Many of them are being made of a double layer of regular fabric, generally cotton.
We have noticed that, in many countries, due to the costs of the triple layer masks - which have risen due to the pandemic - most health centers have approved, for the non-health staff, the use of cloth masks. Dentists have been using this same type of masks on a daily basis, 8-10 hours/day, 5 days/week for decades, and it is, indeed, expected not to affect oxygen saturation. The three-layer DY95 masks used in this research are the very same used by most medical professionals regularly, including dentists and dental personnel. This article raises important considerations about 'non-medical' face masks used during the pandemic - assuming that non-medical is referring to non-N95 masks. Shared Decision Making and Communication.Scientific Discovery and the Future of Medicine.Health Care Economics, Insurance, Payment.Clinical Implications of Basic Neuroscience.Challenges in Clinical Electrocardiography.
