{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,3]],"date-time":"2026-08-03T19:02:32Z","timestamp":1785783752879,"version":"3.56.0"},"reference-count":38,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2023,6,21]],"date-time":"2023-06-21T00:00:00Z","timestamp":1687305600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Clinical Oral Implants Res"],"published-print":{"date-parts":[[2023,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objectives<\/jats:title><jats:p>The aim of the present human observational study is to provide morphologic and morphometric analysis of peri\u2010implant connective tissue next to abutments with divergent or convergent macro\u2010geometry and different surface micro\u2010characteristics.<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and Methods<\/jats:title><jats:p>Thirty patients were rehabilitated with single implants in the posterior area and one out of three different healing abutments with a one\u2010stage technique: machined divergent abutment (DIV\u2010MAC), machined convergent abutment (CONV\u2010MAC) or convergent abutment with ultrathin threaded surface (CONV\u2010UTM). At 3\u2009months postimplant insertion, peri\u2010implant soft tissue was harvested; the following outcomes were investigated: histomorphometry (vertical width of connective and epithelial components) as detected by histology and polarized light; and connective tissue vertical width and 3D organization as detected by synchrotron\u2010based high\u2010resolution phase\u2010contrast\u2010based tomography (PhC\u2010\u03bcCT).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Significant differences in connective tissue vertical dimension (aJE\u2010AM) were found between DIV\u2010MAC and both CONV\u2010MAC and CONV\u2010UTM, both by histology and PhC\u2010\u03bcCT, with significantly higher values for the last two groups. Moreover, 2D histological analysis did not find significant differences in the junctional epithelium vertical dimension (PM\u2010aJE). Importantly, PhC\u2010\u03bcCT analysis revealed, at 3D level, significant greater amount and density of collagen bundles for CONV\u2010UTM compared with the other two groups.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Convergent abutment profiles, regardless of their surface micro\u2010geometry, seem to favor axial development of peri\u2010implant connective tissue. Moreover, ultrathin threaded surfaces seem associated with denser and greater connective tissue organization, which might improve peri\u2010implant soft tissue seal.<\/jats:p><\/jats:sec>","DOI":"10.1111\/clr.14118","type":"journal-article","created":{"date-parts":[[2023,6,24]],"date-time":"2023-06-24T10:39:35Z","timestamp":1687603175000},"page":"920-933","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":17,"title":["Influence of abutment macro\u2010 and micro\u2010geometry on morphologic and morphometric features of peri\u2010implant connective tissue"],"prefix":"10.1111","volume":"34","author":[{"given":"Luigi","family":"Canullo","sequence":"first","affiliation":[{"name":"Unit of Prosthodontics and Implant Prosthodontics, Department of Surgical Sciences (DISC) University of Genova  Genova Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alessandra","family":"Giuliani","sequence":"additional","affiliation":[{"name":"Section BBF, Department of Clinical Sciences (DiSCO) Polytechnic University of Marche  Ancona Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9261-2682","authenticated-orcid":false,"given":"Michele","family":"Furlani","sequence":"additional","affiliation":[{"name":"Section BBF, Department of Clinical Sciences (DiSCO) Polytechnic University of Marche  Ancona Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Maria","family":"Menini","sequence":"additional","affiliation":[{"name":"Unit of Prosthodontics and Implant Prosthodontics, Department of Surgical Sciences (DISC) University of Genova  Genova Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Adriano","family":"Piattelli","sequence":"additional","affiliation":[{"name":"Dental School University of Belgrade  Belgrade Serbia"},{"name":"School of Dentistry Saint Camillus International University of Health and Medical Sciences  Rome Italy"},{"name":"Fondazione Villa Serena per la Ricerca  Citt\u00e0 Sant'Angelo Italy"},{"name":"Casa di Cura Villa Serena del Dott. 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