Optimization of diagnostics and orthodontic treatment planning in children and adolescents with multiply adentia.

The data of clinical examination, diagnostic models and panoramic x-rays investigation of the 332 patients at the age from 6 to 18 years with adentia were analysed. The congenital absence of more than 6 teeth was defined as oligodontia. The purpose of the study was to evaluate the prevalence of missing teeth patterns and other dental abnormalities such as microdontia, persistent deciduous teeth, ankylosis, taurodontism, impaction and transposition in children and adolescents with isolated and syndromic oligodontia to optimize the diagnostic and orthodontic treatment plan.

[Some aspects of terminology, classification and incidence of hypodontia].

The paper presents the data of literature review on epidemiology, patterns and prevalence of hypodontia depending on race, nationality and gender of the patients. Correlation between congenital absence of the temporary and permanent teeth are discussed as well as the matters of the terminology and classification depending on the severity of this abnormality.