{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,19]],"date-time":"2026-10-19T23:05:20Z","timestamp":1792451120656,"version":"4.5.0"},"reference-count":31,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2006,6,15]],"date-time":"2006-06-15T00:00:00Z","timestamp":1150329600000},"content-version":"vor","delay-in-days":14,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Clin Implant Dent Rel Res"],"published-print":{"date-parts":[[2006,6]]},"abstract":"<jats:title>ABSTRACT<\/jats:title><jats:p><jats:bold>Background:\u2002<\/jats:bold> Few long\u2010term follow\u2010up studies are available on implant treatment based on patient level data related to time.<\/jats:p><jats:p><jats:bold>Purpose\u2002<\/jats:bold> The aim of this study was to report 15\u2010year patient\u2010based data in relation to time of follow up after treatment with fixed prostheses supported by implants in the edentulous upper jaw.<\/jats:p><jats:p><jats:bold>Materials and Methods\u2002<\/jats:bold> Seventy\u2010six edentulous consecutive patients, provided with 450 turned Br\u00e5nemark implants, were followed up with regard to maintenance, complications, and radiographs taken during the follow\u2010up period.<\/jats:p><jats:p><jats:bold>Results\u2002<\/jats:bold> Forty\u2010four patients provided with 247 implants were lost to follow up. Patients followed up for 15 years showed as a group a trend of better implant survival than patients lost to follow up (<jats:italic>p<\/jats:italic> &gt; .05). Altogether, 37 implants and 5 fixed prostheses failed during the follow\u2010up period. Most implants were lost at abutment surgery (<jats:italic>n<\/jats:italic>\u2212 15) and another nine during the first year of function. The 15\u2010year implant and fixed prosthesis cumulative survival rate was 90.9 and 90.6%, respectively. Resin veneer fractures caused most problems, more frequent in the earlier stage while severe wear increased in the later stage of follow up. No implant fractures or loosening of abutment\/bridge locking screws were noted. The mean marginal bone loss was 0.5\u2003mm (SD 0.47) after 5 years, followed by only minimal average changes during the following years. No radiographic parameter showed any time\u2010dependent relationship. The percentage of patients presenting at least one implant with more than 2.0\u2010mm bone loss was 4.9% in the interval from 0 to 5 years and 4.0% between 10 and 15 years. Only 1.3% of implants showed &gt;3.0\u2003mm accumulated bone loss after 15 years.<\/jats:p><jats:p><jats:bold>Conclusion\u2002<\/jats:bold> Implant treatment in the edentulous upper jaw functions well in a 15\u2010year time perspective, but an insignificant trend of higher implant failures was observed for patients lost to follow up. Besides wear and fractures of veneers, no other parameter showed any time\u2010related relationship, indicating an increased risk for more complications during later stages of follow up. However, accumulation of smaller amount of bone loss during the years resulted in an increasing number of implants and patients with bone levels below the third thread, which could be speculated to increase future maintenance after 15 years.<\/jats:p>","DOI":"10.1111\/j.1708-8208.2006.00003.x","type":"journal-article","created":{"date-parts":[[2006,6,15]],"date-time":"2006-06-15T11:14:59Z","timestamp":1150370099000},"page":"61-69","source":"Crossref","is-referenced-by-count":197,"title":["Implant Treatment in the Edentulous Maxillae: A 15\u2010Year Follow\u2010Up Study on 76 Consecutive Patients Provided with Fixed 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