{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,8]],"date-time":"2026-09-08T21:50:06Z","timestamp":1788904206771,"version":"build-2803163510"},"reference-count":24,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2025,12,30]],"date-time":"2025-12-30T00:00:00Z","timestamp":1767052800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"},{"start":{"date-parts":[[2025,12,30]],"date-time":"2025-12-30T00:00:00Z","timestamp":1767052800000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/100019954","name":"Ministerio de Educaci\u00f3n y Ciencias","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100019954","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Clinical Oral Implants Res"],"published-print":{"date-parts":[[2026,4]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>This study follows a 2\u2010year evaluation to verify marginal bone remodeling (MBR) trends associated with different abutment designs.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>A balanced, randomised, double\u2010blind clinical trial with two parallel experimental arms. 68 implants were placed in 9 men and 12 women, 48.5% using the straight abutment and 51.5% the concave abutment. The primary variable was peri\u2010implant tissue stability, measured by marginal bone loss (MBL) or gain (MBG) through digital radiology. Mixed linear regression models and Additive Generalized Additive Models were constructed to estimate MBR, simultaneously considering the variables abutment height, group, and time.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      At 24\u2009months, linear mixed\u2010effects regression models revealed that the concave abutment group exhibited significantly less MBL than the straight abutment group across mesial, distal, and average measurements (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.006\u20130.026). Significant interactions between abutment type and time at 8\u2009weeks and 6\u2009months suggest early and sustained benefits of the concave design. At 24\u2009months, this effect remained significant except in the mesial model (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.072). Abutment height was positively associated with MBL, particularly in the straight group; however, in the concave group, greater height mitigated bone loss (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&lt;\u20090.01).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Concave abutments demonstrated a potential advantage in reducing early marginal bone loss and promoting mid\u2010term bone stability compared to straight abutments. Their design may enhance soft tissue adaptation, contributing to improved peri\u2010implant bone preservation. While increased abutment height showed a protective effect in the concave group, these findings require confirmation. Further long\u2010term studies are warranted to validate these results and clarify their clinical relevance.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/clr.70085","type":"journal-article","created":{"date-parts":[[2025,12,30]],"date-time":"2025-12-30T08:31:41Z","timestamp":1767083501000},"page":"402-412","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Influence of Abutment Shape on Implant Marginal Bone Remodeling: A Double\u2010Blind, Randomized 24\u2010Month Clinical Study"],"prefix":"10.1111","volume":"37","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4094-0411","authenticated-orcid":false,"given":"Flavio","family":"Seijas Naya","sequence":"first","affiliation":[{"name":"Oral Medicine, Oral Surgery and Implantology Unit (MedOralRes), Faculty of Medicine and Dentistry Universidade de Santiago de Compostela  Santiago de Compostela Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1268-5361","authenticated-orcid":false,"given":"Juan C.","family":"Bernabeu Mira","sequence":"additional","affiliation":[{"name":"Surgery and Implant Dentistry, Oral Surgery Unit, Department of Stomatology, Faculty of Medicine and Dentistry University of Valencia  Valencia Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5174-8922","authenticated-orcid":false,"given":"Alba","family":"P\u00e9rez Jard\u00f3n","sequence":"additional","affiliation":[{"name":"Oral Medicine, Oral Surgery and Implantology Unit (MedOralRes), Faculty of Medicine and Dentistry Universidade de Santiago de Compostela  Santiago de Compostela Spain"},{"name":"Health Research Institute of Santiago de Compostela (IDIS)  Santiago de Compostela Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0306-8142","authenticated-orcid":false,"given":"Mercedes","family":"Conde Amboage","sequence":"additional","affiliation":[{"name":"CITMAga  Santiago de Compostela Spain"},{"name":"Department of Statistics Mathematical Analysis and Optimization, Models of Optimization, Decision, Statistics and Applications Reseach Group (MODESTYA), Universidade de Santiago de Compostela  Santiago de Compostela Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6670-9886","authenticated-orcid":false,"given":"David","family":"Pe\u00f1arrocha Oltra","sequence":"additional","affiliation":[{"name":"Surgery and Implant Dentistry, Oral Surgery Unit, Department of Stomatology, Faculty of Medicine and Dentistry University of Valencia  Valencia Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3739-1792","authenticated-orcid":false,"given":"Fabio","family":"Camacho Alonso","sequence":"additional","affiliation":[{"name":"Department of Oral Surgery University of Murcia  Murcia Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2196-9868","authenticated-orcid":false,"given":"Mario","family":"P\u00e9rez Say\u00e1ns","sequence":"additional","affiliation":[{"name":"Oral Medicine, Oral Surgery and Implantology Unit (MedOralRes), Faculty of Medicine and Dentistry Universidade de Santiago de Compostela  Santiago de Compostela Spain"},{"name":"Health Research Institute of Santiago de Compostela (IDIS)  Santiago de Compostela Spain"},{"name":"Materials Institute of Santiago de Compostela (IMATUS) Universidade de Santiago de Compostela  Santiago de Compostela A Coru\u00f1a 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