{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,12]],"date-time":"2026-06-12T11:22:24Z","timestamp":1781263344638,"version":"3.54.1"},"reference-count":25,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2013,3,4]],"date-time":"2013-03-04T00:00:00Z","timestamp":1362355200000},"content-version":"vor","delay-in-days":0,"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":[[2014,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>The aim of this trial was to assess if the nonremoval of abutments placed at the time of surgery would improve bone and gingival healing around single immediately restored implants placed in postextraction sockets.<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and Methods<\/jats:title><jats:p>All patients received a single square\u2010threaded tapered implant placed in postextraction sockets and immediately restored. All the implants were placed 2.0\u2009mm below the bone crest, avoiding any contact with the coronal portion of the buccal wall. Six months after surgery, 35 patients were treated following the control standard prosthetic protocol: the abutments were removed and impressions were made directly on the implant platform. Thirty\u2010three patients underwent the \u201cone abutment at one time\u201d test protocol: impressions were made of the abutments using snap\u2010on abutment copies. The dimensional changes of the soft and hard tissues were assessed using digital photography and cone beam computed tomography radiographs immediately after surgery and at 6\u2010, 12\u2010, and 24\u2010month follow\u2010up examinations.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>All implants were osseointegrated and clinically stable at the follow\u2010up examinations. No statistically significant difference was evidenced between the two groups regarding the measurement of vertical bone healing. After the placement of the final restoration, a significant horizontal loss in the hard tissue portion over the implant platform was assessed (<jats:italic>p<\/jats:italic>\u2009=\u2009.03 mesial sites; <jats:italic>p<\/jats:italic>\u2009=\u2009.04 distal sites). An 87% increase of the mean recession of the buccal soft tissue was observed in the control group (+0.27\u2009mm) in the same time frame.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The nonremoval of abutments placed at the time of the surgery improves the stability of healed soft and hard tissues around the immediately restored, subcrestally placed tapered single maxillary implant.<\/jats:p><\/jats:sec>","DOI":"10.1111\/cid.12051","type":"journal-article","created":{"date-parts":[[2013,3,5]],"date-time":"2013-03-05T08:05:52Z","timestamp":1362470752000},"page":"794-805","source":"Crossref","is-referenced-by-count":46,"title":["Nonremoval of Immediate Abutments in Cases Involving Subcrestally Placed Postextractive Tapered Single Implants: A Randomized Controlled Clinical Study"],"prefix":"10.1111","volume":"16","author":[{"given":"Marco","family":"Degidi","sequence":"first","affiliation":[{"name":"Private practice  Bologna Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Diego","family":"Nardi","sequence":"additional","affiliation":[{"name":"private practice  Bologna Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Giuseppe","family":"Daprile","sequence":"additional","affiliation":[{"name":"private practice  Bologna Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Adriano","family":"Piattelli","sequence":"additional","affiliation":[{"name":"Department of Medical, Oral, and Biotechnological Sciences University of Chieti\u2010Pescara  Chieti Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2013,3,4]]},"reference":[{"key":"e_1_2_7_2_1","first-page":"26","article-title":"Consensus statements and recommended clinical procedures regarding the placement of implants in extraction sockets","volume":"19","author":"Hammerle CH","year":"2004","journal-title":"Int J Oral Maxillofac Implants"},{"key":"e_1_2_7_3_1","first-page":"332","article-title":"Immediate implant placement into extraction sites: surgical and restorative advantages","volume":"9","author":"Lazzara RJ","year":"1989","journal-title":"Int J Periodontics Restorative Dent"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600-051X.2006.00907.x"},{"key":"e_1_2_7_5_1","first-page":"941","article-title":"Effects of implant design and surface roughness on crestal bone and soft tissue levels in the esthetic zone","volume":"26","author":"Stein AE","year":"2009","journal-title":"Int J Oral Maxillofac Implants"},{"key":"e_1_2_7_6_1","first-page":"910","article-title":"Influence of microgap location and configuration on radiographic bone loss around submerged implants: an experimental study in dogs","volume":"24","author":"Weng D","year":"2011","journal-title":"Int J Oral Maxillofac Implants"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600-0501.2010.02111.x"},{"key":"e_1_2_7_8_1","unstructured":"National Council on Radiation Protection and Measurements.Implementation of the principle of as low as reasonably achievable (ALARA) for medical and dental personnel NCRP report no. 107. 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