Fotogrametría de modelos dentales de yeso

El presente estudio busca definir los parámetros de la cámara fotográfica y encuadre de la imagen para generar fotografías estandarizadas a modelos dentales de yeso que permitan realizar mediciones intermaxilares a través de fotogrametría, y que estas distancias sean tan confiables y válidas como el registro físico. Se realizó medición directa de los modelos con compás de Korkhaus y medición indirecta a través de fotogrametría digital, evaluando si existía diferencia estadística entre ambas mediciones. Como resultado, no se observaron diferencias significativas entre el protocolo digital con un objetivo 100 mm y magnificación 1:4 en comparación con las mediciones directas, por lo que se concluye que con los parámetros seleccionados se logra una adecuada precisión en la fotogrametría respecto a la medición directa.

This study aims to compare the different parameters of the photographic camera with the digital image framing to standardize dental model photography, in order to take intermaxillary measurements through photogrammetry, and so that these distances are as reliable and valid as the physical record. Direct measurement of the models was made with a Korkhaus compass, and indirect measurement through digital photogrammetry, evaluating whether there was a statistical difference between both measurements. As a result, no significant differences were observed between the digital protocol with a 100 mm objective and 1:4 magnification and the direct measurements. It is concluded that with the selected parameters, adequate precision is achieved in photogrammetry, when compared to the direct measurement.

Are patients with knee osteoarthritis aware that platelet-rich plasma is a treatment option?

Osteoarthritis (OA) is a prevalent joint disease, particularly affecting the knees. This condition is often managed through various treatments, including intra-articular injections such as corticosteroids (CS), hyaluronic acid (HA), and platelet-rich plasma (PRP). PRP has shown promising outcomes in recent studies although it does lack strong endorsement in some clinical guidelines due to inconsistent results and lack of standardized results. This study was conducted to assess patient awareness and the frequency of PRP offered for the treatment of knee OA, compared to CS and HA. In a cross-sectional study, 46 knee OA patients were surveyed regarding their knowledge and experiences of CS, HA, and PRP injections. The questionnaires were administered between September 2022 and February 2023. Additionally, the study evaluated the severity of patients knee OA, using the Western Ontario and McMaster Universities Arthritis Index, and gathered demographic information from the participants. CS injections were offered to 93.5%, and 100% of participants had previously heard of this type of injection. HA injections were offered to 37%, and 65.9% of participants had heard of them. PRP was offered to 2%, and 6.5% had ever heard of it. This study underscores the limited awareness and utilization of PRP among knee OA patients. Patients and physicians need to be more informed of all of the treatment options available for knee OA, especially orthobiologics such as PRP. Future research in larger, diverse populations is needed.

Aprendizaje servicio virtual: prácticas profesionales de terapia ocupacional a través de la telesalud en contexto de confinamiento / Aprendizagem em serviço virtual: práticas profissionais de terapia ocupacional através da telessaúde no contexto do confinamento / Virtual service learning: professional practices of occupational therapy through telehealth in the context of confinement

El objetivo de este estudio es analizar los aportes y desafíos que se presentan en la formación y en la intervención cuando estudiantes de terapia ocupacional realizan su práctica profesional a través de la telesalud, durante el periodo de confinamiento por pandemia Covid-19. Se utiliza como enfoque metodológico una sistematización de experiencia de tipo cualitativa. Se produce la información por medio de cuatro grupos focales y diez entrevistas semiestructuradas. Se realiza un análisis del contenido temático. Se establecen cuatro temas: 1) vínculo terapéutico y Aprendizaje-Servicio por telesalud, 2) aprendizajes alcanzados por telesalud, 3) lo que no se aprende fácilmente por telesalud y 4) prácticas pedagógicas de apoyo al aprendizaje en telesalud. Esta modalidad se potenciaría si se cuenta con la tecnología adecuada, si las atenciones son frecuentes y si se prepara a los cuidadores-familiares para apoyar los procesos de atención.

The objective of this study is to analyze the contributions and challenges that arise in training and intervention when occupational therapy students carry out their professional practice through telehealth, during the period of confinement due to the Covid-19 pandemic. A qualitative systematization of experience is used as a methodological approach. The information is produced through four focus groups and ten semi-structured interviews. An analysis of the thematic content is carried out. Four themes are established: 1) therapeutic link and Service-Learning through telehealth, 2) learning achieved through telehealth, 3) what is not easily learned through telehealth and 4) pedagogical practices to support learning in telehealth. This modality would be enhanced if there is adequate technology if care is frequent and if family caregivers are prepared to support the care processes.

O objetivo deste estudo é analisar as contribuições e desafios que surgem na formação e intervenção quando os estudantes de terapia ocupacional realizam a sua prática profissional através da telessaúde, durante o período de confinamento devido à pandemia de Covid-19. Uma sistematização qualitativa da experiência é utilizada como abordagem metodológica. As informações são produzidas por meio de quatro grupos focais e dez entrevistas semiestruturadas. É realizada uma análise do conteúdo temático. São estabelecidos quatro temas: 1) vínculo terapêutico e aprendizagem-serviço por meio da telessaúde, 2) aprendizagem alcançada por meio da telessaúde, 3) o que não se aprende facilmente por meio da telessaúde e 4) práticas pedagógicas de apoio à aprendizagem em telessaúde. Essa modalidade seria potencializada se houvesse tecnologia adequada, se o cuidado fosse frequente e se os cuidadores familiares estivessem preparados para apoiar os processos de cuidado.

