{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,29]],"date-time":"2026-08-29T06:33:43Z","timestamp":1787985223750,"version":"build-2784847793"},"reference-count":52,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2010,4,1]],"date-time":"2010-04-01T00:00:00Z","timestamp":1270080000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Periodontology"],"published-print":{"date-parts":[[2010,4]]},"abstract":"<jats:p><jats:bold>Background:<\/jats:bold> The dual acid\u2010etched (DAE) implant was commercially introduced in 1996 with a hybrid design incorporating a machined surface in the coronal region from approximately the third thread to the seating surface. This design was intended to reduce the risks of peri\u2010implantitis and other related soft tissue complications that were reported for implants with surface roughness in the coronal region. The objective of this prospective, randomized\u2010controlled clinical trial was to determine the incidence of peri\u2010implantitis for a fully etched implant with the DAE surface extending to the implant platform.<\/jats:p><jats:p><jats:bold>Methods:<\/jats:bold> Patients had implant sites randomly assigned to receive one hybrid control implant and at least one fully etched test implant in support of a short\u2010span fixed restoration to ensure that variables (e.g., demographics, jaw locations, and bone density) were consistent between groups. Prostheses were inserted 2 months after implant placement with follow\u2010up evaluations scheduled annually for 5 years to assess mucosal health based on bleeding on probing, suppuration, and probing depths. Evaluations also included radiographic and mobility assessments.<\/jats:p><jats:p><jats:bold>Results:<\/jats:bold> One hundred twelve patients who were enrolled at seven centers received 139 control and 165 test implants (total: 304 implants). With &gt;5 years of postloading evaluations, there was one declaration of peri\u2010implantitis associated with a control implant that was successfully treated later. Clinical probing and radiographic assessments did not reveal differences between groups in mucosal health outcomes or other signs of peri\u2010implantitis.<\/jats:p><jats:p><jats:bold>Conclusion:<\/jats:bold> Five\u2010year results of this randomized\u2010controlled study showed no increased risk of peri\u2010implantitis for fully etched implants compared to hybrid\u2010designed implants.<\/jats:p>","DOI":"10.1902\/jop.2009.090492","type":"journal-article","created":{"date-parts":[[2010,4,5]],"date-time":"2010-04-05T05:19:23Z","timestamp":1270444763000},"page":"493-501","source":"Crossref","is-referenced-by-count":83,"title":["A Prospective, Multicenter, Randomized\u2010Controlled 5\u2010Year Study of Hybrid and Fully Etched Implants for the Incidence of Peri\u2010Implantitis"],"prefix":"10.1002","volume":"81","author":[{"given":"Lars","family":"Zetterqvist","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sylvan","family":"Feldman","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bruce","family":"Rotter","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Giampaolo","family":"Vincenzi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jan L.","family":"Wennstr\u00f6m","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrea","family":"Chierico","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ren\u00e9e 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