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2. Facemask (orthodontics) - Wikipedia

   en.wikipedia.org/wiki/Facemask_(orthodontics)

   Teenage patient been fitted with her orthopedic / orthodontic facemask - required wear-time 16 hours daily. A facemask (also referred to as a protraction facemask, orthopedic facemask, or reverse-pull headgear) is a type of an orthodontic headgear used to treat underbite and other malocclusions where the upper jaw is too far backwards. [1]

3. Disposable masks can take up to 450 years to decompose ... - AOL

   www.aol.com/lifestyle/disposable-masks-450-years...

   According to recent independent lab tests commissioned by TheNew York Times, two masks in particular — Enro ($16.50 each) and Happy Masks Pro ($24 a pop) blocked “94 percent to 99 percent of ...

4. Respiratory protective equipment - Wikipedia

   en.wikipedia.org/wiki/Respiratory_protective...

   Respiratory protective equipment (RPE), also called protective breathing equipment (PBE) in the US, [1] is a form of personal protective equipment designed to protect the wearer from a variety of airborne hazards in the form of a gas, fume, mist, dust or vapour. Respirators filter the air to remove harmful particles and alongside the breathing ...

5. The dangers of LED face masks you should know about - AOL

   www.aol.com/lifestyle/dangers-led-face-masks...

   "The potential dangers of using at-home LED masks include headaches, eye strain, sleep disturbances, insomnia and mild visual side effects," she explained. "It’s essential to go to a board ...

6. Elastomeric respirator - Wikipedia

   en.wikipedia.org/wiki/Elastomeric_respirator

   Well-maintained elastomeric masks can last for years in industrial use. [5] Users may carry their respirator in a shoulderbag for accessibility. [5] [54] In construction, elastomeric masks are rarer than disposable mechanical filters; the disposable masks are preferentially issued because supervisors prefer to avoid cleaning and storage. [5]:

7. Oxygen mask - Wikipedia

   en.wikipedia.org/wiki/Oxygen_mask

   A woman wearing an oxygen mask. An oxygen mask is a mask that provides a method to transfer breathing oxygen gas from a storage tank to the lungs.Oxygen masks may cover only the nose and mouth (oral nasal mask) or the entire face (full-face mask).