{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,27]],"date-time":"2026-03-27T00:47:12Z","timestamp":1774572432751,"version":"3.50.1"},"reference-count":79,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2023,5,29]],"date-time":"2023-05-29T00:00:00Z","timestamp":1685318400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Clin Implant Dent Rel Res"],"published-print":{"date-parts":[[2023,10]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>The survival rate, marginal bone loss and soft tissue health of the Ankylos implants and the balanced base abutments in all\u2010on\u2010four or six implant restoration of edentulous or terminal dentition patients has not been reported in the clinical research.<\/jats:p><\/jats:sec><jats:sec><jats:title>Purpose<\/jats:title><jats:p>This retrospective study aimed to evaluate the Ankylos implants and the balanced base abutments in all\u2010on\u2010four or six implant restoration of edentulous or terminal dentition patients after 1\u20138\u2009years of follow\u2010up.<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and Methods<\/jats:title><jats:p>A retrospective study was conducted based on the medical records of 33 patients who received all\u2010on\u2010four or six treatments from April 2014 to May 2020. Four radiographic examinations [immediate postoperative (T0), definitive restorations (T1), 1\u20133\u2009years after prosthetic restorations (T2), and more than 3\u2009years after prosthetic restorations (T3)] were obtained to evaluate vertical bone height (VBH). We also calculated the survival rate and examined the condition of soft tissue with this implant system in edentulous or terminal dentition patients. Three\u2010level linear model analyses were used to explore potential risk factors for VBH changes on the mesial and distal sides. The generalized linear model was used to analyze the influencing factors of BOP and plaque.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>A total of 218 implants were included in this study. The cumulative survival rate of the implants was 97.25% before the definitive prosthesis, 96.33% within 3\u2009years of follow\u2010up and 95.32% after more than 3\u2009years of follow\u2010up. The mean\u2009\u00b1\u2009standard deviation (SD) bone losses of the VBH were 0.27\u2009\u00b1\u20090.05\u2009mm (T1\u2010T3) on the mesial side and 0.49\u2009\u00b1\u20090.06\u2009mm (T1\u2010T3) on the distal side. During 1\u20138\u2009years of follow\u2010up, the height and angle of the abutment (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001), the mandible implant site (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001), the length of the implant (<jats:italic>p<\/jats:italic>\u2009=\u20090.014\u2009&lt;\u20090.05) and age (<jats:italic>p<\/jats:italic>\u2009=\u20090.029\u2009&lt;\u20090.05) showed statistically significant effects on vertical mesial bone height (VMBH) and vertical distal bone height (VDBH). The risk of BOP among participants who brushed three times a day was lower than those who brushed less than three times. The plaque risk of short abutment height was higher than the long abutment.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The current study showed that the Ankylos implants with the balanced base abutments in all\u2010on\u2010four or six implants treatment is a viable and predictable option with a high survival rate and low marginal bone loss in edentulous or terminal dentition patients. VBH around the implants was strongly associated with the mandible implant site, abutment height and angle, the length of the implant and age. Moreover, teeth\u2010brushing times and abutment height significantly affect soft tissue health.<\/jats:p><\/jats:sec>","DOI":"10.1111\/cid.13228","type":"journal-article","created":{"date-parts":[[2023,5,30]],"date-time":"2023-05-30T06:45:51Z","timestamp":1685429151000},"page":"815-828","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Evaluation of a platform\u2010switched Morse taper connection for all\u2010on\u2010four or six treatment in edentulous or terminal dentition treatment: A retrospective study with 1\u20138\u2009years of follow\u2010up"],"prefix":"10.1111","volume":"25","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9982-7187","authenticated-orcid":false,"given":"Yude","family":"Ding","sequence":"first","affiliation":[{"name":"Center for Plastic &amp; Reconstructive Surgery, Department of Stomatology Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College  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