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Kim, Lim, and Chung: A SEM study of dentinal tubule sealing effect of desensitizing agent applicated after root planning
Original Article

The Journal of the Korean Academy of Periodontology 2002; 32(3): 655-664.

Published online: 30 September 2002

DOI: https://doi.org/10.5051/jkape.2002.32.3.655

A SEM study of dentinal tubule sealing effect of desensitizing agent applicated after root planning

Nam-Kyun Kim, Sung-Bin Lim, Chin-Hyung Chung

Department of Periodontology, College of Dentistry, Dan-Kook University, Korea.

Copyright © 2002 Korean Academy of Periodontology

Abstract

The purpose of this study was to observe the degree of surface obliteration of dentinal tubule using Gluma® desensitizer and MS coat® with 15 specimens made out of 15 extracted lower incisors. They were divided into Root planning group(control), Gluma® desensitizer group(testI) and MS coat® group(testII).
Degree of obliteration was examined under the scanning electron microscope(×2000).
The following results were obtained :

  1. In the root planning group(control), the complete open of dentinal tubule surface was accounted for 73.8%, the partial obliteration for 17.2% and the complete obliteration for 9.0%.

  2. In the Gluma® desensitizer group (test I), the complete open of dentinal tubule surface was accounted for 23.6%, the partial obliteration for 42.8% and the complete obliteration for 33.6%.

  3. In the MS coat® group (test II), the complete open of dentinal tubule surface was accounted for 19.2%, the partial obliteration for 45.6% and the complete obliteration for 35.2%.

  4. The average number of open dentinal tubules in the control was significantly higher than in the testI and II(P<0.05), but there were no statistically significant differences between the test I and II.

  5. The average number of the partially obliterated and the completely blocked dentinal tubules in the control was significantly lower than the testI and II(P<0.05), but there were no statistically significant differences between the test I and II.

The results of this study suggest that Gluma® desensitizer and MS coat® is significantly effective on dentinal tubule obliteration, therefore they were effective on hypersensitivity caused by periodontal treatment.

Keywords: desensitizing agent, dentinal tubule, root planning

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