{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,27]],"date-time":"2026-05-27T15:39:11Z","timestamp":1779896351695,"version":"3.53.1"},"reference-count":46,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2024,6,1]],"date-time":"2024-06-01T00:00:00Z","timestamp":1717200000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"funder":[{"DOI":"10.13039\/100030982","name":"Straumann Group","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100030982","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Clinical Oral Implants Res"],"published-print":{"date-parts":[[2024,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objectives<\/jats:title><jats:p>To evaluate the survival rates and marginal bone loss of narrow\u2010diameter titanium\u2010zirconium implants supporting complete maxillary and mandibular overdentures up to 3\u2009years after loading.<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and Methods<\/jats:title><jats:p>Ten completely edentulous patients who were dissatisfied with their complete dentures were enrolled. Two narrow\u2010diameter implants were placed in the canine region of the maxilla and mandible. After second\u2010stage surgery, implant\u2010supported overdentures (palatal\u2010free) attached by parallel alignable stud\u2010attachments were placed. Patients were followed periodically for up to 36\u2009months. Standardized radiographs were taken at baseline, 12 and 36\u2009months to analyze mean marginal bone level changes around the implants.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The Kaplan\u2013Meier survival rates were 100% for mandibular and 68.0% (SE\u2009\u00b1\u200910.9%) for maxillary implants at 36\u2009months (<jats:italic>p<\/jats:italic>\u2009=\u2009.008). Six maxillary implants failed after loading; no mandibular implants were lost. Five implants failed due to loss of osseointegration. One implant fractured. The mean marginal bone level changes around the analyzed implants (<jats:italic>n<\/jats:italic>\u2009=\u200928, 9 patients) were \u22120.71\u2009\u00b1\u20090.82\u2009mm in the mandible and \u22122.08\u2009\u00b1\u20091.52\u2009mm in the maxilla at the 36\u2010month follow\u2010up. The difference in marginal bone level changes between the maxilla and mandible was significant (<jats:italic>p<\/jats:italic>\u2009=\u2009.019) at the 12\u2010 and 36\u2010month follow\u2010ups.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Two narrow\u2010diameter titanium\u2010zirconium implants with stud\u2010attachments showed a highly satisfactory outcome in the mandible. The maxillary implants showed a high failure rate and significantly more bone loss over time than the mandibular implants. The minimal concept of two implants and an overdenture should be limited to the edentulous mandible.<\/jats:p><\/jats:sec>","DOI":"10.1111\/clr.14303","type":"journal-article","created":{"date-parts":[[2024,6,1]],"date-time":"2024-06-01T09:35:00Z","timestamp":1717234500000},"page":"1138-1150","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Maxillary and mandibular overdentures retained by two unsplinted narrow\u2010diameter titanium\u2010zirconium implants \u2013 A\u00a0clinical pilot study"],"prefix":"10.1111","volume":"35","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4309-0707","authenticated-orcid":false,"given":"Jaana\u2010Sophia","family":"Kern","sequence":"first","affiliation":[{"name":"Department of Prosthodontics and Biomaterials, Center for Implantology, Medical Faculty RWTH Aachen University  Aachen Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Esra","family":"Salin","sequence":"additional","affiliation":[{"name":"Department of Prosthodontics and Biomaterials, Center for Implantology, Medical Faculty RWTH Aachen University  Aachen Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dirk","family":"Elvers","sequence":"additional","affiliation":[{"name":"Department of Oral and Maxillofacial Surgery, Medical Faculty RWTH Aachen University  Aachen Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anne","family":"Rittich","sequence":"additional","affiliation":[{"name":"Department of Prosthodontics and Biomaterials, Center for Implantology, Medical Faculty RWTH Aachen University  Aachen Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1924-071X","authenticated-orcid":false,"given":"Taskin","family":"Tuna","sequence":"additional","affiliation":[{"name":"Department of Prosthodontics and Biomaterials, Center for Implantology, Medical Faculty RWTH Aachen University  Aachen Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Frank","family":"H\u00f6lzle","sequence":"additional","affiliation":[{"name":"Department of Oral and Maxillofacial Surgery, Medical Faculty RWTH Aachen University  Aachen Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stefan","family":"Wolfart","sequence":"additional","affiliation":[{"name":"Department of Prosthodontics and Biomaterials, Center for Implantology, Medical Faculty RWTH Aachen University  Aachen Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2024,6]]},"reference":[{"key":"e_1_2_13_2_1","doi-asserted-by":"publisher","DOI":"10.1111\/cid.12711"},{"key":"e_1_2_13_3_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1708\u20108208.2010.00324.x"},{"key":"e_1_2_13_4_1","doi-asserted-by":"publisher","DOI":"10.1563\/aaid\u2010joi\u2010D\u201019\u201000352"},{"key":"e_1_2_13_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ijom.2016.01.004"},{"key":"e_1_2_13_6_1","doi-asserted-by":"publisher","DOI":"10.1111\/jcpe.12957"},{"key":"e_1_2_13_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/s0901\u20105027(88)80047\u2010x"},{"key":"e_1_2_13_8_1","doi-asserted-by":"publisher","DOI":"10.1111\/clr.13137"},{"key":"e_1_2_13_9_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600\u20100501.2011.02296.x"},{"key":"e_1_2_13_10_1","doi-asserted-by":"publisher","DOI":"10.1080\/01688639408402625"},{"key":"e_1_2_13_11_1","doi-asserted-by":"publisher","DOI":"10.1111\/clr.13707"},{"key":"e_1_2_13_12_1","doi-asserted-by":"publisher","DOI":"10.4317\/medoral.20920"},{"key":"e_1_2_13_13_1","first-page":"111","article-title":"New classification of physical status","volume":"24","author":"Dripps R.","year":"1963","journal-title":"Anesthesiology"},{"key":"e_1_2_13_14_1","doi-asserted-by":"publisher","DOI":"10.1111\/prd.12041"},{"key":"e_1_2_13_15_1","doi-asserted-by":"publisher","DOI":"10.3390\/dj10050083"},{"key":"e_1_2_13_16_1","doi-asserted-by":"publisher","DOI":"10.3109\/00016358609041311"},{"key":"e_1_2_13_17_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41432\u2010020\u20100077\u20107"},{"key":"e_1_2_13_18_1","first-page":"617","volume-title":"IDZ \u2013 Materialienreihe","author":"Jordan A. 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