[Juvenile periodontopathies as a manifestation of an ectodermal abnormality].

By means of three cases of progressive infantile periodontal diseases the author points at simultaneous alteration in the keratinization of the skin in the sense of keratosis palmaris et plantaris (Papillon-Lefèvre-Disease). This complex of anomalies is supposed to be a hereditary acro-ectodermal systemic inferiority, primarily consisting in an epithelial disturbance. But it is also necessary to regard the infantile progressive periodontal insufficiency as an obligatory or facultative attendant symptom of general diseases. The therapy is only symptomatic, complete return to health is not realizable.