ArticleInternational journal of implant dentistry2025
Primary implant stability of two implant macro-designs in different alveolar ridge morphologies: an in vitro study.
Article in International journal of implant dentistry, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Accuracy, Efficiency, and Patient- and Surgeon-Reported Outcomes of Static Versus Robotic Computer-Assisted Implant Surgery: A Randomized Clinical Trial.Clinical oral implants research · 2026Trial
- Posterior implant angulation without cantilever reduction in mandibular All-on-4: a controlled finite element analysis of stress transfer and implant macrodesign effects.BMC oral health · 2026Article
- Analysis of Primary Stability in Two Designs of Ultrashort Implants: In Vitro Study.Bioengineering (Basel, Switzerland) · 2026Article
- Clinical evaluation of early implant stability using resonance frequency analysis: a multicenter observational study.Frontiers in dental medicine · 2026Article
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Authors and funding
6 authors.
Funding
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Abstract
purposeThe primary aim of this in vitro study was to investigate the primary implant stability obtained in immediate and late implant placement scenarios. Secondary aims evaluated the effect of two distinct implant macro-designs and examined the correlation between resonance frequency analysis (RFA) and final insertion torque.
methodsPartially edentulous maxillary models including six single sites simulating extraction sockets and healed alveolar ridges were used. Virtual implant planning facilitated static computer-assisted implant placement of bone level implants with either a shallow-threaded and cylindrical (BL), or deep-threaded and tapered implant macro-design (BLX). The insertion torque was continuously measured during implant placement, and RFA was performed after final implant positioning.
resultsOne-hundred and forty-four implants were equally distributed to two alveolar ridge morphologies and implant designs. Higher final insertion torque and RFA values were observed for implants placed in healed ridges compared to extraction sockets (40.8 ± 13.5 vs. 20.6 ± 8.4 Ncm, and RFA 70.7 ± 2.8 vs. 59.6 ± 6.5, both p < 0.001), and for BL implants compared to BLX implants (35.7 ± 13.0 vs. 25.7 ± 8.9 Ncm, and RFA 66.7 ± 4.4 vs. 63.6 ± 4.9, both p < 0.001). Insertion torque and mean RFA values positively correlated (r = 0.742; p < 0.001).
conclusionPrimary implant stability is significantly affected by the alveolar ridge morphology and the implant macro-design, demonstrating higher values in healed sites and shallow-threaded, cylindrical implants. Therefore, a tailored selection of the implant design depending on the implant placement and loading protocol is recommended.
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