ASSESSMENT OF DENTAL HARD TISSUE AFTER PEROXIDE WHITENING

Abstract

The aim of the present study was to assess the condition of hard tooth tissues after their whitening. Research materials and methods. The study agreed to take part 44 people aged 19 to 27 years ‒ 37 women and 7 men who, when surveyed, confirmed that they had previously performed teeth whitening. Tooth whitening was performed using peroxides. The following tasks were set: 1. To determine the prevalence of dental hyperesthesia that developed after chemical whitening in individuals who underwent whitening in the range of 6-7 months ago. 2. Study the mineralizing potential of oral fluid and the degree of development of dental demineralization. results. The first stage of research concerned the assessment of the dental status of patients before teeth whitening. Analysis of the results indicated a high prevalence of hard tissue damage in the examined patients, of which 91% were of carious origin and 18.2 % were of non-carious origin. And this was a risk for the deterioration of the situation regarding the increase in the permeability of enamel, and, as a result, the development of hypersensitivity of teeth after their whitening. Enamel resistance results were consistent with moderate acid resistance When assessing the mineralizing potential of oral fluid by type of salivary crystallization, it was found that the smallest number of people (21 %) had the most favorable type 1.And type 3, the most unfavorable, in which there is a complete absence of crystals in the field of view, was detected in most patients. After assessing the dental status of patients, studies were conducted that examined the effect of tooth whitening on their condition in the subsequent period. To assess the condition of enamel in persons with dental hyperesthesia, special clinical tests were used, namely a resistance test, and the mineralizing potential of oral fluid was also determined.With the help of the latter, it is possible to indirectly assess whether the oral fluid contains enough basic minerals to carry out the mineralization and remineralization process. The results of the evaluation of enamel resistance showed that the average indicator corresponded to moderate acid resistance of enamel. Moreover, most of all there were people with high and moderate resistance (14 people); low and very low resistance was detected in 10 people. This indicated that, although studies were not conducted immediately after bleaching, enamel resistance was reduced.