Abstract
A large cyst in the maxilla in relation to a nonvital tooth is not a common occurrence. The present case report demonstrates an unusual case of a giant cyst in the right maxillary antrum region extending from the anterior to posterior right maxilla with no intraoral bony and soft tissue expansion of a healthy 31-year-old female. However, bone erosion was noted and integrity of important anatomical structures of the right maxillary sinus was affected. The adjacent teeth were nonvital without any evidence of root resorption. Conventional root canal treatment together with surgical enucleation of the affected teeth at 6 months follow-up resulted in the successful resolution of the cyst with complete bone regeneration.
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