[Tooth crowding and oral hygiene].
D000293:Adolescent; D005260:Female; D006801:Humans; D008297:Male; D008310:Malocclusion / Q000453:epidemiology*; D009909:Oral Health; D009911:Oral Hygiene Index; D011044:Poland; D014505:Urban Population
Der Zahnengstand und die Mundhygiene.