One of the best ways to deal with tooth decay is to prevent it in the first place. Decay prevention involves healthy oral hygiene habits such as regular brushing and flossing, as well as a healthy diet that is low in sugar.
Unfortunately when decay has developed into dentine, a filling may be required. In some cases, it may be necessary to use a crown to cover and protect the tooth. Root canal treatments can also help to eliminate toothache caused by decay that has gone into the nerve.