4 documents found, page 1 of 1
Microleakage Evaluation of Temporary Restorations Used in Endodontic Treatment-...
Paulo, Siri; Abrantes, Ana M.; Xavier, Mariana; Brito, Ana Filipa; Teixo, Ricardo; Coelho, Ana; Paula, Anabela; Carrilho, Eunice(1) Background: Coronal microleakage can lead to endodontic treatment failure. This study aimed to compare the sealing ability of different temporary restorative materials used during endodontic treatment. (2) Methods: Eighty sheep incisors were collected, uniformized in length, and access cavities were performed, except for in the negative control group, where the teeth were left intact. The teeth were divided...
Regulamentos (UE) 2017/746 e (UE) 2022/112: a extensão da contagem decrescente ...
Oliveira, Celeste; Brito, Ana Filipa; Lescura, Natália; Gomes, Vivana; Peixoto, Eugénia; da Cunha, António Lindo; Caramujo-Balseiro, SandraA aplicação do Regulamento (UE) 2017/746 (IVDR) introduziu um acréscimo dos requisitos para controlo dos LDTs, e consequente aumento dos desafios para os laboratórios que os desenvolvem. De acordo com o Artigo 5º deste regulamento, os dispositivos fabricados e utilizados em instituições de saúde são considerados como tendo entrado em serviço, tendo a obrigatoriedade de cumprir com o disposto no IVDR. Entre outr...
Targeting Hepatocellular Carcinoma: What did we Discover so Far?
Brito, Ana Filipa; Abrantes, Ana Margarida; Tralhão, José Guilherme; Botelho, Maria FilomenaHepatocellular carcinoma (HCC) is increasingly considered an issue of global importance. Its rates of incidence and mortality have been markedly increasing over the last decades. Among risk factors, some should be highlighted, namely the infections by hepatitis B and C virus, as well as clinical cases of cirrhosis. HCC is characterized as asymptomatic disease in the initial stages which most often leads to a la...
Cytogenetic alterations induced by radiation in amniocytes
Pires, Ana Salomé; Pinto, Marta; Silveira, Paula; Brito, Ana Filipa; Fonseca, Sérgio; Castro, Ismael; Dias, Sílvia; Cunha, Ana Luísa; Ferreira, MarisaWhen cells are submitted to ionizing radiation, they respond with physico-chemical phenomena like ionization/excitation of atoms and energy distribution over the cells, chemical reactions with formation of free radicals and rupture of chemical bonds and biological alterations leading to specific changes of cellular functions with decrease of cellular activity. Therefore, both tissues and organs are affecte...