Análisis desde una perspectiva ocupacional al uso de la telesalud en terapia ocupacional en tiempos de confinamiento / Análise sob a perspectiva ocupacional do uso da telesaúde na terapia ocupacional em tempos de confinamento / Analysis from an occupational perspective of the telehealth use in occupational therapy in times of confinement

Resumen Introducción Las acciones adoptadas con el propósito de evitar los contagios comunitarios, durante la pandemia por COVID-19, significó una interrupción ocupacional ya que estas medidas impidieron o restringieron la participación en ocupaciones significativas de las personas. Al mismo tiempo, las distintas instituciones sanitarias y los profesionales del área de la salud tuvieron que acudir a la telesalud para dar continuidad a la atención y cuidados. Objetivo Analizar desde una perspectiva ocupacional el uso de la telesalud en Terapia Ocupacional en contextos de confinamiento. Metodología De tipo cualitativa. La información se produce a través de grupos de discusión y entrevistas individuales. Participaron de este estudio 9 estudiantes, 10 docentes, 5 usuarios/as y/o familiares y 5 integrantes de los equipos de atención. Se realizó un análisis del contenido temático a través de la triangulación de actores para integrar las opiniones de todos/as los/as participantes, posteriormente con el fin de profundizar desde una perspectiva ocupacional el uso de la telesalud se incluye la triangulación teórica. Resultados La telesalud como ocupación materializa la posibilidad de contar con apoyo socioemocional y permite la colaboración en busca del bienestar en tiempos de aislamiento social. También es una ocupación que permitió reconocer el hogar como un territorio, en el que se produce la apropiación de recursos materiales y relacionales de una manera colaborativa entre el equipo tratante y los/as usuarios/as. Conclusiones La telesalud es una ocupación colectiva que permite la re-existencia en tiempos de interrupción ocupacional y de nuevas formas de dislocación ocupacional.

Resumo Introdução As ações adotadas com o objetivo de evitar infecções comunitárias, durante a pandemia de COVID-19, significaram uma interrupção ocupacional, uma vez que essas medidas impediram ou restringiram a participação em ocupações significativas de pessoas. Ao mesmo tempo, as diferentes instituições de saúde e profissionais de saúde tiveram que recorrer à telessaúde para dar continuidade aos cuidados. Objetivo Analisar numa perspetiva ocupacional a utilização da telessaúde em Terapia Ocupacional em contextos de confinamento. Metodologia Qualitativa. A informação é produzida através de grupos focais e entrevistas individuais. Participaram deste estudo 9 alunos, 10 professores, 5 usuários e/ou familiares e 5 integrantes das equipes assistenciais. É realizada uma análise do conteúdo temático através da triangulação de atores para integrar as opiniões de todos os participantes, posteriormente para aprofundar o uso da telessaúde do ponto de vista ocupacional, inclui-se a triangulação teórica. Resultados A telessaúde como ocupação materializa a possibilidade de ter suporte socioemocional e permite a colaboração na busca do bem-estar em tempos de isolamento social. É também uma ocupação que permitiu reconhecer a casa como um território, no qual a apropriação de recursos materiais e relacionais ocorre de forma colaborativa entre a equipe de tratamento e os usuários. Conclusões: A telessaúde é uma ocupação coletiva que permite a reexistência em tempos de interrupção ocupacional e novas formas de deslocamento ocupacional.

Abstract Introduction The actions adopted with the purpose of avoiding community infections, during the COVID-19 pandemic, meant an occupational interruption since these measures prevented or restricted the participation in significant occupations of people. At the same time, the different health institutions and health professionals had to resort to telehealth to provide continuity of care. Objective To analyze from an occupational perspective the use of telehealth in Occupational Therapy in confinement contexts. Methodology Qualitative. Information is produced through focus groups and individual interviews. 9 students, 10 teachers, 5 users and/or family members and 5 members of the care teams participate in this study. An analysis of the thematic content is carried out through the triangulation of actors to integrate the opinions of all the participants, later in order to deepen the use of telehealth from an occupational perspective, theoretical triangulation is included. Results Telehealth as an occupation materializes the possibility of having socio-emotional support and allows collaboration in search of well-being in times of social isolation. It is also an occupation that allowed recognizing the home as a territory, in which the appropriation of material and relational resources occurs in a collaborative way between the treatment team and the users. Conclusions Telehealth is a collective occupation that allows re-existence in times of occupational interruption and new forms of occupational dislocation.

Medium-chain fatty acids as an alternative treatment for denture stomatitis in older people.

OBJECTIVE: To determine the effect of medium-chain fatty acids (MCFA) on the severity of denture stomatitis (DS) and the counts of Candida spp. in older people (OP) wearing removable prostheses (RP). MATERIALS AND METHODS: This randomized, controlled and triple-blind study included forty-three OP presenting DS. The control group was treated with 0.12% chlorhexidine (CHX) and the experimental group with MCFA, 2 × /day for 15 days. Intraoral examination and counts of Candida spp. were performed at 0, 7, and 15 days. The differences between both groups in the decrease of the severity of DS and the viability of Candida spp. were determined clinically and microbiologically, respectively. RESULTS: OP carriers of RP treated with MCFA presented remission of the clinical signs of DS, but the Candida spp. counts only decreased significantly in the CHX-treated group at 7 days of treatment (p < 0.05). Besides, MCFA was shown to reduce the clinical signs of DS after the first week of application, while CHX after the second week. CONCLUSIONS: The MCFA is effective in reducing the clinical signs of DS associated with oral candidiasis in subjects with RP. Both treatments showed a significant decrease in severity, for MCFA after the first week and for CHX two weeks after starting the corresponding treatment. CLINICAL RELEVANCE: The MCFA is an effective, harmless, and accessible treatment alternative against DS, since it manages to reduce the severity of the lesion in the milder cases of DS in the oral mucosa of OP carriers of RP.

Estudio de la variación de la inclinación de la cabeza y la evolución de la dentición - Parte I: Dentición Primaria Completa y Mixta Primera Fase

Objetivo: estudiar y comparar la inclinación de la cabeza entre niños con dentición primaria completa y dentición mixta primera fase. Materiales y métodos: el estudio incluyó a 80 voluntarios entre 4 y 9 años, a quienes se les tomó una fotografía facial de perfil derecho estandarizada, en Posición Natural de Cabeza. Éstas fueron analizadas mediante software de edición de imágenes para determinar la inclinación de la cabeza de cada voluntario. Para ello, se definió un plano (plano t-ex) formado por el punto Intertrágico (t) y Exocanto (ex) y se comparó respecto a la horizontal verdadera. Los datos obtenidos fueron tabulados, clasificados en dos grupos según el tipo de dentición y analizados estadísticamente. Resultados: el promedio de inclinación del plano t-ex fue de 22,7º en el grupo de niños con dentición primaria completa y de 25,8º en el grupo de niños con dentición mixta primera fase. La diferencia entre ambos grupos fue de 3,1º, con significancia estadística (p = 0,006). Conclusión: la inclinación de la cabeza de los niños con dentición mixta primera fase es mayor en sentido antihorario, respecto a la de los niños con dentición primaria completa.

