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|Type:||Artigo de periódico|
|Title:||Resolution of persistent periapical infection by endodontic surgery|
|Abstract:||Aim To examine the surfaces of a root tip removed during surgical endodontic treatment for the presence of microorganisms. Summary The present clinical case illustrates an endodontic retreatment of a maxillary premolar tooth with a fistula and periapical reaction. The case was under treatment for 1 year, during which an intracanal medicament was replaced several times. As the lesion did not decrease and exudate was persistent through the fistula and root canal, root end resection with root end filling was performed. Microbiological samples were collected from the fistula, where Propionibacterium acnes, a species associated with endodontic failures, was detected by appropriate anaerobic technique. The resected root apex was observed by scanning electron microscopy (SEM), which revealed cocci and fungal forms surrounding one of the foramina. After 12 months, the periapical lesion had reduced. Key learning poionts Persistent extraradicular infections are not affected by the action of antimicrobial agents such as irrigants and medicaments used during root canal treatment. Apical surgery is a suitable alternative for definitive removal of an established refractory infection, promoting repair of difficult cases.|
|Editor:||Blackwell Publishing Ltd|
|Appears in Collections:||Artigos e Materiais de Revistas Científicas - Unicamp|
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