perception thresholds for all regions of the alveolar mucosa were significantly lower at T1 than at T0. The OHIP-EDENT mean scores showed that the overall quality of life was significantly better at T1 (3.6) than at T0 (4.7), and a significant improvement in quality of life was observed in all domains of the OHIP-EDENT at T1. For touch perception threshold, effect sizes ranged from 0.4 to 0.8; and for quality of life, effect sizes ranged from 0.4 to 1.0. CONCLUSIONS: New complete dentures reduced the touch perception threshold of the alveolar mucosa of both edentulous arches and improved individuals' quality of life.

Comparison of self-etching and conventional bifunctional coupling agent in lithium disilicate ceramic: A systematic review and meta-analysis.

Background: The aim of this systematic review is to determine the effectiveness of self-etching primers in comparison to the conventional protocol with hydrofluoric acid and silane treatment for bonding lithium disilicate ceramics. Material and Methods: The formulated PICO question for this research was: "Does self-etching silane primer surface treatment in lithium disilicate ceramics present a similar bond strength value compared to conventional hydrofluoric acid and silane treatment?". Combinations of words and appropriate truncations were adapted for each database. For the selection, duplicate articles were systematically eliminated using Mendeley software. The Cohen's Kappa statistic was then computed, RoBDEMAT questions were addressed, and the meta-analyses were conducted using RevMan 5.4, at a significance level of 5%. Results: Two independent reviewers conducted a blind and independent analysis of 190219 articles from PubMed, Scopus, Web of Science, and OpenGrey. Subsequently, they extracted data from 21 studies for the systematic review and in 16 the meta-analysis. In all in vitro studies, the most frequently cited concentration of hydrofluoric acid was 5%. In the meta-analysis, no statistical differences were observed between the two treatments concerning bond strength. Conclusions: Self-etching silane primers demonstrate promising results in lithium disilicate bonding, suggesting their potential as an alternative surface treatment to hydrofluoric acids + silane. Key words:Lithium disilicate, Hydrofluoric acid, Dental Porcelain, Ceramics, Silanes.

Visão atual da Revista Odontológica de Araçatuba: divulgação nacional e a caminho da internacionalização com seus artigos publicados / Current view of the Dental Journal of Araçatuba: national dissemination and on the way to internationalization with its published articles

A Revista Odontológica de Araçatuba é um periódico online, de acesso gratuito cujo as publicações são indexadas em importantes bases de dados, divulgando deste modo trabalhos científicos produzidos por instituições do estado de São Paulo e de outros centros de pesquisa de todo o país. O intuito deste trabalho é analisar de modo quantitativo as publicações realizadas no período de 2018 a 2023, as classificando de acordo com a sua natureza (Pesquisa cientifica, Revisão de literatura ou relato de caso) e de acordo com a sua origem (UNESP ­ FOA, misto ou outro centro de ensino) e comparar os resultados obtidos aos dados presentes nos estudos referentes ao período de 2001 a 2011 e ao estudo referente ao período de 2012 a 2017. Foi realizada uma pesquisa bibliográfica que compreendeu as publicações dos anos de 2018 a 2023, abrangendo 18 periódicos e um suplementar, totalizando 167 artigos. Neste intervalo de tempo, houve uma predominância de relatos de casos (55,08%) em comparação as revisões de literatura (22,15%) e as pesquisas cientificas (22,75%). Os artigos oriundos de outros centros de pesquisa foram a maioria (82,03%) e 8 dos artigos presentes foram em língua inglesa. Podemos concluir que a Rev. Odontol. Araçatuba se tornou um periódico de relevância nacional com predominância de compromisso clinico e que está em processo de internacionalização(AU)

