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Balmer, M; Payer, M; Steinwender, A; Herber, V; Jung, RE; Kühl, S.
One-Year Analysis of Clinical and Radiological Outcomes of Two-Piece Zirconia Compared to Titanium Implants: A Multicenter Prospective Randomized Clinical Trial
CLIN ORAL IMPLAN RES. 2026; PMID 9105713
Doi: 10.1111/clr.70094
Web of Science
PubMed
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FullText_MUG
- Co-authors Med Uni Graz
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Herber Valentin
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Kühl Sebastian
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Payer Michael
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- Abstract:
- Objectives: To evaluate the clinical performance of two-piece zirconia implants with screw-retained abutments compared to titanium implants after 1 year of loading. Materials and Methods: In this multicenter, prospective, randomized clinical trial, 61 two-piece zirconia and 61 titanium implants were placed and restored with single crowns. Evaluations were performed at implant placement, crown delivery, and 1-year post-loading. Peri-implant Marginal Bone Loss (MBL), survival rate, early wound healing index, and soft tissue parameters were assessed. Intergroup comparisons of continuous outcomes were performed using Linear Mixed-Effects Models accounting for center and potential confounders. Categorical variables were analyzed using the chi-square or Fisher's exact test. Survival was analyzed using Kaplan-Meier estimates. Significance was set at p < 0.05. Results: No significant differences were found between the two implant types. Mean MBL from implantation to crown insertion was 1.10 +/- 0.78 mm for titanium and 0.94 +/- 0.67 mm for zirconia implants. No significant additional bone loss occurred over the subsequent year, with changes of 0.07 +/- 0.55 mm and 0.08 +/- 0.51 mm for titanium and zirconia, respectively. After 1 year, zirconia implants showed a 100% survival rate, while titanium implants showed 96.5% with two failures. At 1 year, differences in probing depths, plaque accumulation, and Papilla Bleeding Index were not statistically significant. Conclusion: After 1 year of loading, no statistically significant differences in MBL, implant survival, or peri-implant health were found between zirconia and titanium implants, indicating no clinical superiority. Zirconia implants may therefore be considered a viable alternative in single-tooth implant restorations.
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bone loss
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ceramic
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dental implants
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implant survival
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titanium implants
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two-piece implants
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zirconia implants