The present study records Halophila baillonis and describes the specimens of the Environmental Protection Area of the Parnaíba River Delta, Piauí, semiarid coast of Brazil. In August 2014, we mapped and characterized the seagrass meadow, and georeferenced the extent of H. baillonis patches within the area. Ten ramets were collected manually for biometric measurements, and five samples were collected using a PVC corer of 10 cm in diameter, inserted at 15 cm depth, to obtain averages of shoot density and belowground/aboveground biomass ratios. Apart from H. baillonis, we recorded Halodule wrightii, Halodule sp. and Halophila decipiens, characterizing the seagrass meadow of Cajueiro da Praia as the most diverse on the Brazilian coast. Average density was between 96 and 1401 shoots m–2; total biomass ranged from 14.3 g dw m–2 to 27.1 g dw m–2; and leaf size 7.8 to 23.8 mm. In general, density, biometric and biomass values of the plants were greater than or at the upper range described in other areas, co‐occurring with other seagrass species and on a variety of sediments, indicating a well‐established bed. (© 2014 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

Marine angiosperms are submerged marine plants with a wide global distribution, occurring in temperate and tropical areas where they form meadows that harbour algae and marine fauna that are important for the functioning of the coastal ecosystem. This study is a floristic survey of the seagrasses occurring in the coastal region of the State of Piauí, Brazil. Five species were recorded for two genera in two families; for the Cymodoceaceae: Halodule wrightii Asch., Halodule beaudettei (Hartog) Hartog and Halodule emarginata Hartog; and for the Hydrocharitaceae: Halophila decipiens Ostenf. and Halophila baillonis Asch. ex Dickie. Species descriptions, an identification key, and information on geographic distributions and habitats of the five taxa are presented. All species are native but only Halodule emarginata is endemic to Brazil, and is reported here as a new record for Piauí, extending its range northwest from the coast of the neighbouring state of Ceará.

The seagrass Halodule emarginata is an endemic tropical species of Brazil, previously found from São Paulo to Bahia. The present study gives more ecological information of this species and report the extension of its northern range where it occurs in an estuarine area of Aquiraz‐Ceará, semiarid coast of Brazil. In November 2014, the meadow was discovered, georeferenced and mapped. Five cores were collected for morphometrical analyses of H. emarginata and associated florofaunistic species. Two beds of H. emarginata with areas of 177.8 m2 and 5012.3 m2 were identified in the estuary of the Pacoti River, indicating an extension of its known range by 1500 km to the north. Despite the emarginate apex, morphological patterns revealed that specimens were slightly less developed than previously described in the literature, probably due to estuarine stress. However, algal biodiversity (seven species) in the studied meadows was within the range observed for other estuarine meadows in Brazil, with presence of Rhodophyta and Chlorophyta. The main groups of invertebrate megafauna were present, including 13 taxa mainly of Mollusca, Crustacea and Polychaeta. This meadow will be monitored in order to understand its dynamics and relationships with other florofaunistic species and its responses to environmental variations.

Objective: To report a clinical case of the use of fiberglass pin and composite resins for oral rehabilitation of tooth 14 (upper right premolar). Case Report: A patient sought care at a private dental office complaining about a tooth with aesthetic impairment. Exposing the forms of treatment, the patient agreed to rehabilitate tooth 14 with a fiberglass pin and composite resin. It started by dismantling 2/3 of the vestibular canal to install the pin, then after its preparation, it was cemented with dual resin cement in A3 color and adapted to the root canal. Thereafter, a 37% phosphoric acid for 40 seconds was used, then the adhesive and light cured for 40 seconds. Then the crown was reconstructed with small increments photoactivated with composite resins for dentin in color A3 and enamel in color A3. A pre-finishing was done with a diamond tip and the final polishing was done after 48 hours. Conclusion: Composite resins associated with prefabricated fiberglass pins are a satisfactory alternative for the rehabilitation of endodontically treated teeth that have little remaining dental structure.