The COVID-19 pandemic pushed dental health officials around the world to reassess and adjust their existing healthcare practices. As studies on controlled COVID-19 transmission remain challenging, this review focuses on particles that can carry the virus and relevant approaches to mitigate the risk of pathogen transmission in dental offices. This review gives an overview of particles generated in clinical settings and how size influences their distribution, concentration, and generation route. A wide array of pertinent particle characterization and counting methods are reviewed, along with their working range, reliability, and limitations. This is followed by a focus on the effectiveness of personal protective equipment (PPE) and face shields in protecting patients and dentists from aerosols. Direct studies on severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are still limited, but the literature supports the use of masks as an important and effective non-pharmaceutical preventive measure that could reduce the risk of contracting a respiratory infection by up to 20%. In addition to discussing about PPE used by most dental care professionals, this review describes other ways by which dental offices can protect patients and dental office personnel, which includes modification of the existing room design, dental equipment, and heating, ventilation, and air conditioning (HVAC) system. More affordable modifications include positioning a high-efficiency particulate air (HEPA) unit within proximity of the patient's chair or using ultraviolet germicidal irradiation in conjunction with ventilation. Additionally, portable fans could be used to direct airflow in one direction, first through the staff working areas and then through the patient treatment areas, which could decrease the number of airborne particles in dental offices. This review concludes that there is a need for greater awareness amongst dental practitioners about the relationship between particle dynamics and clinical dentistry, and additional research is needed to fill the broad gaps of knowledge in this field.
The Association of American Medical Colleges recognizes that empathy is an important part of providing excellent patient care and lists empathy as a Core Entrustable Professional Attribute for physicians. This study is a review of the literature focusing on studies with an educational intervention to promote empathy and at least one year follow-up data. After reviewing the 4910 abstracts retrieved from PubMed, PsycInfo, Cochrane, Web of Science, CINAHL, and Embase; the coauthors selected 61 articles for full-text review and completed a medical education research study quality instrument (MERSQI) to ensure all selected studies scored at least 7 or above. Five studies from the US and seven international studies met our inclusion criteria and formed the basis for the study. Few longitudinal studies with a post-intervention follow-up exist to confirm or disprove the effectiveness and durability of empathy training. Of the published studies that do conduct long-term follow-up, study design and measures used to test empathy are inconsistent. Despite the high degree of heterogeneity, the overwhelming majority demonstrated declining empathy over time. Little evidence was identified to support the ability to augment the empathy of physician trainees in sustained fashion. A model is presented which explains the observed changes. Alternative solutions are proposed, including the selection of more prosocial candidates.
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