Objective: to study and compare head tilt among children with complete primary dentition and first transitional period of the mixed dentition stage. Materials and methods: the study included 80 volunteers between 4 and 9 years of age, who were taken a standardized right profile facial photograph in a Natural Head Position. These photographs were analyzed using image editing software to determine the head tilt of each volunteer. For this, a plane (plane t-ex) formed by the Intertragic point (t) and Exocanth (ex) was defined and compared with respect to the true horizontal. The data obtained were tabulated, classified into two groups according to the type of dentition and statistically analyzed. Results: the average t-ex plane inclination was 22.7º in the group of children with complete primary dentition and 25.8º in the group of children with first transitional period of the mixed dentition stage. The difference between both groups was 3.1º, with statistical significance (p = 0.006). Conclusion: the head tilt of children with first transitional period of the mixed dentition stage is greater in an anti-clockwise direction, compared to that of children with complete primary dentition.

Efecto de la simulación háptica en la autoeficacia académica de odontólogos en formación

La simulación es un recurso ampliamente utilizado en los procesos formativos en odontología, especialmente para adquirir destrezas motrices y potencialmente en el desarrollo de la autoeficacia. Objetivo: Evaluar el efecto de la simulación háptica en la autoeficacia académica de odontólogos en formación. Materiales y métodos: Este estudio se centró en estudiantes de un curso de anticipación disciplinar (n=134). Se aplicó la escala de autoeficacia general después de dos actividades de tallado con apresto tradicional, mediadas por una sesión de tallado con simulación háptica. Resultados: Al determinar el rol de las dimensiones de autoeficacia en dos actividades de simulación tradicional (ABT1 y ABT2), mediadas por la háptica se obtuvo un promedio de ABT1: x̄=3,27 (n=123) y de ABT2: x̄=3,20 (n=105). De los diez ítems de la escala, hubo diferencia estadística respecto a la disminución del grado de autoeficacia en el Nº1 (p=0,05) y Nº6 (p=0,01). Conclusiones: Se puede establecer que, al utilizar un simulador háptico de manera complementaria a las de apresto tradicional, la intervención influye en la autoeficacia, puesto que se adquiere mayor conciencia de las complejidades asociadas, debiendo desafiar su propia autorregulación para hacerles frente.

Simulation is a widely used resource in dental training processes, especially to acquire motor skills and potentially in the development of self-efficacy. Objective: To evaluate the effect of haptic simulation in the academic self-efficacy of dentists in training. Materials and methods: This study focused on students of a curricular anticipatory course (n=134). The general self-efficacy scale was applied after two carving activities with a traditional approach, complemented by a carving session with haptic simulation. Results: When determining the role of the self-efficacy dimensions in two traditional simulation activities (ABT1 and ABT2) complemented by haptics, we obtained an average of ABT1: x̄=3,27 (n=123) and ABT2: x̄=3,20 (n=105). Of the ten items of the scale, there was a statistical difference regarding the decrease in the degree of self-efficacy in Nº1 (p=0,05) and Nº6 (p=0,01). Conclusions: It can be established that complementing traditional training with a haptic simulator influences self-efficacy, since the students become more aware of the associated complexities, and need to challenge their own self-regulation to deal with them.

Asociación entre la inclinación sagital del incisivo central superior y el ángulo nasolabial en ortodoncia

Objetivo: determinar si existe asociación entre la inclinación del incisivo central superior y el ángulo naso-labial de Legan. Materiales y métodos: se utilizaron las telerradiografías laterales de cráneo de 20 pacientes entre 18 y 39 años, obtenidas al inicio y final de su tratamiento ortodóncico, para un análisis cefalométrico. El total de medidas obtenidas se ordenó en dos tiempos. Tiempo 1 (T1) incluyó la medición del ángulo plano biespinal-eje mayor del incisivo superior (AiT1) y del ángulo naso-labial (AnlT1) en las radiografías tomadas previo al tratamiento y tiempo 2 (T2) incluyó la medición de los mismos ángulos en las radiografías tomadas al finalizar el tratamiento (AiT2 y AnlT2 respectivamente). Los datos obtenidos fueron tabulados y analizados estadísticamente. Resultados: la muestra presentó distribución normal, por lo que se aplicó el test de correlación de Pearson, para determinar si existía asociación entre ambas variables (Ai y Anl) en T1 y T2, obteniendo como resultado un valor de R=0,5. Conclusión: no existe asociación estadística entre la variación en la inclinación del incisivo central superior y el Ángulo naso-labial de Legan.

Aim: to determine if there is an association between the inclination of the upper central incisor and the nasolabial Legan angle. Materials and methods: lateral head radiographs of 20 patients between 18 and 39 years old, obtained at the beginning and end of their orthodontic treatment, were used for a cephalometric analysis. The total of measurements obtained was ordered in two times. Time 1 (T1) included the measurement of the bispinal plane angle-major axis of the upper incisor (AiT1) and the nasolabial angle (AnlT1) in the radiographs taken before treatment and time 2 (T2) included the measurement of the same angles, in the radiographs taken at the end of the treatment (AiT2 and AnlT2 respectively). The data obtained were tabulated and statistically analyzed. Results: the sample presented a normal distribution. So, the Pearson correlation test was applied to determine if there was an association between both variables (Ai and Anl) in T1 and T2, obtaining a value of R=0.5 as a result. Conclusion: there is no statistical association between the variation in the inclination of the upper central incisor and the nasolabial Angle of Legan.

Estudio de la variación de la inclinación de la cabeza y la evolución de la dentición - Parte III

El objetivo de esta investigación fue estudiar la variación de la Posición Natural de Cabeza (PNC) entre personas con dentición mixta segunda fase y dentición permanente, mediante fotogrametría facial. Para esto se realizó un estudio comparativo observacional analítico. La muestra estuvo conformada por 80 voluntarios divididos en dos grupos de 40 participantes cada uno. Se utilizó fotografías faciales de perfil estandarizadas en PNC. Mediante el software Photoshop® se trazó el plano Intertrágico-Exocanto (t-ex) y se midió el ángulo formado respecto a la horizontal verdadera para determinar la inclinación de la PNC. El valor de este ángulo se obtuvo mediante el software UTHSCSA ImageTool 3.0®. Los datos fueron tabulados en una planilla Excel (Microsoft® Excel® 2016) y analizados estadísticamente en el programa Stata 14 S/E®. Se observaron diferencias estadísticas en la inclinación de la PNC entre los grupos, con valores promedio 26.17° y 33.44° para dentición mixta segunda fase y permanente respectivamente, con una diferencia promedio de 7.27°. Se concluyó que la PNC de personas con dentición permanente presenta una rotación antihoraria respecto a personas con dentición mixta segunda fase.

