ArticleBioinformation2026
Marginal fit of titanium and zirconia abutments: Micro-CT analysis.
Article in Bioinformation, 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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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The lack of high-resolution three-dimensional evidence comparing marginal fit and biological sealing between CAD/CAM titanium and zirconia abutments manufactured under identical digital workflows remains a critical gap in implant prosthodontics. Digital workflows enhance implant prosthodontic precision, yet differences in marginal fit between CAD/CAM titanium and zirconia abutments are unclear. Therefore, it is of interest to assess marginal adaptation, internal fit and bacterial microleakage of 60 digitally fabricated abutments using micro-CT and bacterial infiltration tests. Titanium abutments showed smaller marginal gaps (12.4 ± 3.8 µm) and higher internal contact (73.2 ± 8.4%) than zirconia (23.7 ± 6.2 µm; 58.9 ± 11.7%) (p < 0.001). Bacterial leakage was lower in titanium (13.3%) compared to zirconia (43.3%) (P < 0.05). Thus, CAD/CAM titanium abutments demonstrated superior marginal fit, internal adaptation and microbial sealing.
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