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Effectiveness Of A Patient Applied 10 % Potassium Nitrate

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REVIEW OF LITERATURE
Reinhart, T. C., Killoy, W. J., Love, J., Overman, P. R., & Sakumura, J. S. (1990)
This study aimed to evaluate the effectiveness of a patient-applied 10% potassium nitrate glycerine-based gel in decreasing dentinal sensitivity on teeth with exposed dentin apical to the cementoenamel junction. The patients were divided into 3 treatment groups: group 1 was treated with a glycerine-based-10% potassium nitrate gel; group 2 was treated with a glycerine gel without potassium nitrate; and group 3 received no gel and no treatment (control). Following brushing and flossing, groups 1 and 2 applied the gel to the test teeth using custom-made soft acrylic trays, for a period of 5 min/ day for 4 weeks. Patient responses to cold water stimuli were measured at baseline (week 0), then at I-, 2-, 3- and 4-week intervals. Group 1 patients showed a significant decrease in sensitivity to cold at week 2 only. The group 2 patients showed a significant decrease in sensitivity to cold after 3 and 4 weeks. A statistically significant decrease in sensitivity was noted between group 2 and group 3 patients at week 3, the most sustained decrease in sensitivity to cold was found on teeth treated with plain glycerine.

Ide M, Wilson RF, Ashley FP. (2001)
The aim of the study was to investigate the reproducibility of commonly used measurement protocols for dentine hypersensitivity on single or multiple teeth. In addition, newly developed controlled air and cold fluid stimuli were

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