The Dental Journal of Araçatuba is an online journal, with free access, whose publications are indexed in important databases, publishing scientific works produced by institutions in the state of São Paulo and other research centers across the country. The purpose of this work is to analyze, in a quantitative way, the publications carried out in the period from 2018 to 2023, classifying them according to their nature (Scientific research, Literature review or case report) and according to their origin (UNESP ­ FOA , mixed or other teaching center) and compare the results obtained with the datas presents in the studies referring to the period from 2001 to 2011 and the study referring to the period from 2012 to 2017. A bibliographical research was carried out that included publications from the years 2018 to 2023, covering 18 periodicals and one supplementary, totaling 167 articles published. In this time period, case report articles predominated (55,08%) compared to literature reviews (22.15%) and scientific research (22,75%). The majority of articles came from other research centers (82.03%) and 8 of the published articles were in English. We can conclude that Journal Dental of Araçatuba became a periodical of national relevance with a predominance of clinical commitment and which is in process of internationalization(AU)

Tratamento reabilitador com prótese obturadora em paciente acometido por maxilectomia parcial: relato de caso / Rehabilitative treatment with obturator prosthesis in a patient suffering from partial maxillectomy: case report

Introdução: O tratamento de tumores malignos ou benignos, podem resultar em procedimentos cirúrgicos, como a maxilectomia parcial ou total, gerando comunicação bucosinusal nos pacientes. Uma forma de resolver estas alterações maxilofaciais é através do tratamento reabilitador com próteses obturadoras a fim de restabelecer a função mastigatória, estética, fonética e psicológica. Objetivo: o objetivo deste trabalho foi relatar o caso clínico de um paciente oncológico que foi reabilitado com prótese obturadora devido à maxilectomia por neoplasia maligna de seio maxilar. Relato de caso: Paciente de 62 anos, sexo masculino, procurou atendimento odontológico no Centro de Oncologia Bucal da Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP) de Araçatuba ­ SP após a realização de uma maxilectomia parcial com comunicação bucosinusal e foi encaminhado para o Curso de Especialização em Prótese Dentária da Faculdade de Odontologia ­ Unesp/Araçatuba-SP para a reabilitação. Foi proposto, primeiramente a realização da prótese obturadora para fechar a comunicação bucosinusal e uma prótese total inferior para o arco antagonista e, posteriormente, a realização de uma prótese facial. Conclusão: O tratamento reabilitador com próteses obturadoras possui um bom resultado estético e funcional, favorecendo uma melhor função mastigatória e fonética, e melhorando consideravelmente a condição psicológica que é muito afetada nos pacientes submetidos a maxilectomia total ou parcial, sendo necessário uma boa interação com toda a equipe multiprofissional envolvida para que haja um melhor tratamento integrado para a reabilitação e melhora da qualidade de vida(AU)

Introduction: The treatment of malignant or benign tumors can result in surgical procedures, such as partial or total maxillectomy, generating oral communication in patients. One way to resolve these maxillofacial changes is through rehabilitative treatment with obturator prostheses in order to reestablish masticatory, aesthetic, phonetic and psychological function. Objective: the objective of this work was to report the clinical case of a cancer patient who was rehabilitated with an obturator prosthesis due to maxillectomy for malignant neoplasia of the maxillary sinus. Case report: A 62-year-old male patient sought dental care at the Oral Oncology Center of the Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP) in Araçatuba ­ SP after undergoing a partial maxillectomy with oral cavity and was referred for the Specialization Course in Dental Prosthesis at the Faculty of Dentistry ­ Unesp/Araçatuba-SP for rehabilitation. It was proposed, firstly, to create an obturator prosthesis to close the bucosinusal communication and a total lower prosthesis for the antagonistic arch and, later, to create a facial prosthesis. Conclusion: Rehabilitative treatment with obturator prostheses has a good aesthetic and functional result, favoring better chewing and phonetic function, and considerably improving the psychological condition that is greatly affected in patients undergoing total or partial maxillectomy, requiring good interaction with the entire the multidisciplinary team involved so that there is better integrated treatment for rehabilitation and improved quality of life

Diagnostic evaluation of institutions as a basis for designing the Brazilian maturity model of telehealth services.

