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991.
Paulo Melo Amrico Afonso Luis Monteiro Otilia Lopes Ricardo Castro Alves 《International dental journal》2021,71(3):263-270
Background: Facing the coronavirus disease 2019 (COVID-19) challenge on a global level, dental care professionals are encouraged to optimize universal precautions and adopt measures that ensure protection against infection by contaminated aerosols and droplets. Although aerosol transmission is possible, direct contact through large droplets is probably responsible for the vast majority of transmissions. Methods: This paper is the second of a series of 3 on the management of COVID-19 in clinical dental care settings and aims to describe the selection and use of personal protection equipment (PPE) by dental care professionals (DCP), with consideration of the level of risk associated with the planned procedures. PPE selection depends directly on the local epidemiological setting, the patient's characteristics, and the level of risk of the planned procedures. The procedures performed in the office environment are classified as low-, moderate-, or high-risk. Moderate risk includes 2 further sublevels associated with the cleaning, disinfection, and sterilization of materials for clinical procedures that do not generate aerosols. The training of DCP on how to properly don (put on) and doff (remove) PPE is as important as choosing the appropriate PPE because it can be associated with a risk of infection. Discussion: When there is limited availability of PPE, measures should be adjusted to the risk associated with the intervention. Assuming that an effective COVID-19 vaccine will be developed, once it becomes widely available for DCP, PPE requirements will likely be different. Conclusion: The proper use of PPE, together with the adoption of other operational procedures, can provide effective protection against microorganisms being transmitted via body fluids or in the air. 相似文献
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993.
von Stein Cubas Warnavin Stephanie Valenga Henrique Meister Costa Thainá Biudes Conforto Chaves Joao Daniel Paganella Spolidorio Luis Carlos Spolidorio Denise Madalena Palomari Feres Magda Soares Geisla Mary Silva Steffens Joao Paulo 《Clinical oral investigations》2021,25(6):3567-3575
Clinical Oral Investigations - Androgenic anabolic steroids (AAS) abuse is a serious health problem associated to several systemic complications. Here, we evaluated the periodontal clinical status,... 相似文献
994.
Luiza Lassi de Araújo Lopes Paulo Goberlânio de Barros Silva Juliana Ximenes Damasceno Joyce Ohana de Lima Martins Karla Rovaris da Silva Frederico Barbosa de Sousa Hugo Victor Dantas Thyciana Rodrigues Ribeiro Phillipe Nogueira Barbosa Alencar 《Orthodontics & craniofacial research》2021,24(1):96-101
995.
Leonardo Francisco Gonalves Dias Stephani Stamboroski Michael Noeske Dirk Salz Klaus Rischka Renata Pereira Maria do Carmo Mainardi Marina Honorato Cardoso Martin Wiesing Erika Soares Bronze-Uhle Rodrigo Barros Esteves Lins Paulo Noronha Lisboa-Filho 《RSC advances》2020,10(65):39854
Tailoring the surface properties of materials for biomedical applications is important to avoid clinical complications. Forming thin layers of amphiphilic molecules with apolar regions that facilitate attractive intermolecular interactions, can be a suitable and versatile approach to achieve hydrophobic surface modification and provide functional antibacterial properties. Aiming to correlate layer structure and properties starting from film formation, octadecylphosphonic acid (ODPA) and dimethyloctadecyl (3-trimethoxysilylpropyl) ammonium chloride (DMOAP) layers were adsorbed onto smooth titania surfaces. Then the films were studied by atomic force microscopy (AFM) and X-ray Photoelectron Spectroscopy (XPS), and their interactions with aqueous environments were characterized by contact angle and zeta potential measurements. In addition, antibacterial assays were performed using E. coli and S. mutants to reveal the antibacterial properties effected by the surface modification. Immediately after sputter deposition, titania was hydrophilic; however, after air storage and adsorption of DMOAP or ODPA, an increase in the water contact angle was observed. XPS investigations after layer formation and after antibacterial tests revealed that the attachment of layers assembled from ODPA on titania substrates is considerably stronger and more stable than that observed for DMOAP films. Heat treatment strongly affects DMOAP layers. Furthermore, DMOAP layers are not stable under biological conditions.Structure–property relationship of amphiphilic molecules on smooth substrates was explored through a multi-step approach and its influence on biological activity. 相似文献
996.
997.
998.
999.
Márcia Calheiros Chaves Silva Antonio Batista da Silva Fabiano Moura Teixeira Paulo Cesar Pereira de Sousa Regina Maria Macedo Rondon José Eduardo Ribeiro Honório Luiz Rafael Leite Sampaio Samanda Lima Oliveira Angela Nadyla Martins Holonda Silvânia Maria Mendes de Vasconcelos 《Asian Pacific journal of tropical medicine》2010,3(4):332-336