Electronic microscopic research of tooth enamel surface after usage of different methods of home bleachig

Abstract

Teeth colour plays an important role in the perception of a person, shaping his image and selfassessment. Thus, it has a significant influence on quality of life, due to its dental health. Nowadays world dental practice is increasingly focused on developing of more saving methods that provide the aesthetic needs of the patient. Aim. To study the influence of different bleaching agents on the ultrastructure of enamel by means of scanning electronic microscopy. Materials and methods. Investigation is undertaken on a 25 permanent teeth that were extracted for orthodontic indications in patients 20-30 years. For revealing of enamel surface structure changes after the action of bleaching facilities scanning electronic microscopy research method was used. Results. Electronic microscopic investigation showed that brushing with abrasive toothpaste with RDA=200 characterized by mechanical damage as a result of highly abrasive elements of toothpaste. Brushing with bleaching toothpaste RDA=120 led to less significant changes in enamel surface, indicated a less damaging effect of the paste on the surface of the enamel. Cleansing of the teeth with a paste with low abrasiveness (RDA of 75) caused minor damage to the enamel surface, indicated a slight abrasive effect of toothpaste. Bleaching with peroxide containing bleaching systems resulted in smooth enamel surface, which indicated that they to some extent dissolved the surface layer of enamel. Conclusions. Electronic microscopic studies confirmed the need of a differentiation of bleaching facilities, depending on the patient’s teeth status. This will achieve an aesthetic effect with minimum damaging effects on hard tooth tissues. To prevent complications that arise as a result of bleaching, it is necessary to prescribe local remineralization therapy with hydroxyapatite- and fluoride containing facilities of individual or professional oral hygiene.