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Related Experiment Video

Updated: Jan 25, 2026

Testing of all Six Semicircular Canals with Video Head Impulse Test Systems
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Different Materials for Plugging a Dehiscent Superior Semicircular Canal: A Comparative Histologic Study Using a

Pingling Kwok1, Otto Gleich1, Thilo Spruss2

  • 1ENT-Department.

Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [And] European Academy of Otology and Neurotology
|May 15, 2019
PubMed
Summary

Teflon or autologous bone are superior materials for plugging superior semicircular canal dehiscence, offering successful symptom relief with fewer adverse reactions than bone wax, muscle, or fat.

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Area of Science:

  • Otolaryngology
  • Neurosurgery
  • Biomaterials Science

Background:

  • Superior semicircular canal dehiscence causes symptoms like hearing loss and vertigo.
  • Surgical plugging is effective but can cause hearing loss (≥25%) and adverse effects.
  • Bone wax may cause more adverse effects compared to other plugging materials.

Purpose of the Study:

  • To compare tissue reactions to various plugging materials for superior semicircular canal dehiscence.
  • To identify the optimal material for successful plugging with minimal adverse effects.

Main Methods:

  • The study utilized a gerbil model to assess tissue reactions.
  • Materials tested included autologous bone pate/chips, muscle, fat, artificial bone wax, and Teflon.
  • Success rates and adverse tissue reactions were evaluated for each material.

Main Results:

  • Bone pate/chips, Teflon, and bone wax achieved 100% successful plugging.
  • Muscle and fat resulted in significantly lower success rates (<50%).
  • Bone wax showed significantly more adverse tissue reactions compared to Teflon and bone pate/chips.

Conclusions:

  • Teflon and autologous bone are favored materials for superior semicircular canal dehiscence plugging.
  • These materials offer better outcomes than bone wax, muscle, or fat.
  • This finding aids in selecting materials to improve surgical success and patient safety.