{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,22]],"date-time":"2026-04-22T04:12:44Z","timestamp":1776831164416,"version":"3.51.2"},"reference-count":29,"publisher":"Wiley","issue":"12","license":[{"start":{"date-parts":[[2014,9,5]],"date-time":"2014-09-05T00:00:00Z","timestamp":1409875200000},"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":[[2015,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Aim<\/jats:title><jats:p>Aim of this study was to verify if the type of implant abutment manufacturing, stock or cad\u2010cam, could influence the maintenance of stable gingival margins around single restorations in anterior areas.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>After 16\u00a0weeks of healing, implants (Osseospeed, Astra Tech Dental Implant) were positioned. Depending on the different fixture inclination and the thickness of buccal peri\u2010implant soft tissue, abutment selection resulted in four groups: Group 1 (patients with zirconia ZirDesign<jats:sup>\u00ae<\/jats:sup> stock abutments), Group 2 (titanium stock TiDesign<jats:sup>\u00ae<\/jats:sup> abutments), Group 3 (zirconia cad\u2010cam abutments), and Group 4 (titanium cad\u2010cam abutments). The following parameters were assessed: buccal gingival margin modification (<jats:styled-content style=\"fixed-case\">BGM<\/jats:styled-content>). The modification of the implant gingival margin was followed at 1 and 2\u00a0years of follow\u2010up. A computerized analysis was performed for measurements. Differences between soft tissue margin at baseline and after 2\u00a0years measured the gingival margin recession. A general linear model was used to evaluate each group in relation to gingival recession after two years. Tukey's <jats:italic>post hoc<\/jats:italic> test was used to compare the mean <jats:styled-content style=\"fixed-case\">REC<\/jats:styled-content> indexes of each group of abutments.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Seventy\u2010two healthy patients (39 males and 33 females; mean age of 46\u00a0years) scheduled for single gap rehabilitation in anterior areas were enrolled. A 100% of implant survival rate was observed after 24\u00a0months of function. One failure occurred due to fracture of a Zirconia cad\u2010cam abutment. Moreover, two abutment screw unscrewing were observed. Both for zirconia and titanium stock abutments (Group 1 and 2), the mean recession of implant buccal soft tissue was of 0.3\u00a0mm (<jats:styled-content style=\"fixed-case\">SD<\/jats:styled-content> of 0.3 and 0.4\u00a0mm, respectively). Soft tissue mean recession of zirconia and titanium cad\u2010cam abutments (Group 3 and 4) was of 0.1 and \u22120.3\u00a0mm, respectively (<jats:styled-content style=\"fixed-case\">SD<\/jats:styled-content> of 0.3 and 0.4\u00a0mm, respectively). <jats:styled-content style=\"fixed-case\">REC<\/jats:styled-content> values of cad\u2010cam titanium abutments (Group 4) were significantly lower than that of Group 1 (\u22120.57\u00a0mm), Group 2 (\u22120.61\u00a0mm), and Group 3 (\u22120.40\u00a0mm), respectively (Table <jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"#clr12479-tbl-0004\"\/>).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>In the anterior area, the use of cad\u2010cam abutments is related to a better soft tissue stability. Such a relationship is significant if cad\u2010cam titanium abutments are compared to both titanium and zirconia stock abutments.<\/jats:p><\/jats:sec>","DOI":"10.1111\/clr.12479","type":"journal-article","created":{"date-parts":[[2014,9,5]],"date-time":"2014-09-05T07:04:01Z","timestamp":1409900641000},"page":"1436-1442","source":"Crossref","is-referenced-by-count":39,"title":["Soft tissues stability of cad\u2010cam and stock abutments in anterior regions: 2\u2010year prospective multicentric cohort study"],"prefix":"10.1111","volume":"26","author":[{"given":"Diego","family":"Lops","sequence":"first","affiliation":[{"name":"Department of Prosthodontics Dental Clinic School of Dentistry University of Milan Milan Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eriberto","family":"Bressan","sequence":"additional","affiliation":[{"name":"Department of Periodontology School of Dentistry University of Padova Padova Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Andrea","family":"Parpaiola","sequence":"additional","affiliation":[{"name":"Department of Prosthetic Dentistry School of Dentistry University of Padova Padova Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Luca","family":"Sbricoli","sequence":"additional","affiliation":[{"name":"Department of Periodontology School of Dentistry University of Padova Padova Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Denis","family":"Cecchinato","sequence":"additional","affiliation":[{"name":"FRANCI Insitute Padova 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 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