Modern dentistry is associated not only with medical procedures for ensuring full dental health but also with the restoration and improvement of facial aesthetics. Tooth bleaching is one of the most frequently requested and executed aesthetic procedures in many dental practices. It is the simplest, cheapest, and most non-invasive treatment for removing stains and lightening the color of both vital and devitalized teeth. Teeth bleaching can be very successful when executed on certain types of carefully selected patients with the appropriate bleaching products according to the bleaching protocols. Patients' smiles, appearances, and quality of life improve after undergoing tooth bleaching.
Some authors claim that only minor changes in the ultrastructure of the tooth enamel surface may occur as a result of a tooth bleaching procedure, while others believe such changes are significant. These changes depend on the concentration of hydrogen peroxide in the bleaching product, on the duration of the procedures, as well as on the presence or absence of a bleaching process activator and its type and intensity. In view of possible adverse effects and possible complications after bleaching procedures, their clinical application must be very precise, taking into consideration all necessary precautions.
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