This research aimed at studying the variation of the Natural Head Position (NHP) between people with second transitional mixed dentition and permanent dentition, using facial photogrammetry. For this, an analytical observational comparative study was performed. The sample consisted of 80 volunteers divided into two groups of 40 participants each. Using standardized profile facial photographs in NHP and Photoshop® software, the intertragic-exocanthion plane (t- ex) was traced. The angle formed to the true horizontal was measured to determine the inclination of the NHP using the UTHSCSA ImageTool 3.0® software. The data were tabulated in an Excel Spreadsheet (Microsoft® Excel® 2016) and analyzed with Stata 14 S/E® software. Statistical differences in the inclination of the NHP between groups were observed, with average values ​​of 26.17° for second transitional mixed dentition and 33.44° for permanent dentition, with an average difference of 7.27°. It was concluded that the NHP of people with permanent dentition shows an anti-clockwise rotation in relation to people with second transitional mixed dentition.

Educación ambiental en tiempos de crisis socio-ambiental: posibilidades de su inclusión en la formación de terapia ocupacional, desde la perspectiva de las/os docentes / Educação ambiental em tempos de crise socioambiental: possibilidades de sua inclusão na formação em terapia ocupacional, desde a perspectiva de docentes / Environmental education in times of social-environmental crisis: possibilities of its inclusion in occupational therapy training, from the academics' perspective

Resumen Introducción La crisis socio-ambiental es un tema relevante y existe una urgencia en su reflexión y búsqueda de soluciones en todas las áreas del conocimiento. Este estudio, usando como base la educación ambiental, se hace parte de dicha necesidad desde la formación profesional en terapia ocupacional. Objetivo Analizar las posibles relaciones entre la educación ambiental y la formación disciplinar, a partir de la perspectiva de los y las terapeutas ocupacionales que se dedican a la docencia universitaria en la provincia de Concepción, Chile. Método Metodología cualitativa con la realización de 7 entrevistas individuales a terapeutas ocupacionales que se desempeñan como docentes universitarios. La información se somete a un análisis de contenido temático y triangulación teórica. Resultados Existen fundamentos teóricos y éticos en la disciplina vinculados a la naturaleza, que pueden ser incluidos en la formación profesional. Se plantea que esta temática debe ser abordada de manera transversal en la formación. Las metodologías de enseñanza más acordes para su implementación serían de carácter teórico práctico como el aprendizaje basado en proyectos o el aprendizaje de servicio. Las acciones basadas en la naturaleza pueden ser enseñadas como una estrategia de intervención al servicio del cuidado de la naturaleza, y al mismo tiempo para el cuidado de las personas y comunidades. Conclusiones Se invita a incluir la educación ambiental en la formación de terapeutas ocupacionales, dado que es una herramienta potente para avanzar en la protección y conservación el medio ambiente.

Resumo Introdução A crise socioambiental é um tema relevante e há urgência em sua reflexão e busca de soluções em todas as áreas do conhecimento. Este estudo, tendo como base a educação ambiental, torna-se parte dessa necessidade de formação profissional em terapia ocupacional. Objetivo Analisar as possíveis relações entre educação ambiental e formação disciplinar, desde a perspectiva de terapeutas ocupacionais que se dedicam ao ensino universitário na província de Concepción, Chile. Método Metodologia qualitativa, com a realização de sete entrevistas individuais com terapeutas ocupacionais que atuam como professores universitários. A informação é submetida a uma análise de conteúdo temática e triangulação teórica. Resultados Existem fundamentos teóricos e éticos nas disciplinas ligadas à natureza, que podem ser incluídos na formação profissional. Propõe-se que esta temática seja abordada de forma transversal na formação. As metodologias de ensino mais adequadas para a sua implementação seriam de natureza teórico-prática, como a aprendizagem baseada em projetos ou a aprendizagem em serviço. As ações baseadas na natureza podem ser ensinadas como uma estratégia de intervenção ao serviço do cuidado da natureza e, ao mesmo tempo, do cuidado das pessoas e das comunidades. Conclusão Convida-se a incluir a educação ambiental na formação de terapeutas ocupacionais, pois é uma ferramenta poderosa para avançar na proteção e conservação do meio ambiente.

Abstract Introduction The socio-environmental crisis is a relevant issue and there is an urgency in its reflection and search for solutions in all areas of knowledge. This study, using environmental education as a base, becomes part of this need from professional training in occupational therapy. Objective To analyze the possible relationships between environmental education and disciplinary training, from the perspective of occupational therapists who are dedicated to university teaching in the province of Concepción, Chile. Method Qualitative methodology through 7 individual interviews with occupational therapists who work as university academics. The information is subjected to a thematic content analysis and theoretical triangulation. Results There are theoretical and ethical foundations in the discipline linked to nature, which can be included in professional training. It is proposed that this issue should be addressed transversally in training. The most appropriate teaching methodologies for its implementation would be of a theoretical-practical nature, such as project-based learning or service learning. Nature-based actions can be taught as an intervention strategy at the service of caring for nature, and at the same time for caring for people and communities. Conclusions It is invited to include environmental education in the training of occupational therapists, since it is a powerful tool to advance in the protection and conservation of the environment.

