Please activate JavaScript!
Please install Adobe Flash Player, click here for download
ePaper created 2017-06-02, 10:40:19 | version 1.38.0
O z o n e t r e a t m e n t f o r d e n t i n a l h y p e r s e n s i t i v i t y Fig. 1 Ozone application at tooth #13 (affected by a vestibular recession of 3 mm). Fig. 1 was used. It contains ethanol, water, hydroxy- propyl cellulose, potassium fluoride, polyeth- ylene glycol dimethacrylate and other methac- rylates. Treatment with VivaSens was performed in a single session, according to the following protocol: 1. evaluation and registration of the NRS (0–10) with a jet of compressed air; 2. cleansing of the affected element using a dental water brush mounted on a micromotor, without using an abrasive paste; 3. drying of the element with compressed air; 4. application of three drops of VivaSens using a microbrush over the entire surface of the element for 1 min; 5. drying of the element with compressed air for 30 s; 6. evaluation and registration of the NRS (0–10) with a jet of compressed air. Once the desensitizing agent had been applied, each patient was recommended not to rinse, drink or eat for the following 30 min, as indicat- ed by the manufacturer. The patients were re- assessed, recording NRS score, after 14 days (FU1) and monthly for six months (FU2, FU3, FU4, FU5, FU6, FU7) after the last paint appli- cation. Statistical analysis Statistical analysis was performed using SPSS for Windows (Version 16.0; SPSS, Chicago, Ill., U.S.). A p-value of less than 0.05 was considered the cut-off of significance in the contrast of the null hypothesis. The t-test for equality of the median was used to assess the equality of the age distribution and the chi-squared test to eval- uate the homogeneity of sexes in both groups. The Mann–Whitney test was used to evaluate the significance of differences between groups in NRS values at baseline (T0) and in the course of the follow-up. The Fisher two-tailed exact test was used to evaluate the homogeneity of distribution between groups regarding the fol- lowing parameters: presence of recession; pres- ence of plaque; presence of abrasion; presence of periodontal pocket depths of > 3.5 mm; pain in response to cold, hot, mechanical or osmotic stimuli; pain evoked by forced inhalation through gritted teeth; using an electric toothbrush; pre- vious dental whitening; previous periodontal surgery; and frequent intake of acidic foods or beverages. The Friedman test was used to eval- uate the variation of VAS (Visual Analog Scale) within the paint group and ozone group, respec- tively. The Wilcoxon test was used to assess the differences in VAS values between times within the two groups and between T0 and T1, between T0 and FU6, and between T0 and FU7 in the paint group and between T0 and T4, between T0 and FU6, and between T0 and FU7 in the ozone group, respectively. Bonferroni’s correc- tions were applied, where necessary, in multiple comparisons. Results The 40 patients, 34 females and 6 males, re- spectively, were distributed in two groups with 20 Volume 3 | Issue 2/2017 Journal of Oral Science & Rehabilitation