The dental service offers a free medical check-up for children between 3 and 6 years of age, usually free of charge, in day-care centers. Both the teeth and the position of the teeth are checked. In this way, the children can get used to the dental examination at an early stage in a familiar environment. All parents then receive the “Green Parents Letter” with the test results. In addition, it contains a recommendation for regular preventive examinations in the dental practice.