Scope of Preparation of Oval and Long-Oval Root Canals: A Review of the Literature.

Successful endodontic treatment depends on cleaning and disinfecting the root canals, in order to provide conditions for three-dimensional filling, which should prevent root canal reinfection. However, anatomical complexities pose a challenge during endodontic treatment. The present study was a literature review carried out in the following databases: PubMed, SciELO, and MEDLINE, which were searched for articles published from 2017 to 2021. Micro-CT studies published in English, which analysed the capacity for preparation of oval and long-oval root canals, were included. The following keywords were used: "oval-shaped canals," "long-oval-shaped canals," "endodontics," and "micro-CT." The aim of this study was to carry out a literature review of micro-CT studies on the scope of the capacity for preparation performed in oval and long-oval root canals with rotary and reciprocating instruments.

Escudo facial (Face Shield) em tempos de covid-19: uma revisão de literatura / Facial shield use during COVID-19: a literature review

Objetivo: A proposta deste estudo foi analisar a efetividade do escudo facial (face shield) como equipamento de proteção da face, fornecendo subsídios para a adoção dele na realização de procedimentos odontológicos durante a pandemia de COVID-19. Materiais e métodos: Trata-se de um estudo bibliográfico, do tipo revisão integrativa da literatura, que consiste em sintetizar o desfecho da pesquisa em questão de maneira ordenada e eficiente, fornecendo uma maior amplitude de informações sobre o assunto, constituindo um corpo de conhecimento. Para tal, a pesquisa bibliográfica foi realizada nas plataformas EBS-COHost e PubMed, utilizando os descritores "face shield", "faceshield" e "COVID-19", foram preconizados os artigos publicados em 2020 e 2021 em língua portuguesa do Brasil, língua inglesa e língua espanhola. Resultados: Foram selecionados 9 artigos para ilustrar as evidências acerca da efetividade do escudo facial (face shield) como barreira de proteção a ser adotada durante a pandemia de COVID-19. Conclusão: Entende-se, portanto, que a adoção do escudo facial (face shield) para reduzir os efeitos contaminantes dos aerossóis durante a pandemia de COVID-19 é fundamental, uma vez que os estudos recentes atestam a possibilidade de redução dos níveis de contaminação.

Objective: This study aimed to analyze the effectiveness of the face shield as a face protection equipment, providing subsidies for its adoption in performing dental procedures during the COVID-19 pandemic. Materials and methods: This is a bibliographic study, an integrative literature review, which consists of synthesizing the outcome of the research in an orderly and efficient way, providing a greater range of information on the subject, constituting a body of knowledge. Therefore, the bibliographic research was carried out on the EBSCOHost and PubMed platforms, using the descriptors "face shield" or "faceshield" and "COVID-19". The Search includes articles published in 2020 and 2021, in Brazilian Portuguese, English, and Spanish. Results: Nine articles were selected to illustrate the evi-dence about the effectiveness of the face shield as a protection barrier to be adopted during the COVID-19 pandemic. Conclusion: It is understood, therefore, that the adoption of the face shield to reduce the contaminating effects of aerosols during the COVID-19 pandemic is fundamental, since recent studies attest to the possibility of reducing such levels of contamination.