OBJECTIVES: The aim of this study was to investigate the internal fit (IF) of glass-infiltrated alumina (ICA - In-Ceram Alumina), yttria-stabilized tetragonal zirconia polycrystals (Y-TZP - IPS e.max ZirCAD), and metal-ceramic (MC - Ni-Cr alloy) crowns. MATERIAL AND METHODS: Sixty standardized resin-tooth replicas of a maxillary first molar were produced for crown placement and divided into 3 groups (n=20 each) according to the core material used (metal, ICA or Y-TZP). The IF of the crowns was measured using the replica technique, which employs a light body polyvinyl siloxane impression material to simulate the cement layer thickness. The data were analyzed according to the surfaces obtained for the occlusal space (OS), axial space (AS) and total mean (TM) using two-way ANOVA with Tukey ’s multiple comparison test (p<0.05). RESULTS: No differences among the different areas were detected in the MC group. For the Y-TZP and ICA groups, AS was statistically lower than both OS and TM. No differences in AS were observed among the groups. However, OS and TM showed significantly higher values for ICA and Y-TZP groups than MC group. Comparisons of ICA and Y-TZP revealed that OS was significantly lower for Y-TZP group, whereas no differences were observed for TM. CONCLUSIONS: The total mean achieved by all groups was within the range of clinical acceptability. However, the metal-ceramic group demonstrated significantly lower values than the all-ceramic groups, especially in OS.

No Complexo Estuarino Lagunar de Cananeia-Iguape-Paranaguá ocorre uma intensa atividade pesqueira, principalmente artesanal, tendo o parati (Mugil curema) um dos recursos pesqueiros, sendo capturado geralmente com redes de emalhe e cercos-fixos. O presente trabalho visa caracterizar a pesca do Mugil curema, trazendo subsídios para o ordenamento de sua exploração. O trabalho foi desenvolvido com os dados de desembarque no município de Cananeia, no período de 1995 a 2009. Utilizaram-se dados de produção, esforço pesqueiro e CPUE para avaliar a evolução das capturas, e a rede de emalhe foi descrita através de entrevistas com os pescadores de 16 comunidades de Cananeia. A pesca de parati despertou interesse dos pescadores da região a partir da década de 1980, sendo atualmente um dos principais produtos pesqueiros da pesca artesanal estuarina no litoral sul de São Paulo. Seus maiores desembarques ocorrem nos meses quentes, tanto com redes de emalhe, como outro aparelho de pesca denominado de "cerco-fixo". As maiores capturas ocorrem no período de desova da espécie entre os meses de outubro a abril. A diferença no período de maiores desembarques entre os aparelhos de pesca ocorreu principalmente devido a preferências comerciais e por causa da estrutura do aparelho. De acordo com os índices de abundância utilizados o recurso está em sobre-pesca, devido ao progressivo aumento do esforço pesqueiro, assim sugere-se que sejam tomadas medidas para controle do esforço pesqueiro, como permissões especiais para pescadores trabalharem na pesca do parati, principalmente com redes de emalhe. As atuais medidas de ordenamento não atendem os pescadores, nem a preservação do recurso, tendo de ser revistas de maneira participativa entre os órgãos gestores e o setor pesqueiro, garantindo maior legitimidade e sucesso na sustentabilidade da atividade.

There is intense fishing activity, mainly artisanal, in the Cananéia, Iguape and Ilha Comprida Estuarine System. White mullet (Mugil curema) is one of the local fishery resources and is usually caught with gillnets and fish traps. This study aimed to characterise the Mugil curema fisheries thereby underpinning the management of the species in the region. The study was developed with data collected from landings in the town of Cananéia, São Paulo state, Brazil, from 1995 to 2009. Production data, fishing effort and CPUE were used to assess the evolution of captures. The gillnets were characterised by interviewing fishermen from 16 communities in Cananéia. White mullet fishery has aroused the interest of fishermen in the region since the 80s and today it is one of the main products of artisanal estuarine fishery off the south coast of São Paulo. The major landings occur in the warmer months with fish traps and gillnets being the main fishing gear used. The largest catches occur in the spawning months of the species from October to April. The highest landings varied according to different fishing gear, showing differences primarily due to trade preferences and to the structure of the fishing gear. According to the index of abundance used in this study, the resource is overfished due to the progressive increase in fishing effort, so it is suggested that measures should be taken to control fishing effort, such as special fishing permits to catch white mullet, especially with gillnets. The current management measures neither meet the needs of fishermen nor the preservation of the resource, and must be reviewed in a participatory way with management agencies and the fishery sector, ensuring greater legitimacy and success in the sustainability of the activity.