{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,8]],"date-time":"2026-06-08T18:45:08Z","timestamp":1780944308433,"version":"3.54.1"},"reference-count":18,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2021,6,16]],"date-time":"2021-06-16T00:00:00Z","timestamp":1623801600000},"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>Oro-antral communication (OAC) acts as a pathway for bacteria between the maxillary sinus and oral cavity, and is a common complication after the removal of a dental implant or extraction of a tooth from the maxillary posterior area. In the case of an untreated OAC, oro-antral fistula develops and becomes epithelialized. We aimed to introduce a treatment for OAC closure via a sinus bone grafting procedure using bone tacks and a collagen membrane with an allograft. The procedure was performed by applying an absorbable membrane made in pouch form. This membrane acted as a barrier for closing the large sinus membrane perforation. Bone tacks were used to fix the membranes. Subsequently, the maxillary sinus was filled with the allograft, and the absorbable membrane was reapplied. Primary closure was achieved by performing a periosteum-releasing incision for a tension-free suture. After 6 months, sufficient bone dimensions were gained without any occurrence of maxillary sinusitis or recurrence of OAC. Additional bone grafts and implantation could be performed to rehabilitate the maxillary posterior area. We conclude that this technique might be a useful treatment for reconstructing the maxillary posterior area with simultaneous sinus bone graft and OAC closure.<\/jats:p>","DOI":"10.3390\/medicina57060626","type":"journal-article","created":{"date-parts":[[2021,6,16]],"date-time":"2021-06-16T10:27:07Z","timestamp":1623839227000},"page":"626","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":21,"title":["Implant Placement after Closure of Oroantral Communication by Sinus Bone Graft Using a Collagen Barrier Membrane in the Shape of a Pouch: A Case Report and Review of the Literature"],"prefix":"10.3390","volume":"57","author":[{"given":"Jae-Ha","family":"Baek","sequence":"first","affiliation":[{"name":"Department of Periodontology, School of Dentistry, Chosun University, Gwangju 61452, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Byung-Ock","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Periodontology, School of Dentistry, Chosun University, Gwangju 61452, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1911-3454","authenticated-orcid":false,"given":"Won-Pyo","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Periodontology, School of Dentistry, Chosun University, Gwangju 61452, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2021,6,16]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"255","DOI":"10.1111\/j.1834-7819.2003.tb00040.x","article-title":"Non-surgical management of an oro-antral fistula in a patient with HIV infection","volume":"48","author":"Logan","year":"2003","journal-title":"Aust. Dent. J."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"333","DOI":"10.1016\/j.joms.2010.02.061","article-title":"Surgical treatment of oroantral fistulas: A clinical study of 23 Cases","volume":"69","author":"Emes","year":"2011","journal-title":"J. Oral Maxillofac. Surg."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"13","DOI":"10.1186\/s40729-019-0165-7","article-title":"Decision-making in closure of oroantral communication and fistula","volume":"5","author":"Parvini","year":"2019","journal-title":"Int. J. Implant Dent."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"40","DOI":"10.1186\/s40729-018-0152-4","article-title":"Surgical options in oroantral fistula management: A narrative review","volume":"4","author":"Parvini","year":"2018","journal-title":"Int. J. Implant Dent."},{"key":"ref_5","first-page":"424","article-title":"Use of the buccal fat pad in maxillary and sinus grafting of the severely atrophic maxilla preparatory to implant reconstruction of the partially or completely edentulous patient: Technical note","volume":"17","author":"Liversedge","year":"2002","journal-title":"Int. J. Oral Maxillofac. Implant."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"55","DOI":"10.1016\/S1061-3315(18)30042-8","article-title":"Team approach for closure of oroantral and oronasal fistulae","volume":"8","author":"Kraut","year":"2000","journal-title":"Atlas Oral Maxillofac. Surg. Clin. N. Am."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"1384","DOI":"10.1016\/j.joms.2009.07.044","article-title":"Closure of oroantral communications: A review of the literature","volume":"68","author":"Visscher","year":"2010","journal-title":"J. Oral Maxillofac. 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Assoc."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"822","DOI":"10.1288\/00005537-196905000-00005","article-title":"Bone graft closure of large or persistent oro-maxillary fistula","volume":"79","author":"Proctor","year":"1969","journal-title":"Laryngoscope"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"e86","DOI":"10.1016\/j.bjoms.2011.03.262","article-title":"Closure of oroantral fistula using auricular cartilage: A new method to repair an oroantral fistula","volume":"49","author":"Isler","year":"2011","journal-title":"Br. J. Oral Maxillofac. Surg."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"267","DOI":"10.7150\/ijms.7.267","article-title":"Treatment of oroantral fistula with autologous bone graft and application of a non-reabsorbable membrane","volume":"7","author":"Scattarella","year":"2010","journal-title":"Int. J. Med. 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