Dietary habits, including coffee consumption, are a variable commonly used in health behavioral and lifestyle surveys.1. and 2. Coffee is the most widely consumed beverage in the world after mineral water. Because of its wide consumption at different levels by most segments of the population,3. and 4. the public and the scientific community have expressed interest in the potential for coffee to be considered a functional food for its biopharmacological properties, which have been demonstrated in clinical and epidemiological research.3. and 5. Because the oral cavity and teeth are where the drink has its first contact, it is important to know the effects of coffee in relation to oral health, as proposed in this chapter. Besides, coffee is frequently consumed with additions like sugar, which may have a strong impact on quality of life and health of the people.