Abstract
It is well known that in childhood the dentigerous cyst, which is the most common of the jaw cysts, develops in association with the apical lesion of the deciduous predecessor, without inflammatory causes.
In this case of an 8 year old boy, the cystic tissue, located at the center of the right upper central and lateral incisors, caused significant disturbance in the eruption and developmental anomaly. After surgical treatment of the marsupialization, occlusal guidance was exerted through the traction of the permanent teeth and orthodontic treatment, which lasted from the commenced eruption of the permanent incisors to the attained eruption of the second permanent molars. This long-term observation, confirmed that a good permanent dentition was obtained in both the functional and aesthetical aspects
