https://californiaglobe.com/section-2/mask-mouth-is-smelly-side-effect-of-mask-wearing/
Constant mask-wearing “is leading to all kinds of dental disasters like decaying teeth, receding gum lines and seriously sour breath.
“We’re seeing inflammation in people’s gums that have been healthy forever, and cavities in people who have never had them before,” says Dr. Rob Ramondi, a dentist and co-founder of One Manhattan Dental. “About 50% of our patients are being impacted by this, [so] we decided to name it ‘mask mouth’ — after ‘meth mouth.’ ”