{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,13]],"date-time":"2026-02-13T18:39:18Z","timestamp":1771007958927,"version":"3.50.1"},"reference-count":18,"publisher":"Wiley","issue":"12","license":[{"start":{"date-parts":[[2015,3,24]],"date-time":"2015-03-24T00:00:00Z","timestamp":1427155200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Clinical Oral Implants Res"],"published-print":{"date-parts":[[2016,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>The aim of this study was to verify the reliability of a system for the fixed retention of complete maxillary prostheses supported by four implants with a follow\u2010up of 2\u00a0years.<\/jats:p><\/jats:sec><jats:sec><jats:title>Material and methods<\/jats:title><jats:p>Patients were treated between September 2009 and December 2010 with four Straumann Bone Level <jats:styled-content style=\"fixed-case\">SLA<\/jats:styled-content>ctive implants supporting a complete prosthesis (<jats:styled-content style=\"fixed-case\">CP<\/jats:styled-content>s). The two distal implants were positioned mesially to the maxillary sinus and with a mesio\u2010distal inclination \u2264 30\u00b0 in order to reduce the distal prosthesis cantilever. An immediate loading surgical protocol was used. The <jats:styled-content style=\"fixed-case\">CP<\/jats:styled-content>s were planned to be fixed to multibase abutments to test their retention for a fixed rehabilitation. Clinical and radiographic parameters as probing pocket depth (<jats:styled-content style=\"fixed-case\">PPD<\/jats:styled-content>), bleeding score (<jats:styled-content style=\"fixed-case\">mBI<\/jats:styled-content>), plaque index (<jats:styled-content style=\"fixed-case\">PI<\/jats:styled-content>), and marginal bone loss (<jats:styled-content style=\"fixed-case\">MBL<\/jats:styled-content>) were assessed at a 1\u2010 and 2\u2010year follow\u2010up visits. Moreover, any biological and prosthodontic maintenance events were recorded. Clinical and radiographic parameters changes were analyzed.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Twenty\u2010one patients treated with a total of 84 implants completed the 2\u2010year examination period. Four patients were lost to follow up. No technical complication was recorded. Also, no implant, reconstruction, or abutment failures were observed. Therefore, an implant and prosthetic survival rate of 100% were achieved after 2\u00a0years. The mean periodontal parameter scores after 2\u00a0years of function were 2.6\u00a0mm for <jats:styled-content style=\"fixed-case\">PPD<\/jats:styled-content> (<jats:styled-content style=\"fixed-case\">SD<\/jats:styled-content> 0.8\u00a0mm), 0.3 for <jats:styled-content style=\"fixed-case\">mBI<\/jats:styled-content> (<jats:styled-content style=\"fixed-case\">SD<\/jats:styled-content> 0.5\u00a0mm), and 1.2 for <jats:styled-content style=\"fixed-case\">PI<\/jats:styled-content> (<jats:styled-content style=\"fixed-case\">SD<\/jats:styled-content> 0.4\u00a0mm) indexes, respectively. In addition, the mean <jats:styled-content style=\"fixed-case\">MBL<\/jats:styled-content> score measured at the 2\u2010year follow\u2010up visit was \u22120.34\u00a0mm (<jats:styled-content style=\"fixed-case\">SD<\/jats:styled-content> of \u22120.45\u00a0mm). Furthermore, no peri\u2010implant soft tissue inflammation or peri\u2010implant infection was observed.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>It has been shown that immediate loading of four implants positioned anteriorly to the maxillary sinus could be a reliable treatment procedure to support fixed complete restorations.<\/jats:p><\/jats:sec>","DOI":"10.1111\/clr.12580","type":"journal-article","created":{"date-parts":[[2015,3,24]],"date-time":"2015-03-24T21:57:49Z","timestamp":1427234269000},"source":"Crossref","is-referenced-by-count":10,"title":["Simplified procedure for the immediate loading of a complete fixed prosthesis supported by four implants in the maxillary jaw: a 2\u2010year prospective study"],"prefix":"10.1111","volume":"27","author":[{"given":"Sergio","family":"Piano","sequence":"first","affiliation":[{"name":"Private practice Genova Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eugenio","family":"Romeo","sequence":"additional","affiliation":[{"name":"Department of Prosthodontics Dental Clinic School of Dentistry University of Milan Milan Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Luca","family":"Sbricoli","sequence":"additional","affiliation":[{"name":"Department of Oral Surgery Dental Clinic School of Dentistry University of Padova Padova Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gianluca","family":"Pisoni","sequence":"additional","affiliation":[{"name":"Department of Prosthodontics Dental Clinic School of Dentistry University of Milan Milan Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Niccol\u00f3","family":"Cea","sequence":"additional","affiliation":[{"name":"Department of Prosthodontics Dental Clinic School of Dentistry University of Milan Milan Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Diego","family":"Lops","sequence":"additional","affiliation":[{"name":"Department of Prosthodontics Dental Clinic School of Dentistry University of Milan Milan Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2015,3,24]]},"reference":[{"key":"e_1_2_6_2_1","first-page":"292","article-title":"Immediate fixed rehabilitation of the edentulous maxilla: a prospective clinical and radiological study after 3 years of loading","volume":"16","author":"Agliardi E.L.","year":"2014","journal-title":"Clinical Oral Implants 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