https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3909922/
https://pubmed.ncbi.nlm.nih.gov/15956816/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5852831/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3909922/
https://www.nhs.uk/news/neurology/tooth-loss-link-to-increased-risk-of-dementia/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5147497/