BACKGROUND: The number and specificities of telehealth service units that expanded their services and diversified with the COVID-19 pandemic in Brazil need to be discovered. The objective of this manuscript is to present a methodology for the diagnostic evaluation of 19 telehealth units from different regions of the country for federal governmental decision-making. METHODS: A cross-sectional quantitative and qualitative study was carried out in the form of a census based on administrative records with an online survey and in-depth interviews with local telehealth managers. RESULTS: Despite the discontinuity of regular funding, the results point to a diversity of initiatives and advances. Citizenship, sustainability, security, and budget management are recurring themes in the maturity analysis of telehealth services after the advent of the pandemic. CONCLUSION: It is necessary for Brazil to build a resilient model of the maturity of telehealth services that contemplates the different regional scenarios.

Insulin signaling and mitochondrial phenotype of skeletal muscle are programmed in utero by maternal diabetes.

Maternal diabetes may influence glucose metabolism in adult offspring, an area with limited research on underlying mechanisms. Our study explored the impact of maternal hyperglycemia during pregnancy on insulin resistance development. Adult female Sprague-Dawley rats from control and diabetic mothers were mated, and their female offspring were monitored for 150 days. The rats were euthanized for blood and muscle samples. Maternal diabetes led to heightened insulin levels, increased HOMA-IR, elevated triglycerides, and a raised TyG index in adult offspring. Muscle samples showed a decreased protein expression of AMPK, PI3K, MAPK, DRP1, and MFF. These changes induced intergenerational metabolic programming in female pups, resulting in insulin resistance, dyslipidemia, and glucose intolerance by day 150. Findings highlight the offspring's adaptation to maternal hyperglycemia, involving insulin resistance, metabolic alterations, the downregulation of insulin signaling sensors, and disturbed mitochondrial morphology. Maintaining maternal glycemic control emerges as crucial in mitigating diabetes-associated disorders in adult offspring.

[Effect of Aging on the Mechanical Properties of CAD/CAM-Milled and 3D-Printed Acrylic Resins for Denture Bases].

PURPOSE: The purpose of this study was to investigate the mechanical properties of acrylic resins at different aging times for denture bases manufactured using the conventional method, microwave processing, milling, and 3D printing. MATERIALS AND METHODS: A total of 160 rectangular samples (64 Å~ 10 Å~ 3.3 ± 0.03 mm) were prepared, divided among the four main resin groups, and subdivided into four analysis times (T0, T1, T2, and T3), resulting in 10 samples per subgroup. The samples were stored in distilled water at 37° ± 2°C for 24 hours (T0), then subjected to thermocycling at temperatures of 5° ± 1°C and 55° ± 1°C in different numbers of cycles: 5,000 (T1); 10,000 (T2); and 20,000 (T3). The mechanical properties evaluated were surface microhardness, flexural strength, and modulus of elasticity. Statistical differences between resin groups and aging time were evaluated using two-way analysis of variance (P < .05). RESULTS: The 3D-printed resin showed the significantly lowest values of microhardness, flexural strength, and modulus of elasticity compared to other resins (P < .001). CONCLUSIONS: The CAD/CAM-milled denture resin showed mechanical properties similar to those of traditional resins (conventional and microwave-processed). The 3D-printing resin did not show adequate mechanical properties for long-term clinical use. Despite this, new studies are developing better properties of this resin for long-term use.

Steel drills versus zirconia drills on heat generation at the surgical site of dental implants: A systematic review and meta-analysis.

Objective: The aim was to evaluate the difference in the heat generated between zirconia (Zr) and steel (SS) drills, during implant site preparation. Material and methods: This systematic review followed the PRISMA methodology criteria and used the JBI Critical Assessment Guidelines for Quasi-Experimental Studies for quality assessment. The electronic search was conducted by using the PubMed/MEDLINE, Embase, and Cochrane Library databases to January 2023. The formulated population, intervention, comparison, outcome (PICO) question was "Do zirconia drills generate less heat than steel drills during implant site preparation?". The meta-analysis was based on an inverse variance (IV) method. Results: This review included 10 studies in vitro that used zirconia drills compared to steel drills with or without coatings. The meta-analysis indicated a significant difference between Zr drills and SS drills, with a lower bone temperature variation with Zr drills. Conclusions: Despite the limitations of this review, it was concluded that Zr drills had significantly less temperature variation than SS drills.

