[The classification of defects in the dental arches of children and orthodontic treatment methods].

Dentition defects occurring in children are classified into 6 classes with subclasses in some of them. Class I includes dentition with defects in the frontal part, class II includes dentitions with distal defects. Both classes include special subclasses for dentition with defects of deciduous teeth, of permanent teeth with underdeveloped roots, and of permanent teeth with mature roots. Non-distal dentition defects (class III) are divided into two subclasses: unilateral and bilateral. Class IV includes dentition with multiple defects in various age groups. Dentition defects combined with maxillofacial abnormalities, deformations, and defects are classified as class V. Primary hypo- and anodontia are referred to class VI. Indications to fitting with removable plate prostheses, permanent bridge prostheses, and prosthetic devices of various design to repair the defects of various localization, extent, and the degree of development of the maxillofacial area are defined. Special attention is paid to fixation of prostheses, the most intricate problem in prostheses of dentition defects in children. The suggested classification is practically important for the diagnosis and planning of orthodontic treatment of children with dentition defects.