https://medicalxpress.com/news/2021-04-good-dental-health-heart-infection.html
https://www.washingtonpost.com/lifestyle/wellness/dental-care-pandemic-stress-teeth/2021/06/16/348d3576-cd5a-11eb-8cd2-4e95230cfac2_story.html?fbclid=IwAR1g9fFHP_Oqy0F6zbn5VscGeo9z2608FUycPpQtjGRZOXe2Ldzvw3hB-98
https://youtu.be/_BGbzO9DWDM