and you reach haj dandani and the statistics of the ministry of health in iran, between 30 and 60% of adults have severe sensitivity to tooth enamel, so they must use a special toothpaste . this product is proxy apatite, which is designed on a nano scale and is used due to a series of possible factors that hydroxyapatite from the enamel surface and tooth dentin will be destroyed and tooth decay will occur , so it is better to replace apatite with an external agent . dentin of artificial teeth, the composition of which cannot be seen with the eyes filling microscopic channels helps reduce tooth sensitivity up to 56% , prevents tooth decay, fruits that are just getting destroyed due to orthodontic brackets , prevents tooth enamel composition for teeth that are not sensitive. for them, the most important thing that actually causes dental problems are bacterial biofilms that accumulate on the teeth and these plaques aggravate the subsequent problems of caries and dental conditions. the formulation that has been confirmed by clinical tests, we have done the necessary research for almost a