Tutorías virtuales postpandemia: implicancias en los aprendizajes de estudiantes de terapia ocupacional que cursan sus prácticas profesionales / Tutoriais virtuais pós-pandemia: implicações para a aprendizagem de estudantes de terapia ocupacional que estão realizando suas práticas profissionais / Postpandemic virtual tutorials: implications for the learning of occupational therapy students who are doing their professional practices

Resumen Introducción Los efectos de la virtualización en los aprendizajes de los/as estudiantes de la educación superior son aún inciertos, durante el año 2022 se retoman las actividades presenciales y otras se mantienen en el formato on-line. Estas últimas son objeto de este estudio. Objetivo Identificar los alcances y desafíos de las tutorías virtuales sincrónicas, realizadas en periodo postpandemia, a partir de la experiencia y opinión de docentes y estudiantes de terapia ocupacional de una universidad chilena. Metodología Metodología de carácter mixto, a través de un grupo focal con 11 docentes y por medio de un cuestionario contestado por 76 estudiantes. Se realiza análisis del contenido temático de los datos cualitativos y estadística descriptiva los datos cuantitativos. Para la integración de la información producida se utiliza la triangulación de datos. Resultados Las tutorías virtuales sincrónicas son útiles para la adquisición de varios aprendizajes como la capacidad de articular la teoría con la práctica, siendo un espacio que favorece la contención emocional, ofrece apoyo mutuo a los/as estudiantes y permite el desarrollo de un pensamiento social, reflexivo y situado. Simultáneamente, los hallazgos dan cuenta de la preferencia por parte de los/as estudiantes por el aprendizaje individual por sobre la necesidad de producir aprendizajes y conocimientos de manera colaborativa en tiempos postpandemia. Conclusiones Se sugiere contar en las tutorías virtuales sincrónicas con un importante número y variedad de metodologías y que éstas consideren los contextos en los que se realiza la práctica profesional.

Resumo Introdução Os efeitos da virtualização na aprendizagem dos alunos do ensino superior ainda são incertos, durante o ano de 2022 as atividades presenciais foram retomadas e outras permaneceram no formato online. Estas últimas são objeto deste estudo. Objetivo Identificar o alcance e os desafios das tutorias virtuais síncronas, realizadas no período pós-pandemia, com base na experiência e opinião de professores e alunos de curso de graduação em terapia ocupacional de uma universidade chilena. Metodologia Metodologia mista, com informação produzida através de um grupo focal com 11 professores e através de um questionário respondido por 76 alunos. É realizada análise de conteúdo temática dos dados qualitativos e estatística descritiva dos dados quantitativos. Para a integração das informações produzidas, utiliza-se a triangulação de dados. Resultados As tutorias virtuais síncronas são úteis para a aquisição de vários tipos de aprendizagem, como a capacidade de articular a teoria com a prática, caracterizando-se como um espaço que favorece o apoio emocional, oferece apoio mútuo aos alunos e permite o desenvolvimento do pensamento social, reflexivo e situado. Simultaneamente, os achados mostram a preferência dos alunos pela aprendizagem individual em detrimento da necessidade de produzir aprendizagem e conhecimento de forma colaborativa em tempos pós-pandemia. Conclusões Sugere-se um número significativo e variado de metodologias nas tutorias virtuais síncronas e que estas considerem os contextos em que se desenvolve a prática profissional.

Abstract Introduction The effects of virtualization on the learning of higher education students are still uncertain, during the year 2022 face-to-face activities returned and others remained in the online format. The latter is the subject of this study. Objective To identify the scope and challenges of synchronous virtual tutorials, carried out in the post-pandemic period, based on the experience and the opinion of occupational therapy professors, and students from a Chilean university. Methodology A mixed methodology is used; information is produced through a focus group with 11 professors and through a questionnaire answered by 76 students. Analysis of the thematic content of the qualitative data and descriptive statistics of the quantitative data is carried out. For the integration of the information produced, data triangulation is used. Results Synchronous virtual tutorials are useful for the acquisition of various types of learning such as the ability to articulate theory with practice. They are space that favors emotional support, offers mutual support to students, and allows the development of social thinking, reflection, and situated. Simultaneously, the findings show the preference by the students for individual learning over the need to produce learning and knowledge collaboratively in post-pandemic times. Conclusions It is suggested to have a significant number and variety of methodologies in synchronous virtual tutorials and that these consider the contexts in which professional practice is carried out.

Tackling Antibiotic Resistance: Influence of Aliphatic Branches on Broad-Spectrum Antibacterial Polytriazoles against ESKAPE Group Pathogens.

One of the most important threats to public health is the appearance of multidrug-resistant pathogenic bacteria, since they are the cause of a high number of deaths worldwide. Consequently, the preparation of new effective antibacterial agents that do not generate antimicrobial resistance is urgently required. We report on the synthesis of new linear cationic antibacterial polytriazoles that could be a potential source of new antibacterial compounds. These polymers were prepared by thermal- or copper-catalyzed click reactions of azide and alkyne functions. The antibacterial activity of these materials can be modulated by varying the size or nature of their side chains, as this alters the hydrophilic/hydrophobic balance. Antibacterial activity was tested against pathogens of the ESKAPE group. The P3TD polymer, which has butylated side chains, was found to have the highest bactericidal activity. The toxicity of selected polytriazoles was investigated using human red blood cells and a human gingival fibroblast cell line. The propensity of prepared polytriazoles to induce resistance in certain bacteria was studied. Some of them were found to not produce resistance in methicillin-resistant Staphylococcus aureus or Pseudomonas aeruginosa. The interaction of these polytriazoles with the Escherichia coli membrane produces both depolarization and disruption of the membrane.

Estudio comparativo de la posición natural de cabeza entre las clases esqueléticas mediante fotogrametría facial / Comparative study of the natural head position between skeletal classes using facial photogrammetry

El objetivo de esta investigación es evaluar si existen diferencias en la inclinación de la Posición Natural de Cabeza (PNC) entre las clases esqueléticas, mediante fotogrametría. Para esto se realizó un estudio observacional analítico de corte transversal. La muestra fue de 45 voluntarios de entre 18 y 50 años. Se determinó la clase esquelética mediante análisis de Steiner y Wits, en radiografías laterales de cráneo, utilizando el software BlueSkyPlan®. A cada participante se le tomó una fotografía de perfil en PNC. Posteriormente, en Photoshop®, se trazó un plano entre los puntos tragion y exocanto (plano t-ex) y la horizontal verdadera, para finalmente medir el ángulo formado en el programa UTHSCSA ImageTool3.0®, determinando así la inclinación de la cabeza. Luego de tabular los datos, se realizaron análisis estadísticos. Este estudio evidenció una diferencia de 6,68° en promedio en la inclinación de la PNC entre los pacientes clase II y I esquelética, con significación estadística, por lo que se concluye que los pacientes clase II esquelética tienen una PNC más inclinada en sentido horario respecto a los pacientes clase I, en la muestra analizada. Los pacientes clase III no mostraron diferencias.

