Radicular cysts are inflammatory jaw cysts at the apices of teeth with infected and necrotic pulps. A radicular cyst arises from the epithelial residues in the periodontal ligament as a result of inflammation, usually following death of the pulp. Some authors propose that radicular cysts must be totally enucleated surgically to remove all epithelial remnants. In this article, a case report of radicular cyst and its treatment is discussed in regard to current literature.