How does cinnamon benefit your oral health?

Doubtful: I personally don't think it benefits your oral health. I did find one study: " In the test tube study, cinnamon proved nearly twice as effective against Streptococcus mutans, a bacterium that leads to dental plaque formation, as clove oil, which has been used widely as an oral antiseptic and pain reliever." However, many people may develop aphthous ulcers or other irritations from using it.

Not recommended: Heavy use of cinnamon may irritate the mouth and lips, causing sores.