ArticleClinical oral implants research2026
The Effect of Crown Height and Retentive Height of Abutment on the Fracture Resistance of Fatigued Monolithic Zirconia Anterior Implant Crowns-An In Vitro Study.
Article in Clinical oral implants research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
What it found
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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.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
1 citing paper in PubMed.
- Static and fatigue behavior of one- and two-piece zirconia implant abutment systems: an in vitro study.Clinical oral investigations · 2026Article
Corrections and comments
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Authors and funding
6 authors.
Funding
Abstract
objectivesThis laboratory study investigated the effect of two different retentive heights of Ti-base abutments (3.5 and 5.5 mm) and crown heights (13 and 16 mm) on the load at failure and survival of monolithic zirconia implant-supported crowns replacing a maxillary central incisor. MATERIALS AND
methodForty implant-supported crowns were divided into four groups (n = 10 each): short crown/long abutment (SCLA), short crown/short abutment (SCSA), long crown/long abutment (LCLA), and long crown/short abutment (LCSA). Specimens underwent thermal cycling and incremental mechanical cyclic loading starting at 450 N increasing by 50 N until failure. Load and cycles at failure, Weibull analysis, mode of failure, and fractographic assessments were performed.
resultsMean load at failure was highest for the SCSA group (536.9 N ± 78.4 N), then SCLA (493.4 ± 53.2 N) and LCLA (491.3 ± 40.7 N), and lowest for the LCSA group (453.7 N ± 2.8 N). The differences were statistically significant (p = 0.035). Cycles at failure showed significant differences among groups (p < 0.001), with SCSA demonstrating the greatest cycles at failure (72,492 ± 44,551 cycles), then SCLA (43,630 ± 27,579 cycles) and LCLA (37,706 ± 18,826 cycles), and LCSA the lowest (8399 ± 7308 cycles). Short crowns showed abutment/screw fractures, while longer crowns had more crown fractures.
conclusionCrown height significantly influenced load at failure and survival, with shorter crowns performing better. The retentive height of the Ti-base abutment had less impact; however, shorter abutments provided better mechanical performance when paired with shorter crowns, suggesting careful consideration for anterior restorations.
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