{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,20]],"date-time":"2025-10-20T00:29:30Z","timestamp":1760920170325,"version":"build-2065373602"},"reference-count":19,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2019,8,22]],"date-time":"2019-08-22T00:00:00Z","timestamp":1566432000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["aap.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Periodontology"],"published-print":{"date-parts":[[2020,2]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>In sinus augmentation, when remaining bone height is \u22645\u00a0mm, a lateral window approach is often the preferred choice; nonetheless, patients prefer to have a less invasive approach such as crestal sinus augmentation (CSA). Prior case reports have described the use of various staged approaches of a CSA technique in cases of limited bone height. The aim of this report was to describe the results of a case series in which a two\u2010stage CSA technique was used in patients with 4 to 6\u00a0mm of bone height.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Nineteen subjects with 28 sinuses of initial vertical bone height of 4 to 6\u00a0mm were included in which a two\u2010stage CSA technique was used in place of a lateral window approach. In the first surgery, 0.3\u00a0mL graft material was inserted into all sites. In the second surgery, 13 sites were filled with 0.2\u00a0mL graft material and remaining 15 sites were filled with 0.4\u00a0mL.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>No damage was observed in the maxillary sinus floor membrane after first 0.2\u00a0mL filling; however, one case had Schneiderian membrane perforation after filling 0.4\u00a0mL. The average elevation height (EH) after first surgery was 5.81\u00a0\u00b1\u00a00.7\u00a0mm, 5.15\u00a0\u00b1\u00a00.91\u00a0mm before second surgery, 6.69\u00a0\u00b1\u00a00.89\u00a0mm with 0.2\u00a0mL filling (total 0.5\u00a0mL) and 8.11\u00a0\u00b1\u00a01.24\u00a0mm with 0.4\u00a0mL filling (total 0.7\u00a0mL). The thickness of maxillary sinus membrane before first surgery was 2.6\u00a0\u00b1\u00a02.59\u00a0mm; however, it has become 0.97\u00a0\u00b1\u00a01.59\u00a0mm before second surgery, with a decrease of 1.6\u00a0mm estimate.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>This case series that assessed outcomes of staged crestal maxillary sinus augmentation was an effective approach to elevating 6 or 8\u00a0mm alveolar bone height without causing major membrane perforation. However, the two\u2010stage approach was used in the limited residual bone height (4 to 6\u00a0mm) and required two separate surgical procedures.<\/jats:p><\/jats:sec>","DOI":"10.1002\/jper.18-0632","type":"journal-article","created":{"date-parts":[[2019,7,31]],"date-time":"2019-07-31T09:14:14Z","timestamp":1564564454000},"page":"194-201","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Effect of staged crestal maxillary sinus augmentation: A case series"],"prefix":"10.1002","volume":"91","author":[{"given":"Tetsuya","family":"Sonoda","sequence":"first","affiliation":[{"name":"Private Practice  Fukuoka Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kensuke","family":"Yamamichi","sequence":"additional","affiliation":[{"name":"Private Practice  Fukuoka 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