The objective of this research is to evaluate the differences in the inclination of the Natural Head Position (NHP) between skeletal classes, using photogrammetry. For this, a cross-sectional analytical observational study was carried out. The sample consisted of 45 volunteers between 18 and 50 years old. The skeletal class was determined by Steiner and Wits analysis, in lateral skull radiographs, using the BlueSkyPlan® software. Each participant had a profile photograph taken at NHP. A plane was drawn between the tragion and exocanthion points and the true horizontal using Photoshop®, and the angle was measured using UTHSCSA ImageTool3.0® software, assessing the inclination of the head. After data tabulation, statistical analyses were performed. This study showed an average difference of 6.68° in the inclination of the NHP between skeletal class II and I patients, with statistical significance. It was concluded that skeletal class II patients have a more inclined NHP in a clockwise direction compared to class I patients, in the analyzed sample. Class III patients did not show differences.

Protocolo fotográfico estandarizado para análisis facial en Posición Natural de Cabeza / Standardized photographic protocol for facial analysis in Natural Head Position

RESUMEN: Introducción: La fotogrametría es el proceso por el que se obtienen medidas a partir de una fotografía. Para realizar una correcta toma fotográfica es de suma importancia estandarizar la técnica con el objetivo de obtener registros confiables y reproducibles. Uno de sus requisitos es definir la posición de la cabeza, ya que una postura incorrecta puede conducir a errores en el diagnóstico y planificación del tratamiento. Objetivo: Establecer un protocolo clínico para estandarizar registro fotográfico y posicionamiento del paciente para fotogrametría facial. Materiales y métodos: Se realizaron fotografías faciales estandarizadas a un total de 163 estudiantes. A 76 estudiantes se les realizaron mediciones faciales directas e indirectas. A 87 estudiantes se les comparó su Posición Natural de Cabeza en 3 momentos del día. Se compararon estadísticamente los resultados. Resultados: Al aplicar un protocolo estandarizado, no hubo diferencia estadística entre las medidas directas e indirectas ni al comparar la posición de la cabeza de cada estudiante. Conclusión: La estandarización del set fotográfico expuesto en este trabajo es válida para realizar registros fiables y útiles como examen complementario utilizando la Posición Natural de Cabeza, que permite mantener una posición confiable y estable en el tiempo.

ABSTRACT: Introduction: Photogrammetry is the process by which measurements are obtained from a photograph. To take a correct photographic shoot, it is very important to standardize the technique in order to obtain reliable and reproducible records. One of its requirements is to define the position of the head. Thus, an incorrect posture can lead to errors in diagnosis and treatment planning. Objective: Establish a clinical protocol to standardize photographic registration and patient positioning for facial photogrammetry. Materials and methods: Standardized facial photographs were taken to a total of 163 students. 76 students had direct and indirect facial measurements. 87 students had their Natural Head Position compared at 3 times of the day. The results were statistically compared. Results: When applying a standardized protocol, there was no statistical difference between direct and indirect measurements, nor when comparing the head position of each student. Conclusion: The standardization of the photographic set exposed in this work is valid for making reliable and useful records as a complementary examination using the Natural Head Position, which allows to maintain a reliable and stable position over time.

Terapia miofuncional, maloclusión y disfunción orofacial: Evaluación fotogramétrica del perfil / Myofunctional therapy, malocclusion and orofacial dysfunction: Profile photogrammetric evaluation

RESUMEN: El objetivo de este estudio observacional analítico es determinar el efecto de la Terapia Miofuncional en el perfil facial de voluntarios con maloclusión y disfunción orofacial, mediante fotogrametría. En una muestra de 15 pacientes, se midieron indirectamente mediante fotogrametría en el Software Blue Sky Plan® las siguientes variables cefalométricas: Ángulo Nasolabial, Prominencia Labial y Plano Estético. Se realizó toma de fotografías al comenzar la Terapia Miofuncional (primera sesión) y al finalizarla (décima sesión). Para comparar valores obtenidos en el mismo voluntario en cada variable cefalométrica entre principio y final de terapia, análisis estadísticos fueron realizados. Se determinó que no hay diferencia estadística en valores obtenidos en ninguna de las variables cefalométricas al comparar el inicio con el final de terapia. Por consiguiente, se concluyó que la Terapia Miofuncional no tiene un efecto significativo en estas variables de perfil facial en voluntarios con maloclusión y disfunción orofacial medidas mediante fotogrametría, pese a cambios funcionales percibidos por pacientes y evaluadores. Es fundamental poder realizar un diagnóstico riguroso y posterior derivación a Fonoaudiología, si corresponde, para lograr equilibrio funcional en los pacientes y reducir riesgo de progresión o reaparición de Anomalías Dentomaxilares.

ABSTRACT: This analytical observational study aimed to determine the effect of Myofunctional Therapy on the facial profile in volunteers with malocclusion and orofacial dysfunction, through photogrammetry. Fifteen patients were recruited, and the following cephalometric variables were measured indirectly through photogrammetry in the Blue Sky Plan Software (Blue Sky Bio®): Nasolabial Angle, Lip Prominence and Aesthetic Plane. Previous photographs were taken, at the beginning of Myofunctional Therapy (first session) and the end (tenth session). To compare the values of each variable in a volunteer between the beginning and end of therapy, statistical analyses were performed. There was no statistical difference in the values obtained in any of these variables when comparing the beginning and the end of myofunctional therapy. Therefore, it was concluded that myofunctional therapy does not have a statistically significant effect on these facial profile variables in volunteers with malocclusion and orofacial dysfunction measured by photogrammetry, despite the functional changes perceived by patients and evaluators. However, it is essential to perform a rigorous diagnosis and subsequent referral to speech therapy, if applicable, to achieve functional balance in the patients and reduce progression or recurrence risk of Dentomaxillary Abnormalities.

