How will actual wearing time influence the protective effect of surgical masks?

Shi, Yihan; Zhang, Xing; Xu, Kangli; Jin, Xiangyu; Zhao, Yi; Huang, Chen

doi:10.1177/00405175221131065

Cited by 3 publications

(1 citation statement)

References 38 publications

(54 reference statements)

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“…Surgical masks have been proven to prevent the transmission of human coronaviruses from symptomatic individuals and reduce the risk of COVID-19 infection ( 24 , 25 ). Both particulate and bacterial filtration efficiency decline obviously with the increase of mask use time ( 26 ). According to protection standards for stomatological hospitals of China, dental professionals must keep wearing surgical masks during nursing, diagnosis, and treatment, and surgical masks are disposable and should be changed after 4 h of use, or immediately if the masks become moist or splattered ( 21 ).…”

Section: Discussionmentioning

confidence: 99%

Dental professionals' use of personal protective equipment during COVID-19: a cross-sectional study in China

Wan

Liu

Yang

et al. 2023

Front. Public Health

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BackgroundAppropriate use of personal protective equipment (PPE) could significantly reduce the risk of viral transmission and infection. This study aimed to assess the use of PPE among dentists during the COVID-19 pandemic in China, explore its influencing factors, and provide some practical recommendations.MethodsAn online cross-sectional survey was conducted among 384 Chinese dentists in September 2022. The questionnaire comprised a series of questions about demographic characteristics, compliance with proper PPE use, personal barriers to use, and exposure risk estimation.ResultsOf the 384 respondents, 57.3% had unacceptable compliance with the proper use of PPE during COVID-19. Medical surgical mask is the most common for dental professionals to wear (93.8%), followed by goggles or face shield (63.8%), and isolation gown (53.1%). Unexpectedly, only 63.3% of respondents always change masks with guidelines. The condition for changing goggles/face shields and isolation gowns is even worse (45.6 and 37.0%, respectively). Visual barriers, physical discomfort, complex procedures, and heavy workload were the most common personal barriers to use. According to the results of Chi-square test and correlation analysis, PPE use compliance was associated with age, years of practice, medical institution type, and exposure risk estimation.ConclusionChinese dental professionals need to improve their compliance with the proper use of PPE, especially those in the 31–40 age group, with 11–15 experience years and working in private dental clinics. Increasing compliance with PPE may be achieved by addressing personal barriers to use, human resource shortages, and perceptions of exposure risk.

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Section: Discussionmentioning

confidence: 99%

Dental professionals' use of personal protective equipment during COVID-19: a cross-sectional study in China

Wan

Liu

Yang

et al. 2023

Front. Public Health

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Is double masking even worthwhile?

Chea,

Pushpawela,

Ward

et al. 2024

Aerosol Science and Technology

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Investigation of the Relationship Between the Structural Properties and Air, Water Drop and Particle Permeability of Different Masks Available in the Market

AKCA,

KATI

2023

Celal Bayar Üniversitesi Fen Bilimleri Dergisi

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This study was performed on the masks which started to have vital importance after the Covid-19 which were first seen in China at the end of 2019 and spread all over the world in a short time and became a global epidemic. By examining the structural and morphological properties (number of layers, fabric properties used in different layers, average fiber diameter, fiber distribution, average porosity diameter, etc.) of different masks procured from local producers, air permeability, water drop and particle permeability were investigated. Structural and morphological properties of different layers of masks were observed through SEM analysis. The air permeability analysis of the masks was performed at 100 pascals pressure, in an area of 5 cm2 in 4 repetitions using Textest-Fx 3300 Air Permeability Device. The water drop permeability analysis was carried out with 0.3 µM NaCl solution under standard atmospheric conditions in a non-pressurized environment. A crocmeter was used for particle permeability analysis. And it was tested whether the fine particulate dust passed to the back of the mask. It has been determined that the air permeability, water drop and particle permeability behavior of the masks with different structural and morphological properties are very different.

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How will actual wearing time influence the protective effect of surgical masks?

Cited by 3 publications

References 38 publications

Dental professionals' use of personal protective equipment during COVID-19: a cross-sectional study in China

Dental professionals' use of personal protective equipment during COVID-19: a cross-sectional study in China

Is double masking even worthwhile?

Investigation of the Relationship Between the Structural Properties and Air, Water Drop and Particle Permeability of Different Masks Available in the Market

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