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Related Experiment Videos

Bicortically stabilized implant load transfer.

Chang Mo Jeong1, Angelo A Caputo, Robert S Wylie

  • 1Department of Prosthodontics, School of Dentistry, Pusan National University, Pusan, Korea.

The International Journal of Oral & Maxillofacial Implants
|March 1, 2003
PubMed
Summary

Engaging the lingual cortical plate in mandibular implants reduced crestal bone stress by 25%. However, this study found no clear load transfer advantage for bicortical stabilization in this model.

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Area of Science:

  • Biomaterials Science
  • Biomechanics
  • Dental Implantology

Background:

  • Mandibular implant stabilization is crucial for load transfer.
  • The role of bicortical stabilization, specifically lingual cortical plate engagement, remains debated.
  • Understanding stress distribution is key to optimizing implant success.

Purpose of the Study:

  • To photoelastically investigate the impact of lingual cortical plate engagement on mandibular implant load transfer.
  • To compare stress distribution between implants engaging the lingual plate and those centrally placed in trabecular bone.
  • To evaluate the influence of peri-implant defects and cantilever lengths on load transfer.

Main Methods:

  • Fabrication of photoelastic models simulating mandibular bone.

Related Experiment Videos

  • Placement of threaded implants with and without lingual cortical plate engagement.
  • Application of simulated occlusal loads and measurement of stress distribution.
  • Repetition of loading procedures with induced peri-implant defects.

    • Main Results:

    • Lingual plate engagement generated high stresses at the lingual plate and buccal crest.
    • Stress at the buccal implant neck was lower with lingual plate engagement compared to central placement.
    • Trabecular bone bore more load in the presence of peri-implant defects.
    • Increased buccal cantilever lengths led to asymmetric load transfer and higher stresses.

    Conclusions:

    • Crestal cortical bone significantly supported implant loads in both configurations.
    • Lingual cortical plate engagement reduced crestal bone stress by approximately 25%.
    • Peri-implant defects shifted primary support to the trabecular bone simulant.
    • The study did not demonstrate a definitive load transfer advantage for apical lingual cortical plate engagement.