Minimizing false positives for CTC identification.

BACKGROUND: Cancer is a leading cause of death worldwide, with metastasis playing a significant role. Circulating Tumour Cells (CTCs) can provide important real-time insights into tumour heterogeneity and clonal evolution, making them an important tool for early diagnosis and patient monitoring. Isolated CTCs are typically identified by immunocytochemistry using positive biomarkers (cytokeratin) and exclusion biomarkers (CD45). However, some white blood cell (WBC) populations can express low levels of CD45 and stain non-specifically for cytokeratin, increasing their risk of misclassification as CTCs. There is a clear need to improve CTC detection and enumeration criteria to unequivocally eliminate interfering WBC populations. RESULTS: This study showed that, indeed, some granulocyte subpopulations expressed low levels of CD45 and stained non-specifically for cytokeratin, misidentifying them as CTCs. These same cells, however, strongly expressed CD15, allowing them to be identified as WBCs and excluded from CTC classification. Flow cytometry confirmed the specificity of the CD15 antibody for the granulocyte subpopulation. False positives were considerably reduced from 25 % to 0.2 % by double exclusion, combining a CD15 antibody with a highly specific CD45 antibody. Furthermore, complete elimination of potential false positives was achieved using double exclusion in combination with improved selection of cytokeratin antibody. The study emphasises the importance of a robust exclusion criteria and high antibody specificity in CTC immuno-assays for accurate identification of CTC candidates and thorough exclusion of interfering WBC subpopulations. SIGNIFICANCE: This study demonstrated how misidentifying a granulocyte subpopulation can lead to inaccurate CTC evaluation. However, sensitivity and specificity of CTC identification may be improved by using high-performing antibodies and by including a second exclusion biomarker, in turn, allowing for a more comprehensive clinical application of CTCs.

Large-Vessel Vasculitis and Q Fever Correlation.

Q fever is a zoonotic infection caused by the pathogen Coxiella burnetii, and patients can present with a wide spectrum of clinical manifestations, depending on whether it is an acute or a chronic infection. We present the case of a 61-year-old male with fatigue, posterior thoracalgia, intermittent fever, night sweats and weight loss for a month. After an extensive workup, he was diagnosed with acute Q fever with large-vessel vasculitis. The FDG-PET/CT scan suggested an active vasculitis specifically in the thoracic aorta, proximal abdominal aorta, subclavian and carotid vessels, suggesting an immunologic response to acute Q fever infection, barely reported worldwide. LEARNING POINTS: Large-vessel vasculitis is a possible immunologic response to acute Q fever infection.There are few data about the management and treatment of patients with Q fever related large-vessel vasculitis.

Correlation between Periotest value and implant stability quotient: a systematic review.

OBJECTIVES: To determine, through clinical studies, whether there is a correlation between the Periotest value (PTV) and the implant stability quotient (ISQ). CONTENT: Methods to evaluate the stability of dental implants. SUMMARY: A search was performed in the PubMed, Scopus, and Web of Science databases for articles on the proposed subject up to January 29, 2023, using search terms that combined "resonance frequency analysis" and "Periotest" with "correlation" or "relationship"; and combinations of "implant stability quotient" and "Periotest" with "correlation" or "relationship." The inclusion criteria were clinical studies in English involving human subjects who received dental implants and evaluating the correlation between PTV and ISQ. A total of 46 articles were screened, of which 10 were selected for full-text analysis, and eight articles were included in this review. Based on three articles, 75 % of the results of this systematic review showed a negative correlation between PTV and ISQ, regardless of the type of stability assessed. Based on the remaining five articles, 100 % (regardless of the patient's gender) and 66.66 % of the results showed a negative correlation for primary and secondary stability, respectively. There is a negative correlation between PTV and ISQ for both primary and secondary dental implant stability. OUTLOOK: This review can serve as a reference for the development of methodologies for future clinical studies on this topic.

