[Renewed examination of the group classification of partially edentulous arches by Eichner and application advices for studies on morbidity statistics].

The groups A1 to C3 of the "group classification of partially edentulous arches" by Eichner are characterized by the number of teeth and the topography of the natural dentition. This could be demonstrated in a clinical study on 1000 patients prepared by Blume-Gréger. The result shows a percentage of 49.5 in the groups A, 22.4% in the B-groups and 28.1% in the C-groups. Furthermore, these groups represent the course of tooth loss also regarding the functional value of the natural dentition. Thus, this classification provides a standard for the degree of morbidity of the dentition and is suitable for application in studies on morbidity statistics. When used for documentation files there is an error possibility of 1.9%.