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Does implant design affect primary stability in extraction sites?

Matthias Karl, Ainara Irastorza-Landa

    Quintessence International (Berlin, Germany : 1985)
    |February 8, 2017
    PubMed
    Summary
    This summary is machine-generated.

    Dental implant design significantly impacts primary stability. The Nobel Active implant demonstrated superior insertion torque and stability quotient compared to Straumann Bone Level Tapered and Astra OsseoSpeed EV in a simulated extraction model.

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    Area of Science:

    • Dental Implantology
    • Biomaterials Science
    • Prosthodontics

    Background:

    • Immediate implant placement offers treatment efficiency and preserves oral structures.
    • Various bone-level implant designs exist, necessitating comparative analysis.
    • Achieving primary implant stability is crucial for successful osseointegration.

    Purpose of the Study:

    • To compare the primary stability of three different bone-level implant designs in a simulated extraction socket model.
    • To evaluate implant insertion torque (IT) and implant stability quotient (ISQ) as measures of primary stability.
    • To assess the influence of implant design on stability in challenging bone conditions.

    Main Methods:

    • A polyurethane foam sandwich model with a cortical layer simulated a standardized extraction socket.
    • Three implant systems were tested: OsseoSpeed EV (Astra), Straumann Bone Level Tapered (BLT), and Nobel Active (NA).
    • Implant stability was measured using insertion torque (IT) and implant stability quotient (ISQ), with statistical analysis including t-tests and Bonferroni correction.

    Main Results:

    • Nobel Active (NA) implants exhibited significantly higher insertion torque (IT) compared to BLT and Astra implants (P < .001).
    • NA implants also showed the highest ISQ values, significantly higher than BLT (P < .001) and comparable to Astra (P = .07).
    • BLT implants demonstrated significantly lower ISQ values than both NA and Astra implants (P < .001). No correlation was found between IT and ISQ.

    Conclusions:

    • The developed in-vitro model provides consistent and clinically relevant measurements of implant stability.
    • Implant design is a significant factor in achieving primary stability, particularly in challenging clinical scenarios.
    • Further research should investigate implant performance under dynamic loading conditions.