apical cyst


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apical cyst

A cyst near the apex of the root of a nonvital tooth.
See also: cyst
References in periodicals archive ?
A few research studies have shown that contrast-enhanced CBCT images can be used to differentiate between apical granulomas and apical cysts by measuring the lesion density (Fig.
Causes of failure include incomplete obturation, root perforation, external root resorption, coexistent periodontal-peri- radicular lesions, grossly overfilled or overextended canals, canals left unfilled, developing apical cysts, adjacent pulpless teeth, inadvertently removed silver points, broken instruments, unfilled accessory canals, constant trauma, and nasal floor perforation.3 In cases of endodontic treatment failure, the infection continues to persist in the intricate areas of the canal which in turn is responsible for re-infection in the peri apical area.