Effect of Chlorhexidine and Tea Tree Oil on Reducing the Number of Oral Microorganisms.

OBJECTIVES: Thus, the aim of this study was to compare the effect of using two preoperative mouthwashes (0.12% chlorhexidine and 0.2% tea tree oil) on the number of colonies of oral microorganisms. MATERIALS AND METHODS: Forty participants who needed to be rehabilitated with dental implants were included in this study. They were randomly divided into two groups (chlorhexidine group and tea tree group; n = 20, each). For each group, saliva samples were collected at four different times: T0 (initially)-before using the mouthwash, T1-after 1 minute of using the mouthwash, T10-after 10 minutes of using the mouthwash, and T60-after 60 minutes of using the mouthwash. At T0 and T1, saliva samples were collected before implant placement surgery, and at T10 and T60, saliva samples were collected during surgery. In each group, one saliva sample was collected at each evaluated time point for each patient, totaling 4 saliva collections per patient. MSB agar (Mitis-Salivarius-Bacitracin) and BHI agar (Brain Heart Infusion) culture media were used in each group. Microbial colony counts were performed using a magnifying glass and recorded in CFU (colony forming units)/mL. Statistical analyses were performed using the Friedman, Mann-Whitney U and Wilcoxon tests (p < 0.05). RESULTS: Based on MSB agar culture medium, at T0, the number of Streptococcus mutans colonies in the chlorhexidine group was significantly higher compared with the tea tree group (p <0.05; MSB agar). The chlorhexidine group showed significantly lower CFU/mL values for Streptococcus mutans at T1, T10, and T60 compared with the tea tree group (p <0.05; MSB agar). Based on BHI agar culture medium, at T0, the chlorhexidine group showed a significantly lower value of CFU/mL compared with the tea tree group (p < 0.05; BHI agar). At T1, T10, and T60, the chlorhexidine group showed significantly lower CFU/mL values compared with the tea tree group (p <0.05; BHI agar). CONCLUSION: Chlorhexidine is more indicated as a preoperative mouthwash than tea tree oil, due to its significantly more effective antimicrobial action.

A saúde de adolescentes na volta às atividades escolares presenciais após dois anos de pandemia do Covid-19 ­ estudo transversal de base escolar em Pelotas/RS / The health of adolescents returning to face-to-face school activities after two years of the Covid-19 pandemic - school-based cross-sectional study in Pelotas/RS / La salud de los adolescentes que retornan a las actividades escolares presenciales después de dos años de la pandemia de Covid-19 - estudio transversal escolar en Pelotas/RS

O objetivo do estudo foi comparar a percepção sobre a massa corporal, comportamentos relacionados à saúde, e a saúde mental de escolares adolescentes durante o período de retorno às atividades escolares presenciais com o período anterior à pandemia de COVID-19. O estudo foi realizado com 425 escolares (16,96±1,39 anos; 60,2% do sexo feminino) selecionados aleatoriamente de escolas das redes pública e privada de Pelotas/RS. Para a coleta dos dados foi utilizado um questionário de autopreenchimento contendo perguntas retrospectivas e atuais sobre as variáveis analisadas. Os resultados indicaram que a percepção sobre a massa corporal, o nível de atividade física, o tempo de sono, e a saúde mental (apenas para as meninas) estão piores (p<0,05) no momento atual quando comparados ao período anterior à pandemia. Por outro lado, hábitos alimentares e tempo de tela recreativo apresentaram melhores resultados (p<0,05) no momento atual do que no período anterior à pandemia. Estes resultados mostram um complexo panorama em relação à saúde de adolescentes no período de retomada das atividades presencias, tornando o retorno às atividades escolares presenciais um desafio para os próprios adolescentes, seus familiares, para professores, e para as escolas.

