Radicular cyst

Radicular cyst

  • It is a liquid-filled cavity lined with epithelium. It develops in a pre-existing periapical granuloma
  • It has the same radiographic characteristics as periapical granuloma, but is usually larger in size.
    • Round or oval radiolucency
    • Well defined borders
    • well corticated if longstanding
  • The radiopaque border continuous with the Lamina Dura of the associated tooth. The apex of the tooth can frequently be identified within the lesion.
  • The adjacent teeth can be displaced but are rarely resorbed.


Different cases of radicular cyst.

A case of radicular cyst: before and after the extraction of the associated tooth.

Radicular cyst associated with upper left lateral incisor

Radicular cyst at the site of 21.

Large odontogenic cyst arising from the right upper first molar. Perforation of the palatal cortex. Remodeling and perforation of the floor of the sinus and mucosal thickening.

Very large odontogenic cyst, extending from the 13 to 25. Expansion and perforation of the palatal and buccal cortical bone. Nasal floor is perforated.