OBJECTIVETo compare and analyse the distribution and characteristic of born missing teeth.

METHODSA total of 183 simple hypodontia patients was reviewed and statistically analysed.

RESULTSThere was no significant difference in the number of missing teeth between different sexs (P > 0.05), and there was also no significant difference in the number of missing teeth among different sites (maxilla, mandible or left and right sides) (P > 0.05). The mandibular second premolar was the most frequently missing tooth. The missing molars were more commonly seen in oligodontia patients who had six missing teeth or beyond than hypodontia patients with less than six missing teeth (P < 0.05).

CONCLUSIONSEach hypodontia patient has his own clinical manifestation, and appropriate treatment should be planed accordingly for these patients.