Transformación de leucoplasia verrugosa proliferativa en carcinoma oral: diez años de seguimiento

Los autores presentan un caso de leucoplasia verrugosa proliferativa (LVP) en varón de 78 años de edad. Fue inicialmente presentado como un caso de leucoplasia en lengua pero un estudio microscópico en 1991 reveló la presencia de displasia epitelial leve. Tras 5 años de seguimiento, la lesión sufrió cambios de tamaño y localización y tuvo comportamiento recidivante. En 1996, un área eritematosa granular e indurada que apareció en lengua resultó ser un carcinoma de células escamosas microinvasivo cuando se estudió microscópicamente. Tras una revisión del comportamiento clinicopatológico de esta entidad, los autores concluyeron que se trataba de una leucoplasia verrugosa proliferativa, cuyo diagnóstico es difícil y retrospectivo, como indicaban otros autores. Los autores enfatizan la importancia del examen periódico detallado clínico e histológico de este tipo de lesiones con el fin de detectar signos de malignidad precozmente.The authors present a case of proliferative verrucous leukoplakia (PVL) in a 78-year-old man. It was initially presented as leukoplakia on the tongue but a microscopic investigation in 1991 revealed it to be a mild epithelial dysplasia. After 5 years of follow-up, the lesion presented changes in size and location, and a recidivant behavior. In 1996, a red granular and indurated area that appeared on the tongue was found to be a microinvasive squamous cell carcinoma when microscopically investigated. After a review of the clinicopathologic behavior of this entity, the authors concluded that it was a typical PVL, whose diagnosis is difficult and retrospective, as indicated by others. The authors emphasize the importance of periodic detailed clinical and histological examination of this type of lesions in order to detect early signs of malignancy

Avaliação do conhecimento sobre a infecção HIV de estudantes de odontologia antes e após palestra informativa

The knowledge about HIV infection and AIDS is essential to the dentist. So they should be prepared in the use of measures of cross infection control. The purpose of this research is to evaluate the general and specific knowledge about HIV infection, of the dental students before and after an informative lecture on the subject. In the first stage of the evaluation 160 questionnaires, were given to the students. In the second stage, 3 months later, they went to a 15 minutes lecture about the HIV infection, afterwards another 160 questionnaires were given to the same students. In the questionnaires filled before the lecture the total success index was of 49% and of mistakes was 45.9%. After the lecture those values were 54.4% and 40.8% respectively. We concluded that even after the informative lecture the students presented a high mistake index and little assimilation of the subject, indicating that just 15 minutes of lecture was insufficient for a subject of great importance. The graduation dental students need more information on the HIV infection as well as up to date informative aspects.O conhecimento sobre a infecção HIV é essencial aos profissionais de odontologia para que estejam preparados quanto ao uso das medidas de controle da infecção cruzada. A proposta deste estudo foi avaliar os conhecimentos gerais e específicos dos alunos de graduação da FOAr-UNESP quanto à infecção HIV, antes e após assistirem a uma palestra informativa. Foram entregues na 1ª etapa 160 questionários e recolhidos posteriormente. Na 2ª etapa, três meses depois, foi ministrada a palestra sobre a infecção HIV com duração de 15 min e entregues 160 questionários para os mesmos alunos e recolhidos posteriormente. O índice total de acerto nos questionários preenchidos antes da palestra foi de 49% e de erro de 45,86%. Após a palestra o índice de acerto foi de 54,4% e de erro 40,76%. Concluímos que, mesmo após a palestra informativa, os estudantes apresentaram um índice de erro alto e pouca assimilação sobre o assunto, indicando que, apenas 15 minutos de palestra não foram suficientes para uma modificação significante no conhecimento dos estudantes. Assim, os alunos de graduação necessitam de um reforço nos conhecimentos sobre a infecção HIV, envolvendo atualização contínua dos aspectos informativos

3-D Evaluation of temporary skeletal anchorage sites in the maxilla

The selection of temporary anchorage device (TAD) site can be a challenging task since one should not only consider the 2-D distances between roots, but also the entire 3-D space. Thus, the aim of this study was to evaluate the posterior maxillary regio

