Gemination is a rare developmental disorder in tooth’s hard tissues, as a consequence of a dental germ division, characterized by invagination that will provoke an incomplete formation of two teeth, which results in two crowns partially or totally separated with one root and one unique root canal. Concepts as double tooth, double formations, joined teeth are used to determine this dental anomaly. Total teeth numbers in germination are normal. Prevalence is in frequent, being usually found in the anterior maxillary region. Even though etiology is unknown it is related to complex interrelated genetic and environmental factors.

This article reviews literature about germination and a case of an 8 year old female infant who presented an asymptomatic geminated maxillary temporal canine; which did not need treatment.

Keywords: tooth geminated, dental anatomy, dental anomalies