ArticleOral and maxillofacial surgery2026
Clinical outcomes of post-extractive tissue-level implants with transmucosal zirconia collar: a prospective cohort study.
Article in Oral and maxillofacial surgery, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundImmediate implant placement and restoration shorten treatment time and help preserve alveolar structures, but achieving stable peri-implant tissues remains challenging. Titanium–zirconia hybrid tissue-level implants are designed to combine the osseointegration properties of titanium with the soft tissue advantages of zirconia. This prospective study evaluated survival, peri-implant bone stability, esthetic outcomes, and patient satisfaction of zirconia-collar implants placed immediately into extraction sockets and, when feasible, immediately restored.
methodsTwenty-seven patients received 58 implants immediately after extraction; 37% were immediately provisionalized. Clinical and radiographic evaluations were conducted over a mean follow-up of 4 years. Outcome measures included implant and prosthesis survival and success, marginal bone level (MBL) changes, Pink Esthetic Score (PES), biological and mechanical complications, and patient-reported satisfaction.
resultsImplant and prosthesis survival and success were 100%, with no biological or mechanical complications. Immediate provisionalization resulted in significantly lower MBL changes (p = 0.004) and greater socket diameter preservation (p < 0.001) compared with conventional loading. However, immediate provisionalization was not randomly allocated, thus, the observed differences likely reflect a more favorable biological baseline rather than a direct effect of the loading protocol. The mean PES was 12.7 ± 1.65, with highest scores for gingival level and alveolar process, and slightly lower scores for papillae. Patient satisfaction was uniformly high.
conclusionsWithin the limits of the present study, in this cohort, titanium–zirconia hybrid implants demonstrated excellent survival, stable peri-implant bone levels, favorable esthetic outcomes, and high patient satisfaction.
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