Posición Natural de Cabeza y su relación con el Plano de Frankfurt en cefalometría ortodóncica / Natural head position and its relationship with the Frankfurt Plane in orthodontic cephalometry

RESUMEN: Objetivo: el objetivo de este estudio fue determinar la discrepancia del Plano de Frankfurt evaluado en fotogrametría y en cefalometría de radiografías laterales de cráneo respecto a la horizontal verdadera. Materiales y métodos: el estudio consideró a 34 voluntarios de la clínica del Postítulo de Ortodoncia y Ortopedia Dento Máxilo Facial de la Facultad de Odontología de la Universidad de Chile. Se utilizaron sus radiografías laterales de cráneo orientadas según el Plano de Frankfurt paralelo al piso y se les tomó una fotografía facial de perfil estandarizada en Posición Natural de Cabeza. Se trazó el Plano de Frankfurt y la Horizontal Verdadera en ambos exámenes y se midió el ángulo formado entre estos planos. Resultados: al comparar los ángulos mediante T-test, no hubo diferencia estadística. Conclusiones: mediante la aplicación de un protocolo sistematizado tanto para el registro fotográfico como para la obtención de la Posición Natural de Cabeza, se puede lograr que el Plano de Frankfurt sea prácticamente coincidente en radiografías laterales de cráneo y en fotografías clínicas, demostrando su uso hasta el día de hoy en la ortodoncia moderna.

ABSTRACT: Objective: the aim of this study was to determine the Frankfurt plane variation evaluated in photogrammetry and lateral skull x-ray cephalometry in relation to the true horizontal. Materials and methods: the study included 34 volunteers from the Universidad de Chile Dento-maxillofacial Orthodontics and Orthopedics Postgraduate Clinic. Their lateral skull radiographs, oriented according to the Frankfurt Plane parallel to the floor, were used and a standardized profile facial photograph was taken in Natural Head Position. The Frankfurt Plane and True Horizontal were drawn in both examinations and the angle formed between these planes was measured. Results: when comparing the angles through T-test, there was no statistical difference. Conclusions: through the application of a systematized protocol for both photographic record and natural head position obtained, the Frankfurt Plane can be practically coincident in lateral skull x-rays and clinical photographs, showing its usefulness up to the present days in modern orthodontics.

Case Report: Virtual Reality Neurofeedback Therapy as a Novel Modality for Sustained Analgesia in Centralized Pain Syndromes.

Neurofeedback (NFB) Therapy is a form of biofeedback, using the electroencephalogram (EEG) that has been in use since the 1970s, serving as a non-pharmacological intervention for epilepsy and psychiatric conditions such as anxiety, depression, insomnia, PTSD, post-concussive syndrome, and now, centralized pain. Chronic pain can increase neuronal activity and eventually causes poor modulation of pain messages. With the emergence of Virtual Reality (VR) in acute pain management, and the contraindications of opioids in chronic pain, applying novel biotechnologies seems like the next frontier in multimodal pain management. In this study, the VR and NFB technologies were fused together (VR-NFB) and used as a novel treatment modality for a 55-year-old woman who suffered from chronic pain secondary to spondylolisthesis with cervical, thoracic, and lumbar disc herniations after a motor vehicle accident with comorbid depression, anxiety, sleep deprivation, and difficulty with activities of daily living, and inability to participate in physical therapy. Our case reports on the sustained analgesia achieved for 1 year after a trial of VR-NFB, and the usefulness of neuromodulation in centralized pain syndromes.

Regiospecific vs. non regiospecific click azide-alkyne polymerization: In vitro study of water-soluble antibacterial poly(amide aminotriazole)s.

Novel linear cationic poly(amide aminotriazole)s (PATnD) with secondary amine groups in the backbone were obtained by using azide-alkyne 1,3-dipolar cycloaddition reactions: metal- and solvent-free (thermal conditions, PATTnD) or copper(I)-catalyzed (Sharpless conditions, PATCnD). PATnD were investigated in vitro against strains of E. coli, P. aeruginosa, S. aureus, and S. epidermidis. Hemolytic activity was tested using human red blood cells (hRBC), and very low or no hemolytic activity was observed. The cytotoxicity of PATnD polymers against Human Gingival Fibroblasts (HGnF) cells was concentration-dependent, and significant differences between PATT1D and PATC1D were observed. The ability of these polymers to induce resistance against both Gram-positive and Gram-negative bacteria was also assessed. Studied bacterial strains acquired resistance to catalytic polymers (PATCnD) in initial passages meanwhile resistance to thermal polymers (PATTnD) appears in later passages, being the increase of the minimum inhibitory concentration lower than in catalytic polymers. This result, together with the higher biocidal capacity of thermal polymers compared to catalytic ones, seems to suggest an influence of the regiospecificity of the polymers on their antibacterial characteristics. This study also demonstrates that PAT1D polymers, which do not appear to have strong hydrophobic residues, can exert significant antimicrobial activity against Gram-positive bacteria such as S. epidermidis. This pair of polymers, PATC1D and PATT1D, displays the greatest antimicrobial activity while not causing significant hemolysis along with the lowest susceptibility for resistance development of the polymers evaluated.

Estudio Descriptivo de las Cirugías y Hospitalizaciones en Cirugía Maxilofacial Durante la Pandemia en Chile. Experiencia del Hospital Barros Luco Trudeau

RESUMEN: Desde la aparición del SARS-CoV-2 se ha establecido, en la mayoría de los países afectados por esta pandemia, la suspensión de toda cirugía electiva, centrando la atención solo a urgencias. Son varios los estudios que mencionan las recomendaciones necesarias, sin embargo, hasta el minuto existe poca evidencia de la cantidad y tipo de cirugías realizadas por los servicios de Cirugía Maxilofacial. El objetivo del presente trabajo es dar a conocer la epidemiología de los pacientes tratados por el equipo de cirugía maxilofacial en el Hospital Barros Luco Trudeau de Santiago, Chile. Se realizó un estudio de corte transversal entre Marzo y Agosto del 2020, de todos los paciente atendidos por la unidad de Cirugía Maxilofacial del Hospital. Se analizó datos epidemiológicos como también el tipo de patología, la etiología, días de estadía hospitalaria y días de espera para cirugía. La muestra estuvo constituida por 41 pacientes, 20 % mujeres y 80 % hombres. El rango etario fue de 17 a 92 años, con un promedio de 40,39 años (DE 17,67). En al diagnóstico, el 61 % correspondió a patología traumática y el 39 % a patología infecciosa. El trauma más frecuente fue la fractura mandibular parasinfisiaria (23 %) y la infección más frecuente, la infección secundaria a quistes y tumores (25 %). A pesar del periodo de pandemia con las restricciones asociadas a la cuarentena, la muestra se comporta similar a estudios previamente reportados tanto en la distribución por sexo y edad, así como en el tipo el trauma.

