{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T01:59:23Z","timestamp":1760234363889,"version":"build-2065373602"},"reference-count":50,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2021,5,14]],"date-time":"2021-05-14T00:00:00Z","timestamp":1620950400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Medicina"],"abstract":"<jats:p>Background and Objectives: Periapical cystic lesions are a pathology frequently addressed to endodontic specialists. Although their therapy is still not standardized, the treatment should be as conservative as possible and by endodontic means, as they are lesions of endodontic origin. The present case report describes two cases of upper central incisors with large cyst-like periapical lesions, and their one-year follow up. Materials and Methods: Endodontic orthograde treatment was performed under copious irrigation with sodium hypochlorite, in association with calcium hydroxide as an intra-canal medication for both teeth. Root canal filling was achieved in a separate appointment using the continuous wave of condensation technique. A decompression procedure was used in association with endodontic therapy in the second case to reduce the pressure inside the cystic lesion and to allow its drainage, and only because the root canal could not be dried three weeks after medication. Initial cone beam computed tomography (CBCT) investigations, as well as at the one-year follow up, were used to compare the evolution of the lesion. Results: Both cases had a favorable outcome. New bone formation in the periapical region and complete resolution of the lesion was observed at the one-year control in the first case. In the second case, although the lesion was still not completely healed at 12 months, a significant reduction in its size could be observed, showing active signs of healing. Conclusions: Endodontic treatment is the first choice option in the management of teeth with pulpal necrosis and large periapical cystic-like lesions. Decompression is the only surgical procedure recommended when the canals cannot be dried and obturated. Large surgical interventions are unnecessary in cases where endodontic treatment can be performed.<\/jats:p>","DOI":"10.3390\/medicina57050497","type":"journal-article","created":{"date-parts":[[2021,5,14]],"date-time":"2021-05-14T10:54:22Z","timestamp":1620989662000},"page":"497","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Conservative Approach in the Management of Large Periapical Cyst-Like Lesions. A Report of Two Cases"],"prefix":"10.3390","volume":"57","author":[{"given":"Roxana M.","family":"Talpos-Niculescu","sequence":"first","affiliation":[{"name":"Discipline of Restorative Dentistry and Endodontics, Research Center TADERP, Faculty of Dental Medicine, \u201cVictor Babes\u201d University of Medicine and Pharmacy, 300041 Timisoara, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Malina","family":"Popa","sequence":"additional","affiliation":[{"name":"Discipline of Pedodontics,  Pediatric Dentistry Research Center, Faculty of Dental Medicine, \u201cVictor Babes\u201d University of Medicine and Pharmacy, 300041 Timisoara, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6375-4705","authenticated-orcid":false,"given":"Laura C.","family":"Rusu","sequence":"additional","affiliation":[{"name":"Discipline of Oral Pathology, Multidisciplinary Center for Research, Evaluation, Diagnosis and Therapies in Oral Medicine, Faculty of Dental Medicine, \u201cVictor Babes\u201d University of Medicine and Pharmacy, 300041 Timisoara, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Marius O.","family":"Pricop","sequence":"additional","affiliation":[{"name":"Discipline of Oral and Maxillo-Facial Surgery, Faculty of Dental Medicine, \u201cVictor Babes\u201d University of Medicine and Pharmacy, 300062 Timisoara, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5245-2397","authenticated-orcid":false,"given":"Luminita M.","family":"Nica","sequence":"additional","affiliation":[{"name":"Discipline of Restorative Dentistry and Endodontics, Research Center TADERP, Faculty of Dental Medicine, \u201cVictor Babes\u201d University of Medicine and Pharmacy, 300041 Timisoara, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Serban","family":"Talpos-Niculescu","sequence":"additional","affiliation":[{"name":"Discipline of Oral and Maxillo-Facial Surgery, Faculty of Dental Medicine, \u201cVictor Babes\u201d University of Medicine and Pharmacy, 300062 Timisoara, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2021,5,14]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"348","DOI":"10.1177\/154411130401500604","article-title":"Pathogenesis of apical periodontitis and the causes of endodontic failures","volume":"15","author":"Nair","year":"2004","journal-title":"Crit. 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