64 documents found, page 1 of 7
Laser-texturing and traditional surface modification to improve the adhesion of...
Fernandes, Valter; Carvalho, Oscar; Silva, Filipe; Henriques, Bruno; Özcan, Mutlu; Souza, Júlio C. M.Objectives The aim of this study was to perform experimental evaluation of the synergistic effects of laser-texturing and different traditional surface modification approaches to improve the push-out bond strength of glass fiber-reinforced composite (GFRC) posts to resin-matrix cements used in endodontically treated teeth rehabilitation. Methods One hundred and ten freshly extracted mandibular single-rooted pre...
The Brightness of Multidisciplinary Approaches in Health Sciences Research
Cortes, Arthur R. G.; Henriques, Bruno; Sarmento, Bruno; Rodrigues, Célia Fortuna; Souza, Júlio C. M.; Tiritan, Maria Elizabeth; Brito, Nuno VieiraOn behalf of the Editorial Team of Scientific Letters journal, we are pleased to announce the publication of the second issue. The second issue comprises four scientific papers, encompassing two reviews and two research articles. In 2023, Scientific Letters also published two special issues in the form of Books of Abstracts. These publications compile all abstracts that were accepted for presentation at the II ...
Away from Achilles’s footsteps
Henriques, BrunoIn the Iliad, Achilles refuses to take part in the battle, because Agamemnon takes Briseis, as spoils of war from the king of the Myrmidons, for himself. Is this well-known fact the literary precedent that Ben, the protagonist of The Mercy Seat, updates? Written by Neil LaBute in the aftermath of the attack on the Twin Towers, this 2002 play explores the limits of human selfishness: Ben and Abby take advantage ...
Microscopic inspection of the adhesive interface of composite onlays after ceme...
Magalhães, Tiago; Fidalgo-Pereira, Rita; Torres, Orlanda; Carvalho, Óscar; Silva, Filipe S.; Henriques, Bruno; Özcan, Mutlu; Souza, Júlio C. M.Purpose: This study aimed to assess the layer thickness and microstructure of traditional resin-matrix cements and flowable resin-matrix composites at dentin and enamel to composite onlay interfaces after cementation on low loading magnitude. Materials and Methods: Twenty teeth were prepared and conditioned with an adhesive system for restoration with resin-matrix composite onlays manufactured by CAD-CAM. On ce...
Insight into the mechanisms involved in the removal of toxic, rare earth, and p...
Viana, Thainara; Henriques, Bruno; Ferreira, Nicole; Pinto, Ricardo J.B.; Monteiro, Filipe L.S.; Pereira, EduardaHazardous leachate/effluent from fluorescent lamps contains potentially toxic elements such as Hg and Pb, and critical raw materials such as rare earth elements (REEs). This work evaluated the ability of the live macroalgae Ulva sp. to remediate a simulated lamp industry wastewater consisting of a complex mixture of elements (Y, Eu, La, Ce, Tb, Gd, Hg, Pb, Zn, Cu, Co, Cd, and Pt), with particular emphasis on th...
Removal of mercury by silica-supported ionic liquids: efficiency and ecotoxicol...
Viana, Thainara; Almeida, Raquel; Figueira, Paula; Rocha, Luciana; Neves, Márcia; Freitas, Rosa; Freire, Mara; Henriques, Bruno; Pereira, EduardaAnthropogenic impacts have affected the coastal environment and contributed to its contamination. Mercury (Hg) is widespread in nature and has been shown to be toxic in even the smallest amounts, negatively affecting not only the marine ecosystem but also the entire trophic chain due to its biomagnification. Mercury ranks third on the Agency for Toxic Substances and Diseases Registry (ATSDR) priority list and i...
Effect of inorganic fillers on the light transmission through traditional or fl...
Fidalgo-Pereira, Rita; Carvalho, Óscar; Catarino, Susana O.; Henriques, Bruno; Torres, Orlanda; Braem, Annabel; Souza, Júlio C. M.Objectives: The aim of this in vitro study was to evaluate the light transmission through five different resin-matrix composites regarding the inorganic filler content. Methods: Resin-matrix composite disc-shaped specimens were prepared on glass molds. Three traditional resin-matrix composites contained inorganic fillers at 74, 80, and 89 wt. % while two flowable composites revealed 60 and 62.5 wt. % inorganic ...
Morphological aspects and distribution of granules composed of deproteinized bo...
Pimentel, Inês; Henriques, Bruno; Silva, Filipe; Carvalho, Oscar; Teughels, Wim; Özcan, Mutlu; Souza, Júlio C. M.Objective: The main aim of this study was to evaluate the morphological aspects and distribution of granules composed of deproteinized bovine bone mineral (DBBM) and human dentin-derived bone graft (HDBG) into a putty consistency mixture. Materials and methods: DBBM or HDBG were mixed with an alginate-based hydrogel at two different granule/hydrogel ratio (1:1 and 1:3) and divided into four test groups while tw...
Contamination of resin-matrix composites on chairside handling using latex or n...
Cunha, Ivana; Torres, Orlanda; Fidalgo-Pereira, Rita; Henriques, Bruno; Özcan, Mutlu; Souza, Júlio C. M.The aim of this study was to evaluate the efect of diferent gloves and clinical environment on the contamination of resinmatrix composites for restorative dentistry. Specimens of nano-hybrid resin-matrix composite (n=6) were divided in groups regarding the handling with (A) clinical spatula; (B) latex gloves; (C) latex or (D) nitrile gloves with human saliva; (E) latex or (F) nitrile gloves with human blood. Af...
Stresses, friction, and wear on different materials and design for temporomandi...
Pinto-Borges, Henrique; Pinto, João; Carvalho, Óscar Samuel Novais; Henriques, Bruno; Silva, Filipe Samuel; Gomes, José; Ramos, AntonioAvailable online 10 November 2022; The purpose of the present study was to evaluate the coefficient of friction, wear volume, surface damage, and contacting stresses regarding different materials and condyle design for alloplastic temporomandibular joint total joint replacement (TMJ TJR). Spherical-and anatomical-shape condyle specimens were prepared from CoCrMo or Ti6Al4V alloys which were assessed against ult...