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  • Title: [Comparison of the occlusion effect of three kinds of desensitizers on dentinal tubules].
    Author: Chen L, Xu F, Guan Z, Zhang W, Wang X.
    Journal: Zhong Nan Da Xue Xue Bao Yi Xue Ban; 2014 Sep; 39(9):959-63. PubMed ID: 25269509.
    Abstract:
    OBJECTIVE: To explore the effects of three dentine desensitizers on the surface morphology of freshly exposed dentin and to evaluate their occlusion effects on dentinal tubules using scanning electron microscope (SEM). METHODS: A total of 16 isolated human premolar samples, which were prepared to expose dentine, were randomly divided into a control group (n=4), a Hybrid Coat group (n=4), a Prime & Bond NT group (n=4), and a anti-sensitivity toothpaste group (n=4). After treatment with dentine desensitizers, one half of the samples in each group were vertically cleaved. Finally, the surfaces and cross sections of the samples were observed by SEM. RESULTS: The exposed tubule was almost occluded in the Hybrid Coat group and the Prime & Bond NT group, while only the majority of tubules could be sealed in the anti-sensitivity toothpaste group. The cross-section images showed that sediments were visible in all groups except the control group. CONCLUSION: Hybrid Coat and Prime & Bond NT are able to effectively seal tubules, while the effect of anti-sensitivity toothpaste is slightly poor.
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