The aim of this study was to compare the perception of body mass, health- related behaviors and mental health of adolescent schoolchildren during the period of return to face to face school activities with the period before COVID-19 pandemic. The study was carried out with 425 students (16.96±1.39 years; 60.2% female) randomly selected from public and private schools in Pelotas/RS. For data collection, a self-completion questionnaire was used, containing retrospective and current questions about analyzed outcomes. The results indicated that the perception of body mass, level of physical activity, sleep time, and mental health (only for girls) are worse (p<0.05) at present when compared to the period before the pandemic. On the other hand, eating habits and recreational screen time showed better results (p<0.05) at present than in the period before the pandemic. These results show a complex panorama concerning the health of adolescents in the period of resumption of face to face activities, making this return a challenge for the adolescents themselves, their families, teachers and for schools.

El objetivo de este estudio fue comparar la percepción de masa corporal, comportamientos relacionados a la salud y salud mental de escolares adolescentes durante el período de retorno a las actividades escolares presenciales con el período anterior a la pandemia de COVID-19. El estudio fue realizado con 425 alumnos (16,96±1,39 años; 60,2% del sexo femenino) seleccionados aleatoriamente de escuelas públicas y privadas de Pelotas/RS. Para la recolección de datos, se utilizó un cuestionario auto-completado, conteniendo preguntas retrospectivas y actuales sobre los resultados analizados. Los resultados indicaron que la percepción de la masa corporal, el nivel de actividad física, el tiempo de sueño y la salud mental (sólo para las niñas) son peores (p<0,05) en la actualidad en comparación con el período anterior a la pandemia. Por otro lado, los hábitos alimentarios y el tiempo de pantalla recreativo mostraron mejores resultados (p<0,05) en la actualidad que en el periodo anterior a la pandemia. Estos resultados muestran un panorama complejo en relación a la salud de los adolescentes en el período de reanudación de las actividades presenciales, haciendo de este retorno un desafío para los propios adolescentes, sus familias, profesores y para las escuelas.

Complete Denture - Border Molding Technique Using a Laboratory Condensation Silicone Putty: Review.

During the fabrication of a complete denture, functional impression is taken. Literature studies show that polydimethylsiloxane (condensation silicone) has not been reported by United States dental schools to perform border molding. Thus, the purpose of this article is to review the functional impression technique when border molding is performed with a laboratory condensation silicone putty.

Removable Partial Denture - Functional Impression Techniques: Review.

The objective of this article is to concisely review the main clinical techniques used to make the functional impression to manufacture a removable partial denture. Through this review, the dentist can develop his clinical knowledge.

Functional maturation of human iPSC-derived pyramidal neurons in vivo is dependent on proximity with the host tissue.

Human induced pluripotent stem cells (hiPSCs) have been used extensively in vitro to model early events in neurodevelopment. Because of a number of shortcomings, previous work has established a potential to use these cells in vivo after transplantation into the mouse brain. Here, we describe a systematic approach for the analysis of transplanted hiPSC-derived neurons and glial cells over time in the mouse brain. Using functional two-photon imaging of GCaMP6f- expressing human neural cells, we define and quantify the embryonic-like features of their spontaneous activity. This is substantiated by detailed electron microscopy (EM) of the graft. We relate this to the synaptic development the neurons undergo up to 7 months in vivo. This system can now be used further for the genetic or experimental manipulation of developing hiPSC-derived cells addressing neurodevelopmental diseases like schizophrenia or Autism Spectrum Disorder.

Atividade física, sintomatologia depressiva e autopercepção do envelhecimento em idosas ativas de Porto Alegre-RS / Physical activity, depressive symptoms and self-perception of aging in active elderly women in Porto Alegre-RS

