{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,26]],"date-time":"2026-10-26T06:37:28Z","timestamp":1792996648955,"version":"4.5.0"},"reference-count":18,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2007,1,24]],"date-time":"2007-01-24T00:00:00Z","timestamp":1169596800000},"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":[[2007,4]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p><jats:bold>Objectives: <\/jats:bold> To compare the clinical outcomes of standard, cylindrical, screw\u2010shaped to novel tapered, transmucosal (Straumann Dental<jats:sup>\u00ae<\/jats:sup>) implants immediately placed into extraction sockets.<\/jats:p><jats:p><jats:bold>Material and methods: <\/jats:bold> In this randomized\u2010controlled clinical trial, outcomes were evaluated over a 3\u2010year observation period. This report deals with the need for bone augmentation, healing events, implant stability and patient\u2010centred outcomes up to 3 months only. Nine centres contributed a total of 208 immediate implant placements. All surgical and post\u2010surgical procedures and the evaluation parameters were discussed with representatives of all centres during a calibration meeting. Following careful luxation of the designated tooth, allocation of the devices was randomly performed by a central study registrar. The allocated SLA titanium implant was installed at the bottom or in the palatal wall of the extraction socket until primary stability was reached. If the extraction socket was \u22651\u2003mm larger than the implant, guided bone regeneration was performed simultaneously (Bio Oss<jats:sup>\u00ae<\/jats:sup> and BioGide<jats:sup>\u00ae<\/jats:sup>). The flaps were then sutured. During non\u2010submerged transmucosal healing, everything was done to prevent infection. At surgery, the need for augmentation and the degree of wound closure was verified. Implant stability was assessed clinically and by means of resonance frequency analysis (RFA) at surgery and after 3 months. Wound healing was evaluated after 1, 2, 6 and 12 weeks post\u2010operatively.<\/jats:p><jats:p><jats:bold>Results: <\/jats:bold> The demographic data did not show any differences between the patients receiving either standard cylindrical or tapered implants. All implants yielded uneventful healing with 15% wound dehiscences after 1 week. After 2 weeks, 93%, after 6 weeks 96%, and after 12 weeks 100% of the flaps were closed. Ninety percent of both implant designs required bone augmentation. Immediately after implantation, RFA values were 55.8 and 56.7 and at 3 months 59.4 and 61.1 for cylindrical and tapered implants, respectively. Patient\u2010centred outcomes did not differ between the two implant designs. However, a clear preference of the surgeon's perception for the appropriateness of the novel\u2010tapered implant was evident.<\/jats:p><jats:p><jats:bold>Conclusions: <\/jats:bold> This RCT has demonstrated that tapered or standard cylindrical implants yielded clinically equivalent short\u2010term outcomes after immediate implant placement into the extraction socket.<\/jats:p>","DOI":"10.1111\/j.1600-0501.2006.01371.x","type":"journal-article","created":{"date-parts":[[2007,1,24]],"date-time":"2007-01-24T13:16:15Z","timestamp":1169644575000},"page":"188-196","source":"Crossref","is-referenced-by-count":97,"title":["Immediate implant placement with transmucosal healing in areas of aesthetic priority: A multicentre randomized\u2010controlled clinical trial I. Surgical outcomes"],"prefix":"10.1111","volume":"18","author":[{"given":"Niklaus P.","family":"Lang","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Maurizio S.","family":"Tonetti","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jean E.","family":"Suvan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jean","family":"Pierre Bernard","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Daniele","family":"Botticelli","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ioannis","family":"Fourmousis","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marlene","family":"Hallund","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ronald","family":"Jung","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lars","family":"Laurell","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Giovanni E.","family":"Salvi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"David","family":"Shafer","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hans\u2010Peter","family":"Weber","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"name":"on Behalf of European Research Group on Periodontology (ERGOPerio)","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2007,1,24]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600-051X.2005.00642.x"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600-051X.2005.00726.x"},{"key":"e_1_2_7_4_1","first-page":"376","article-title":"Guided tissue regeneration for implants placed into extraction sockets and for implant 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