Oral health problems — ranging from cavities to cancer — are painful and costly, affecting millions of people each year. This is alarming because almost all oral diseases can be avoided with proper oral hygiene. Tooth decay Cavities are a common problem for children. Untreated cavities can cause pain and infection, which can lead to difficulty eating, speaking, playing and learning. Tooth decay is also a problem for adults, especially for the increasing number who retain most of their teeth throughout their lives. Tooth loss can become an issue as adults get older — affecting self-esteem and contributing to nutrition problems by limiting the types of food that someone can eat. In addition, poor oral hygiene can lead to a number of diseases and conditions, including gum disease and oral cancer. Prevention Keep your oral health in good shape by practicing the following: Drink fluoridated water and use fluoride toothpaste. Take care of your teeth and gums. Thoroughly brushing and flossin...