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Related Experiment Videos

[Risk factors for three-unit bonded bridges].

C Paszyna, J Mau, T Kerschbaum

    Deutsche Zahnarztliche Zeitschrift
    |May 1, 1989
    PubMed
    Summary

    This study analyzed factors affecting the longevity of 3-unit adhesive bridges, finding that abutment mobility and preparation significantly impact retention. Extensive preparation and improved retainers enhance bridge survival.

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    Longevity of 2328 chairside Cerec inlays and onlays.

    International journal of computerized dentistry·2003

    Area of Science:

    • Dental materials science
    • Biomaterials engineering
    • Clinical dentistry

    Context:

    • Adhesive bridges are common dental restorations.
    • Understanding factors influencing their longevity is crucial for clinical success.
    • Survival analysis provides a robust statistical framework for this investigation.

    Purpose:

    • To investigate the effects of anatomical factors and clinical procedures on the survival time of 3-unit adhesive bridges.
    • To identify significant variables influencing the loss of retention.
    • To evaluate the impact of abutment characteristics and preparation methods.

    Summary:

    • Survival analysis was used to assess the "life-time" of 3-unit adhesive bridges, focusing on the first loss of retention.
    • Significant variables identified include therapist effect, increased abutment mobility, and macromechanical preparation.
    • Bridges with one non-mobile and one hypermobile abutment were particularly at risk.
    • Extensive macromechanical preparation of abutment teeth significantly reduced debonding hazards.

    Impact:

    • Findings highlight the importance of abutment tooth mobility and preparation in adhesive bridge success.
    • Suggests that improved retentive mechanisms can compensate for less extensive preparation.
    • Provides valuable data for clinicians to optimize treatment planning and enhance restoration longevity.

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