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Related Experiment Videos

Dentinal tubule occlusion and root hypersensitivity.

D G Kerns1, M J Scheidt, D H Pashley

  • 1U.S. Army, Ft. Gordon, GA.

Journal of Periodontology
|July 1, 1991
PubMed
Summary

Clinical procedures for root sensitivity, like scaling and root planing or potassium oxalate, offer only temporary occlusion of open dentinal tubules. Natural tubule closure may provide longer-lasting relief from tooth sensitivity.

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Area of Science:

  • Dentistry
  • Biomaterials Science
  • Oral Biology

Background:

  • Root sensitivity is often caused by exposed dentinal tubules.
  • Effective management of dentin hypersensitivity is crucial for patient comfort.

Purpose of the Study:

  • To longitudinally assess the effectiveness of clinical procedures in occluding dentinal tubules.
  • To compare the tubule occlusion efficacy of scaling and root planing versus potassium oxalate application.

Main Methods:

  • A novel in vivo model using removable dentures to evaluate dentin samples.
  • Scanning electron microscopy (SEM) analysis of dentinal surfaces at baseline and 7 days.
  • Evaluation of EDTA-etched control samples over 4 weeks.

Main Results:

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  • Smear layers and oxalate crystals initially occluded tubules, but tubules reopened by 7 days post-scaling and root planing.
  • Potassium oxalate treatment also showed limited duration, with tubules reopening by 7 days.
  • EDTA etching reduced tubule diameter but did not significantly alter tubule number by 4 weeks.

Conclusions:

  • Smear layer creation and potassium oxalate application provide short-term occlusion of dentinal tubules.
  • These interventions may offer temporary relief from dentin hypersensitivity.
  • Natural tubule occlusion may be a more sustainable solution for managing root sensitivity.