In arteries, it can cause arteriosclerosis; on the teeth, in can cause decay
[DOC] [TLE] Tooth Cavities and Periodontal Disease Linked to Cardiovascular ... [PAR] The researchers counted the number of cavities and decaying teeth surfaces ... 
incidence of atherosclerosis  the hardening of the arteries  compared to those 
... off and clog the blood vessels in or leading to the brain this can cause a stroke.