Plaque is a soft mass formed from food debris. In the mouth, it mainly accumulates along the edges of the gums at the necks of the teeth, between the teeth and in the grooves (fissures) of the teeth on the chewing surface - places that are hard to reach with a toothbrush. Certain foods, such as sweets and pastries, black tea and coffee, increase the formation of plaque. Smoking also has a very negative effect on dental health - under the influence of nicotine, more plaque is formed, and the teeth become yellowish-brown (coffee has a similar effect has). As plaque builds up over time, it hardens, resulting in tartar formation. Daily dental care, such as brushing and flossing, is obligatory, but home brushing and flossing cannot completely eliminate bacterial plaque and tartar. Consequently, the risk of inflammation and infection of those oral cavity parts to which access is limited (between the teeth, in the grooves of the teeth) is increased. Therefore, in order to avoid the above listed problems, patients who do not have daily complaints about dental health, should not only regularly take care of oral hygiene at home, but also visit a hygienist at least once a year.