About the Study
This Boston University study, published in the Journal of Periodontology, involved 1,152 white males, ranging from 26 to 84 years of age. Data were collected over a period of 30 years in order to determine what effects coffee can have on tooth loss. This study on the relationship of coffee and tooth decay is of great significance. This is mainly because it is the first long-term study to examine the relationship between coffee consumption and dental health. Drinking lots of coffee isn't likely to give you a sparkling white smile, but it appears that it doesn't affect whether you will need dentures down the road or not.
Antioxidants in Coffee
Medical Daily reports that coffee may even prevent tooth decay. DMD graduate Nathan Ng states, "We found that coffee consumption did not have an adverse effect on periodontal health and instead may have protective effects against periodontal disease."
Nearly two-thirds of Americans are habitual coffee drinkers. Medical Daily says that coffee is the source of most of America's daily antioxidant consumption. It reports that both regular and decaf coffee contain various antioxidants and anti-inflammatory ingredients.
According to WebMD, coffee contains special antioxidants called quinines. These antioxidants become even more potent during the roasting process. WebMD indicates that the ingredient that may be of particular benefit to dental health is known as trigonelline. This compound is what prevents dental caries and is the same thing that gives coffee its distinctive aroma.
Beware of Add-ins!
Source
http://dentistrytoday.com/todays-dental-news/10680-coffee-may-fight-gum-disease
http://www.medicaldaily.com/drinking-coffee-may-curb-gum-disease-new-periodontal-disease-treatment-299610
http://www.webmd.com/diet/features/the-buzz-on-coffee