Two cases of less invasive treatment for radicular cyst in primary dentition

Radicular cysts in the primary dentition are rare, with such cysts most commonly occurring in the permanent dentition. Pulpal treatment for teeth affected by dental caries has been suggested as a causative factor of radicular cysts. We report two cases of radicular cysts occurring in the primary dentition after pulpectomy. Marsupialization of the cystic lesion was performed in both cases, resulting in uneventful eruption of the successive permanent tooth. A resin appliance in one case and antibiotic ointment-impregnated gauze only in the other were used to fill and promote healing of the cystic cavity. The results suggest that this approach is effective in inducing complete healing of radicular cysts in the primary dentition and avoiding the formation of residual cysts. Furthermore, use of antibiotic-impregnated gauze appears to offer an easier option than other reported methods in the management of radicular cysts.