Longevity factors for short and extra-short implants: An eight-year retrospective observational clinical study.

Med Oral Patol Oral Cir Bucal · 2026 · PMC12981673 · PMID 41273745

Europe PMC DOI

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highly significantno p-value reported

G2, yielded a highly significant result (p<0.0001), with G1 losing 5 times more bone (4.32 vs. 0.87mm2); the effect size (d=1.76) was very large, confirming that an abutment height of 2mm is critical.

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did not reach statistical significancep=0.087so close (0.05 < p ≤ 0.1)

showed a trendno p-value reported

Implants in the posterior maxilla showed a trend towards higher bone loss (0.55±1.02mm) compared to the anterior mandible reference, though this difference did not reach statistical significance (p=0.087).

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.