{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,30]],"date-time":"2026-04-30T19:59:40Z","timestamp":1777579180032,"version":"3.51.4"},"reference-count":21,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2024,6,13]],"date-time":"2024-06-13T00:00:00Z","timestamp":1718236800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Diagnostics"],"abstract":"<jats:p>Backgrounds: Tooth loss in the posterior maxilla often necessitates dental implant placement, but the maxillary sinus anatomy poses challenges, especially during sinus floor elevation. Mesially angled implants are an alternative for total edentulism, but for single tooth deficiencies, palatally angled implants may offer a solution. This study evaluates the prevalence of avoiding sinus floor elevation by placing palatally angled implants in cases with a single missing tooth. Methods: A retrospective study at Ahmet Kele\u015fo\u011flu Faculty of Dentistry involved 100 participants with a single missing tooth and prior CBCT scans. Virtual implants were placed using OnDemand3D (version 1.0.7462) software. On CBCT sections, implants were angled palatally to avoid sinus or nasal cavity perforation. Statistical analysis was conducted using R and MedCalc (version 4.3.2) software. Results: Of the participants (60% female, average age 50.45), 76 edentulous regions required sinus elevation. The implant placeability rates varied across zones (second molar: 39.3%, first molar: 63.1%, second premolar: 78.5%). Implant placement at a palatal angle was significantly higher in the second premolar and first molar regions. Statistically significant differences were observed in the implant placeability between regions. Conclusions: This study supports the feasibility of avoiding sinus floor elevation through palatally angled implants in specific cases, reducing the associated complications.<\/jats:p>","DOI":"10.3390\/diagnostics14121242","type":"journal-article","created":{"date-parts":[[2024,6,13]],"date-time":"2024-06-13T04:30:12Z","timestamp":1718253012000},"page":"1242","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Avoiding Sinus Floor Elevation by Placing a Palatally Angled Implant: A Morphological Study Using Cross-Sectional Analysis Determined by CBCT"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5196-8105","authenticated-orcid":false,"given":"Do\u011fan Ilgaz","family":"Kaya","sequence":"first","affiliation":[{"name":"Faculty of Dentistry, Oral and Maxillofacial Surgery, Karamanoglu Mehmetbey University, Karaman 70200, Turkey"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5863-5928","authenticated-orcid":false,"given":"Samed","family":"\u015eat\u0131r","sequence":"additional","affiliation":[{"name":"Faculty of Dentistry, Oral and Maxillofacial Radiology, Karamanoglu Mehmetbey University, Karaman 70200, Turkey"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Beyza","family":"\u00d6zta\u015f","sequence":"additional","affiliation":[{"name":"Faculty of Dentistry, Oral and Maxillofacial Surgery, \u0130stanbul Kent University, Istanbul 34433, Turkey"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4582-9018","authenticated-orcid":false,"given":"Hasan","family":"Y\u0131ld\u0131r\u0131m","sequence":"additional","affiliation":[{"name":"Kamil Ozdag Faculty of Science, Department of Mathematics, Karamanoglu Mehmetbey University, Karaman 72100, Turkey"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2024,6,13]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"103","DOI":"10.1111\/prd.12414","article-title":"Complications in sinus lifting procedures: Classification and management","volume":"88","author":"Molina","year":"2022","journal-title":"Periodontology 2000"},{"key":"ref_2","first-page":"413","article-title":"Repair of the perforated sinus membrane with a resorbable collagen membrane: A human study","volume":"19","author":"Proussaefs","year":"2004","journal-title":"Int. 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Sci."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"407","DOI":"10.11607\/jomi.9215","article-title":"Evaluation of Sinus Pneumatization and Dental Implant Placement in Atrophic Maxillary Premolar and Molar Regions","volume":"37","year":"2022","journal-title":"Int. J. Oral Maxillofac. Implant."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"169","DOI":"10.1038\/s41415-024-7050-3","article-title":"A literature review on prosthetically designed guided implant placement and the factors influencing dental implant success","volume":"236","author":"Nulty","year":"2024","journal-title":"Br. Dent. J."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"840","DOI":"10.1111\/cid.13214","article-title":"Influence of implant restorative emergence angle and contour on peri-implant marginal bone loss: A systematic review and meta-analysis","volume":"25","author":"Atieh","year":"2023","journal-title":"Clin. Implant. Dent. Relat. Res."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"47","DOI":"10.1016\/j.compbiomed.2017.04.015","article-title":"Biomechanical evaluation of implant-supported prosthesis with various tilting implant angles and bone types in atrophic maxilla: A finite element study","volume":"86","author":"Korkmaz","year":"2017","journal-title":"Comput. Biol. Med."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"8045","DOI":"10.1007\/s12633-023-02646-6","article-title":"Fabrication, Evaluation, and Performance Ranking of Tri-calcium Phosphate and Silica Reinforced Dental Resin Composite Materials","volume":"15","author":"Saini","year":"2023","journal-title":"Silicon"}],"container-title":["Diagnostics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2075-4418\/14\/12\/1242\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T14:57:46Z","timestamp":1760108266000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2075-4418\/14\/12\/1242"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,6,13]]},"references-count":21,"journal-issue":{"issue":"12","published-online":{"date-parts":[[2024,6]]}},"alternative-id":["diagnostics14121242"],"URL":"https:\/\/doi.org\/10.3390\/diagnostics14121242","relation":{},"ISSN":["2075-4418"],"issn-type":[{"value":"2075-4418","type":"electronic"}],"subject":[],"published":{"date-parts":[[2024,6,13]]}}}