{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,2,21]],"date-time":"2025-02-21T21:06:22Z","timestamp":1740171982655,"version":"3.37.3"},"reference-count":34,"publisher":"Georg Thieme Verlag KG","issue":"02","license":[{"start":{"date-parts":[[2023,1,25]],"date-time":"2023-01-25T00:00:00Z","timestamp":1674604800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Eur J Dent"],"published-print":{"date-parts":[[2023,5]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Severe atrophic posterior maxillary ridge (residual bone height\u2009&lt;\u20093\u2009mm) could be a challenging situation to place dental implants. Several treatment options have been proposed, but some of them may require advanced surgical skills to achieve best results. In this article, we present a novel and easier technique to allow implant placing in localized areas of severe atrophy. In a first step, a 4.5-length extra-short (unloaded) implant is placed after a transcrestal maxillary sinus floor augmentation (MSFA). After the gained apical bone consolidation, this \u201ctemporary implant\u201d is atraumatically removed and a longer and wider definitive implant is placed to support the definitive single restoration. The case of a 45-year-old female treated with this approach is also presented. The patient suffered a severe resorption in the upper right molar area after a tooth extraction. Four months after the \u201ctemporary implant\u201d placement and MSFA grafting with plasma rich in growth factors and autologous bone, 3\u2009mm of dense apical bone gain could be observed. In a second surgical time, the 4.5\u2009mm-length \u201ctemporary implant\u201d was removed, and a 5.5\u2009mm-length \u201cdefinitive implant\u201d was placed. This second implant was placed in a denser type 1 (1,000 Hounsfield Unit) new formed apical bone. Four months later, the implant was loaded with a screw-retained crown over a transepithelial (intermediate abutment). After 1-year follow-up, the implant was in health and no mechanical or biological complications were noticed. The satisfactory results of this case encourage the realization of new studies to elucidate its reproducibility.<\/jats:p>","DOI":"10.1055\/s-0042-1755557","type":"journal-article","created":{"date-parts":[[2023,1,25]],"date-time":"2023-01-25T23:44:24Z","timestamp":1674690264000},"page":"560-566","source":"Crossref","is-referenced-by-count":1,"title":["Two-Step Progressive Transcrestal Sinus Augmentation Using a 4.5\u2009mm Unloaded Implant as a \u201cTemporary Implant\u201d in Highly Atrophic Ridge: Case Report"],"prefix":"10.1055","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8386-5303","authenticated-orcid":false,"given":"Eduardo","family":"Anitua","sequence":"additional","affiliation":[{"name":"Private Practice, Eduardo Anitua Clinic, Vitoria, Spain"},{"name":"University Institute for Regenerative Medicine and Oral Implantology, UPV\/EHU - Eduardo Anitua Foundation, Vitoria, Spain"},{"name":"BTI Biotechnology Institute, Vitoria, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"194","published-online":{"date-parts":[[2023,1,25]]},"reference":[{"issue":"S 01","key":"ref1","doi-asserted-by":"crossref","first-page":"S291","DOI":"10.1002\/JPER.16-0810","article-title":"The etiology of hard- and soft-tissue deficiencies at dental implants: a narrative review","volume":"89","author":"C HF H\u00e4mmerle","year":"2018","journal-title":"J Periodontol"},{"issue":"04","key":"ref2","first-page":"313","article-title":"Bone healing and soft tissue contour changes following single-tooth extraction: a clinical and radiographic 12-month prospective study","volume":"23","author":"L Schropp","year":"2003","journal-title":"Int J Periodontics Restorative Dent"},{"key":"ref3","doi-asserted-by":"crossref","first-page":"88","DOI":"10.1016\/j.aanat.2018.11.003","article-title":"15-year follow-up of short dental implants placed in the partially edentulous patient: mandible vs. maxilla","volume":"222","author":"E 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