tooth decay
Tooth decay is among the most common infectious diseases in the Western world. Tooth decay is caused by the presence of bacteria and sugars near the teeth over time. The presence of bacteria near the surfaces of the teeth creates a sticky layer known as 'plaque' or dental plaque. Food and drink contain sugars that accumulate near the teeth. These bacteria break down the sugars and as a result an acid is formed that dissolves the hard tooth tissue [...]