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André , Gustavo Fernandes de Oliveira,Augusto Ferreira Gonç , alves , Jú , lia Nunes Soares,Letí , cia Henriques Neto Salgado,Bruno Silveira Santana,Matheus Venâ,ncio Passos,Juliana Lopes de Oliveira 대한해부학회 2021 Anatomy & Cell Biology Vol.54 No.4
Dissection and human specimens study remain the gold standard method for teaching anatomy. Due to the increasing health science courses in Brazil, the traditional way of obtaining bodies for scientific purposes, the unclaimed ones, became insufficient. In addition, this source is no longer ethically appropriate according to anatomists. In order to maintain the teaching quality, the Federal University of Juiz de Fora (UFJF) in Brazil, inspired by successful initiatives around the world, created a body donation program; Sempre Vivo. Besides the bureaucratic difficulty faced during its regulation, the implementation of a body donation program requires special attention regarding the religiosity, culture and uniqueness of the city s inhabitants. Informing people can demystify the process, avoid prejudice and increase the number of donors. In this way, an outreach project was designed to publicize Sempre Vivo and raise public awareness. In the first six years, Sempre Vivo reached the mark of 64 registered donors and seven bodies received. The donor’s profile corresponds to female (70.3%), 57 years of age, retired (50.8%), spiritist (53.1%) and with 12 years or more of formal education (90.6%). Considering that the UFJF has not received unclaimed bodies for ten years, the program was considered satisfactory up to this level and, in the future, it may be the exclusive source of anatomical specimens. The description of the creation and the publicizing of Sempre Vivo, the overcome challenges, as well as the donors’ profile, may encourage and facilitate the foundation of similar programs in Brazil and abroad.
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Resin infiltrant protects deproteinized dentin against erosive and abrasive wear
de Albuquerque Ana Theresa Queiroz,Bezerra Bruna Oliveira,Leal Isabelly de Carvalho,de Moraes Maria Denise Rodrigues,Melo Mary Anne S.,Passos Vanara Florêncio 대한치과보존학회 2022 Restorative Dentistry & Endodontics Vol.47 No.3
Objectives This study aimed to investigate the anti-erosive/abrasive effect of resin infiltration of previous deproteinized dentin. Materials and Methods Dentin slabs were randomly assigned to 3 groups (n = 15): Control (no deproteinization; no resin infiltrant applied), RI (no deproteinization; resin infiltrant applied), and DRI (deproteinization; resin infiltrant applied). After undergoing the assigned treatment, all slabs were subjected to an in vitro cycling model for 5 days. The specimens were immersed in citric acid (0.05 M, pH = 3.75; 60 seconds; 3 times/day) and brushed (150 strokes). Between the challenges, the specimens were exposed to a remineralizing solution (60 minutes). The morphological alterations were analyzed by mechanical profilometry (µm) and scanning electron microscopy (SEM). Data were submitted to one-way analysis of variance (ANOVA) and Tukey tests (p < 0.05). Results Control and RI groups presented mineral wear and did not significantly differ from each other (p = 0.063). DRI maintained a protective layer preserving the dentin (p < 0.001). After erosive/abrasive cycles, it was observed that in group RI, only 25% of the slabs partially evidenced the presence of the infiltrating, while, in the DRI group, 80% of the slabs presented the treated surface entirely covered by a resin-component layer protecting the dentin surface as observed in SEM images. Conclusions The removal of the organic content allows the resin infiltrant to efficiently protect the dentin surface against erosive/abrasive lesions.
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