Daily Mail - Aspirin could REVERSE the effects of tooth decay by helping teeth to 'self-repair', scientists discover

The cheap drug helps form new dentine, found Queen's University Belfast study
This is the hard tooth structure that is usually damaged by decay
Aspirin 'significantly increased' rebuilding of minerals which restores strength
It also stimulated stem cells in the tooth to regenerate damaged structure
Researchers hope the findings will result in a reduction in the need for fillings.

Aspirin could reverse the effects of tooth decay – resulting in a reduction in the need for fillings, scientists have found.
The common pain relief medication can do this by triggering teeth to self-repair, they say.
The cheap drug is able to help form new dentine, the hard tooth structure that is usually damaged by decay, according to researchers at Queen's University Belfast.
Tooth decay is the most common dental disease worldwide – affecting a third of adults, figures suggest.
Around seven million fillings are provided in the NHS each year in England alone and the experts say the findings could reduce the crippling £3.4 billion a year cost of dental care.....

It didn't improve my teeth when I had to take  6 aspirins every four hours for Rheumatic Fever when I was a teenager. Didn't do any harm though I'm still here after over 60 years.