[Cases analysis and clinical classification of oligodontia].

OBJECTIVE

To classify the clinical symptoms of oligodontia and summarize the characteristics of the diseases.

METHODS

33 patients with congenitally permanent teeth missing (6 or more than 6) were taken clinical examination, diagnosis, prosthetic treatment and made records of the status of tooth agenesis, systemic symptoms, and family history.

RESULTS

The symptoms of oligodontia were clinically classified into two groups: oligodontia with or without systemic syndromes. And the former has two typical kinds of diseases: anhidrotic/hypohidrotic ectodermal dysplasia (EDA) and Rieger syndrome.

CONCLUSIONS

Correct diagnosis and early treatment for these patients are of very importance.