ABSTRACT: Since the appearance of SARS-CoV-2, the suspension of all elective surgery has been established in most of the countries affected by this pandemic, focusing only on emergency. There are several studies that mention the necessary recommendations, however, until now there is little evidence of the amount and type of surgeries performed by the different Maxillofacial Surgery services. The objective of this study is to present the epidemiology of the patients treated by the maxillofacial surgery team at the Barros Luco Trudeau Hospital of Santiago, Chile. Material and method: A cross-sectional study was carried out between April and August 2020, of all the patients treated by the Maxillofacial Surgery unit of the Hospital. Epidemiological data were analyzed as well as the type of pathology, the etiology, days of hospital stay and days of waiting for surgery. Results: The sample consisted of 41 patients, 20 % women and 80 % men. The age range was from 17 to 92 years, with an average of 40.39 years (SD 17.67). At diagnosis, 61 % corresponded to traumatic pathology and 39 % to infectious pathology. The most frequent trauma was the parasymphyseal mandibular fracture (23 %) and the most frequent infection, infection secondary to cysts and tumors (25 %). Despite the pandemic period with the restrictions associated with quarantine, the sample behaves similar to previously reported studies, both in the distribution by sex and age, as well as in the type of trauma.

Contribuciones de las actividades de extensión académica en la formación de terapeutas ocupacionales, desde la perspectiva de los estudiantes / Contribuições das atividades de extensão acadêmica na formação de terapeutas ocupacionais, na perspectiva dos estudantes / Contributions of academic extension activities in the training of occupational therapists, from the students´ perspective

Resumen Introducción Este texto presenta la experiencia acumulada durante 10 años en las Jornadas de Terapia Ocupacional del Bio Bio en Chile, actividad de extensión académica y recreativa en la cual se tratan temas relevantes para la formación de terapeutas ocupacionales. Objetivo Analizar los principales aprendizajes y contribuciones a la formación profesional de las metodologías de enseñanza que se exponen en estas Jornadas, a través de la opinión de los estudiantes que han participado como asistentes. Método se desarrolla una sistematización, ya que esta metodología permite la reflexión crítica a partir de la experiencia vivida. La información se produce a través de entrevistas a 12 estudiantes. Se realiza análisis del contenido de temas predefinidos, que corresponden a pensamiento crítico, herramientas para la intervención y valores compartidos. Resultados El grupo de estudiantes valoran las metodologías de carácter práctico, participativas y dialogantes que permitan compartir opiniones y experiencias. Las herramientas que se adquieren corresponden a habilidades relacionales que facilitan el trato y manejo terapéutico. Los valores compartidos que los estudiantes identifican se encuentran presentes en las Jornadas incluyen la solidaridad, el respeto a la diversidad y la empatía. Conclusiones Las actividades de extensión académica enriquecen la formación profesional porque acerca a los estudiantes con la realidad social, fortalecen la identidad disciplinar y promoverían su formación ciudadana. Los desafíos de las actividades de extensión son generar transformaciones en las vidas cotidianas de los/as sujetos/as de intervención, y que éstos/as puedan participar activamente en los ajustes curriculares de los planes de estudios.

Resumo Introdução Este texto apresenta a experiência acumulada ao longo de 10 anos na Conferência de Bio Bio Terapia Ocupacional no Chile, uma atividade de extensão acadêmica e recreativa na qual são discutidos temas relevantes para a formação de terapeutas ocupacionais. Objetivo Analisar as principais aprendizagens e contribuições das metodologias de ensino expostas nestes Congressos para a formação profissional, através da opinião dos alunos que participaram como assistentes. Método desenvolveu-se uma sistematização, uma vez que esta metodologia permite a reflexão crítica a partir da experiência vivida. As informações foram produzidas por meio de entrevistas com 12 alunos e efetuada análise de conteúdo de temas predefinidos, que corresponderam ao pensamento crítico, ferramentas de intervenção e valores partilhados. Resultados O grupo de alunos valoriza as metodologias de carácter prático, participativo e dialógico que lhes permitem partilhar opiniões e experiências. As ferramentas adquiridas correspondem a habilidades relacionais que facilitam o tratamento e o manejo terapêutico. Os valores partilhados que os alunos identificaram presentes na Conferência incluem solidariedade, respeito pela diversidade e empatia. Conclusões As atividades de extensão acadêmica enriquecem a formação profissional, pois aproxima os alunos da realidade social, fortalece a identidade disciplinar e promove sua formação cidadã. Os desafios das atividades de extensão são gerar transformações no cotidiano dos sujeitos da intervenção e que eles possam participar ativamente das adequações curriculares dos planos de estudos.

Abstract Introduction This text shows the experience accumulated over 10 years in the Bio Bio Occupational Therapy Conference in Chile, an academic extension and recreational activity in which relevant topics for the training of occupational therapists are discussed. Objective To analyze the main learning and contributions to the professional training of the teaching methodologies that are exposed in this conference, through the opinion of the students who have participated as assistants. Method systematization is developed since this methodology allows critical reflection from the lived experience. The information is produced through interviews with 12 students. Analysis of the content of predefined topics is carried out, which correspond to critical thinking, tools for intervention, and shared values. Results The group of students values the methodologies of a practical, participatory, and dialogue nature that allow them to share opinions and experiences. The tools that are acquired correspond to relational skills that facilitate treatment and therapeutic management. The shared values that the students identify are present in the conference, including solidarity, respect for diversity, and empathy. Conclusions The academic extension activities enrich professional training because it brings students closer to social reality, strengthens disciplinary identity and promotes their citizenship training. The challenges of extension activities are to generate transformations in the daily lives of the intervention subjects, and that they can actively participate in the curricular adjustments of the study plans.