Introduction
tooth enamel Tooth, hypersensitivity Fluoride, tooth enamel, tooth
DEMINERALIZATION
In recent years, the search for a healthy smile that combines the maintenance of oral
hygiene and the esthetic appearance has grown, especially regarding tooth color.
Therefore, the use of toothpastes becomes essential not only to prevent biofilm
accumulation and polish tooth surfaces but also to remove extrinsic stains caused by
pigmentation of the acquired pellicle The demand for increasingly whiter teeth has determined the inclusion of
over-the-counter whitening agents Abrasives and/or chemical agents (such as hydrogen or carbamide peroxides) have been
introduced in their composition to promote this effect. However, Unfortunately, the use of whitening products can cause morphological changes that
compromise the superficial integrity of tooth enamel Tooth appearance also depends on the gloss of the enamel, which is directly related
to the morphology of its surface. There is an inverse linear correlation between the
surface roughness and the gloss Another group of over-the-counter toothpastes are those that provide therapeutic
action in relieving dental hypersensitivity Fluoride can also inhibit dental demineralization. Fluoride ions replace hydroxyl
groups in enamel hydroxyapatite, resulting in the formation of fluorapatite, which
is more resistant to acid attack. Changes in the composition of enamel crystals
through remineralization can alter the physical and chemical properties of the
enamel. The formation of fluoridated apatite results in higher refractive index than
the original carbonated apatite, which consequently would alter the light reflection
and perception of color Regardless of the promising results of these toothpastes regarding their main
mechanism of action, data of crossover clinical trials evaluating their effect on
the physical and mechanical properties of tooth enamel are limited to support their
indication. The aim of this 