Maxillary cysts require surgical removal. Most maxillary cysts originate from apical inflammation, where inflammation collects in the apical area after the nerve of the tooth becomes septic, and prolonged irritation triggers a maxillary cyst. The cyst will not disappear on its own and must be surgically removed. Moreover, the presence of the cyst wall will make it easy to recur, and the cyst wall must be cleaned out when the cyst is removed. At the same time with the root canal treatment of the tooth, remove the infected nerve for root canal disinfection, inflammation control after root canal filling, to eliminate re-infection. Simply removing the cyst without root canal treatment is not a complete cure. Maxillary cysts require timely surgical removal, along with root canal treatment, which can be done at the dentist’s office.