Oral hygienist Yvonne Kort set no less a goal than to provide a comprehensive picture of the most common oral diseases, their causes and prevention. In his book Hıánypótló, he presents the subtle workings and hidden connections of the human body in an enjoyable and easy-to-understand style, even for laymen. In the first half of the book, we can learn about the processes taking place in the mouth and the digestive system as a whole, as well as the background of the most common complaints, while in the second half we can read useful practical advice and tips on proper oral care, foods to avoid, and stress management techniques.