Self-glazed zirconia Abutments Show Superior Fit Over Conventional Zirconia Abutments, finds study
Researchers have found in a new study that Self-glazed zirconia abutments exhibit better adaptation than conventional milled zirconia abutments at both the Ti base-abutment and implant-abutment interfaces. Additionally, the fit of one-piece Self-glazed zirconia abutments is comparable to that of prefabricated Ti-base abutments, indicating their clinical viability.
Self-glazed zirconia (SGZ), produced using a novel additive 3D gel deposition technology, has recently been employed to fabricate zirconia abutments.
This in vitro study aimed to evaluate the adaptation of one-piece and two-piece all-ceramic SGZ implant abutments in comparison to conventional milled zirconia abutments. One-piece zirconia abutments and two-piece Ti-base zirconia abutments, sharing an identical 3D design, were fabricated using self-glazed zirconia via 3D gel deposition and conventional zirconia via milling, forming four groups: SGZ-A, SGZ-Ti, Lava-A, and Lava-Ti. Marginal gaps between the zirconia abutments and Ti-base were evaluated using micro-CT data, while gaps between the abutments and implant analogs were assessed on specimen cross-sections by using a stereomicroscope. Statistical analyses were conducted using the non-parametric Mann-Whitney U and Kruskal-Wallis tests with α set at 0.05.
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