Objetivo: analisar a relação entre a atividade física, a sintomatologia depressiva e a autopercepção do envelhecimento em idosas socialmente ativas do município de Porto Alegre/RS. Método: os instrumentos utilizados foram o questionário geral, a Escala Geriátrica de Depressão (GDS), o Questionário de Autopercepção do Envelhecimento (APQ); Questionário Internacional de Atividade Física (IPAQ). A pesquisa foi composta por amostra 167 idosas, realizada entre 2016 a 2017. Resultados: na autopercepção de envelhecimento, as subescalas controle positivo e consequência positiva apresentaram as maiores médias na amostra total. Na GDS, 22,2% das idosas apresentaram sintomatologia depressiva, não tendo relação com a faixa etária. No nível de atividade física, as tarefas domésticas e que as mantém ativa. Conclusões: houve associação significativa inversa da prática de atividade física, com os escores de consequência negativa e controle negativo. Também da prática de atividade física no domínio do lazer com os escores de consequência negativa e sintomas depressivos.(AU)

Objective: to analyse the relationship between physical activity, depressive symptoms, and self-perception of aging in socially active elderly women in the city of Porto Alegre/RS. Method: the instruments used were the general questionnaire, the Geriatric Depression Scale (GDS), the Aging Self-Perception Questionnaire (APQ); International Physical Activity Questionnaire (IPAQ). The research consisted of a sample of 167 elderly women, carried out between 2016 and 2017. Results: in self-perception of aging, the positive control and positive consequence subscales presented the highest means in the total sample. In the GDS, 22.2% of elderly women presented depressive symptoms, unrelated to age group. In terms of physical activity, household chores keep them active. Conclusions: there was a significant inverse association between physical activity and negative consequence and negative control scores. Also, the practice of physical activity in the leisure domain with negative consequence scores and depressive symptoms.(AU)

Objetivo: analizar la relación entre la actividad física, los síntomas depresivos y la autopercepción del envejecimiento en mujeres mayores socialmente activas de la ciudad de Porto Alegre / RS. Método: los instrumentos utilizados fueron el cuestionario general, la Escala de Depresión Geriátrica (GDS), el Cuestionario de Autopercepción del Envejecimiento (APQ); Cuestionario Internacional de Actividad Física (IPAQ). La investigación estuvo compuesta por una muestra de 167 mujeres mayores, realizada entre 2016 y 2017. Resultados: en la autopercepción del envejecimiento, las subescalas de control positivo y consecuencia positiva presentaron las medias más altas en la muestra total. En el GDS, el 22,2% de las ancianas presentaron síntomas depresivos, no relacionados con el grupo de edad. En cuanto a la actividad física, las tareas del hogar los mantienen activos. Conclusiones: hubo una asociación inversa significativa entre la actividad física y las puntuaciones de consecuencias negativas y de control negativo. También la práctica de actividad física en el ámbito del ocio con puntuaciones de consecuencias negativas y síntomas depresivos.(AU)

Halitosis and Pain Threshold of Peri-Implant Tissues: An Observational Cohort Study.

In this study, we aimed to evaluate the halitosis and pain threshold of the peri-implant soft tissues in individuals rehabilitated with implant-supported prostheses. Forty-eight subjects were divided into four groups (n = 12) according to their prosthetic rehabilitation: single-tooth fixed prosthesis, multi-tooth fixed prosthesis, overdentures, and the Brånemark protocol. Halitosis was measured using a halimeter, whereas the pain threshold was measured using Von Frey monofilaments. Measurements were taken before (t0) and 30 days after (t1) placement of healing caps, and at the time of (t2) and 30 days after (t3) prosthetic placement. Halitosis data were analyzed using the chi-square test and Bonferroni correction (p < 0.05). Two-way ANOVA and Tukey's test (p < 0.05) were used to analyze pain threshold data. We noted an association between halitosis and time for the Brånemark protocol [X2(6) = 18.471; p = 0.005] and overdenture groups [X2(6) = 17.732; p = 0.007], and between halitosis and type of prosthesis only at t0 [X2(6) = 12.894; p = 0.045]. The interaction between time and the type of prosthesis significantly interfered with the mean pain threshold values (p = 0.001). At most time points, the majority of participants in each group had clinically unacceptable halitosis. After 30 days of using the prostheses, the overdenture group had a lower pain threshold compared to the Brånemark protocol group.