Our goal was to gain a better understanding of the prevalence of dental agenesis in the orthodontic patient population at University at Buffalo. The data was obtained from 1,302 charts of past and present orthodontic patients from SUNY at Buffalo. The diagnosis of dental agenesis was made by examining pre-treatment panoramic radiographs and pre-treatment photographs. Information regarding which teeth (if any) was missing, race, gender, and Angle's Dental Classification was obtained. Questioner was used to assess any familial component to the anomaly.

The prevalence of dental agenesis was 9.7%. Two missing teeth was the most common finding. Most common congenitally missing tooth was the maxillary lateral incisor (39.4%) followed by the mandibular second premolar (34.1%). More females had dental agenesis (p = 0.0095). An observed trend suggests a familial component in the etiology of dental agenesis. No differences were observed when comparing Angle's dental classification and agenesis (p = 0.3654).