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. 2017 Jul-Aug;20(4):269-272.
doi: 10.4103/JCD.JCD_34_17.

Comparing the effectiveness of four desensitizing toothpastes on dentinal tubule occlusion: A scanning electron microscope analysis

Amit Jena  1 , Soumik Kala  2 , Govind Shashirekha  1
Affiliations

Comparing the effectiveness of four desensitizing toothpastes on dentinal tubule occlusion: A scanning electron microscope analysis

Amit Jena et al. J Conserv Dent. 2017 Jul-Aug.

Abstract

Introduction: Dentin hypersensitivity (DH) is a sudden short sharp pain best explained by hydrodynamic theory. Several agents are available throughout the market that can treat DH either by blocking the nerves that helps in conducting pain or by blocking the open dentinal tubules. The aim of the present study was to compare the tubule occluding efficacy of four different desensitizing dentifrices under scanning electron microscope (SEM).

Materials and methods: Sixty-two dentin blocks measuring 5 mm × 5 mm × 3 mm were obtained from extracted human molar teeth and were randomly divided into five groups: Group 1 - no treatment (control, n = 2); Group 2 - Pepsodent Pro-sensitive relief and repair (n = 15); Group 3 - Sensodyne repair and protect (n = 15); Group 4 - Remin Pro (n = 15); Group 5 - Test toothpaste containing 15% nano-hydroxyapatite (n-HA) crystals (n = 15). The specimens were brushed for 2 min/day for 14 days and stored in artificial saliva. After final brushing, specimens were gold sputtered and viewed under SEM at ×2000 magnification. Results obtained were statistically analyzed using nonparametric Kruskal-Wallis test and least significant difference post hoc test.

Results: All test groups showed significant increase in dentin tubule occlusion as compared to control group. The highest percentage of tubules occluded was shown by Group 4 and Group 5 which was significantly different from other groups (P ≤ 0.05), and there was no significant difference in tubule occlusion among them.

Conclusion: Newer desensitizing dentifrices containing 15% n-HA and Remin Pro can provide effective tubule occlusion and thereby reduce the pain and discomfort caused by DH.

Keywords: Dentine hypersensitivity; desensitizing toothpaste; nano-hydroxyapatite; scanning electron microscopy; tubule occlusion.

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Conflict of interest statement

There are no conflicts of interest.

Figures

Figure 1
Figure 1
Scanning electron microscope photomicrograph (×2000) for all groups
See this image and copyright information in PMC

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