Campanha de prevenção do câncer bucal em Araraquara: uma iniciativa de extensão consolidada em 11 anos de experiência

The authors present the Annual Oral Cancer Campaign of Araraquara promoted by the Oral Medicine Service of the Araraquara Dental School – UNESP. This campaign is an extension activity which, since its beginning, in 1993, has been expanding.The campaign provides background for teaching and research as well as benefits to the regional community. In 1999 this activity was conducted, for the first time, in a public fair visited daily for thousands people. This opportunity, which started in 1999, promoted the expansion of benefits and contributed to legitimate the campaign as an authentic extramural extension activity.Os autores apresentam a Campanha de Prevenção do Câncer Bucal de Araraquara, promovida anualmente pelos docentes do Serviço de Medicina Bucal da Faculdade de Odontologia de Araraquara. Trata-se de uma atividade de extensão universitária implantada em 1993 que vem se ampliando ao longo de 11 anos, proporcionando subsídios para o ensino e para a pesquisa, além de beneficiar a comunidade por meio de orientação e de atendimentos clínicos. Em 1999, essa campanha foi realizada pela primeira vez numa feira visitada diariamente por milhares de pessoas, o que possibilitou o aumento dos benefícios e a legitimou como autêntica atividade de extensão universitária extra-muros

Campanha de prevenção do câncer bucal em Araraquara: uma iniciativa de extensão consolidada em 11 anos de experiência

The authors present the Annual Oral Cancer Campaign of Araraquara promoted by the Oral Medicine Service of the Araraquara Dental School – UNESP. This campaign is an extension activity which, since its beginning, in 1993, has been expanding.The campaign provides background for teaching and research as well as benefits to the regional community. In 1999 this activity was conducted, for the first time, in a public fair visited daily for thousands people. This opportunity, which started in 1999, promoted the expansion of benefits and contributed to legitimate the campaign as an authentic extramural extension activity.Os autores apresentam a Campanha de Prevenção do Câncer Bucal de Araraquara, promovida anualmente pelos docentes do Serviço de Medicina Bucal da Faculdade de Odontologia de Araraquara. Trata-se de uma atividade de extensão universitária implantada em 1993 que vem se ampliando ao longo de 11 anos, proporcionando subsídios para o ensino e para a pesquisa, além de beneficiar a comunidade por meio de orientação e de atendimentos clínicos. Em 1999, essa campanha foi realizada pela primeira vez numa feira visitada diariamente por milhares de pessoas, o que possibilitou o aumento dos benefícios e a legitimou como autêntica atividade de extensão universitária extra-muros

Pervasive gaps in Amazonian ecological research

Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear un derstanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5–7 vast areas of the tropics remain understudied.8–11 In the American tropics, Amazonia stands out as the world’s most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepre sented in biodiversity databases.13–15 To worsen this situation, human-induced modifications16,17 may elim inate pieces of the Amazon’s biodiversity puzzle before we can use them to understand how ecological com munities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple or ganism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region’s vulnerability to environmental change. 15%–18% of the most ne glected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lostinfo:eu-repo/semantics/publishedVersio

Pervasive gaps in Amazonian ecological research

Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear understanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5,6,7 vast areas of the tropics remain understudied.8,9,10,11 In the American tropics, Amazonia stands out as the world's most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepresented in biodiversity databases.13,14,15 To worsen this situation, human-induced modifications16,17 may eliminate pieces of the Amazon's biodiversity puzzle before we can use them to understand how ecological communities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple organism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region's vulnerability to environmental change. 15%–18% of the most neglected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lost

Pervasive gaps in Amazonian ecological research

Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear understanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5,6,7 vast areas of the tropics remain understudied.8,9,10,11 In the American tropics, Amazonia stands out as the world's most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepresented in biodiversity databases.13,14,15 To worsen this situation, human-induced modifications16,17 may eliminate pieces of the Amazon's biodiversity puzzle before we can use them to understand how ecological communities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple organism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region's vulnerability to environmental change. 15%–18% of the most neglected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lost