In order to beautify teeth, protect gum health and prevent bad breath, tooth washing is the most important. Toothpaste has become a necessity of human daily life. The American Dental Association defines toothpaste as a substance used to clean the surface of teeth. The definition of China Toothpaste Industry Association is that toothpaste, together with toothbrush, cleans teeth and protects oral hygiene, which is a daily necessity to ensure human safety.
Toothpastes used in China are divided into three categories: ordinary toothpaste, fluoride toothpaste and medicinal toothpaste.
But with the development of science and technology, it is found that fluoride can prevent dental caries. After years of practice, it has been proved that fluoride is easily dissolved by acid-soluble hydroxyapatite in tooth tissue to form insoluble fluorapatite, thus improving the corrosion resistance of teeth. Studies have proved that the incidence of this toothpaste has decreased by about 40%.
Fluorides include sodium fluoride, potassium fluoride, stannous fluoride and sodium monofluorophosphate. However, we should know that fluorine is a chronic toxic substance. Fluorine does not participate in metabolism, but it will accumulate in the human body, making people prone to illness and cannot be used in large quantities. If used too much, it will lead to skeletal fluorosis. According to national regulations, the free fluorine in fluoride toothpaste should be between 500- 1500pm, especially for children before 3-4 years old, because 1/8- 1/4 toothpaste may be swallowed.
The ointment is added with some drugs on the basis of ordinary toothpaste. When brushing teeth, toothpaste reaches the surface of teeth or the environment around teeth, and reduces dental plaque through the action of drugs, thus playing a role in preventing dental caries and periodontal disease. Medicinal toothpaste is very popular with people, and it is an ideal method to promote drugs with preventive or therapeutic effects by using toothpaste.
However, medicinal toothpaste also has its disadvantages. First of all, toothpaste can't stay in the mouth for too long, that is, it is rinsed off, which makes it difficult for the medicine to play its role in a short time. Moreover, the dosage of special drugs must also avoid stimulating oral soft tissues, so it cannot increase the effective concentration enough. The function of toothpaste itself is often hindered by oral dirt or limited by morphological characteristics, so it is difficult to reach the real ward.
Secondly, drugs in toothpaste often undergo other chemical changes and lose their original efficacy because of long-term storage. Effective drugs are often not suitable for toothpaste, because it has an odor. In addition, there is the problem of drug resistance. These factors indicate that toothpaste is not suitable for long-term use. Toothpaste is a good idea, but it needs some in-depth research to really prevent oral diseases.
In the face of a variety of toothpastes, we must first understand the performance of various toothpastes, and don't blindly believe in product descriptions. It is best to consult a professional dentist and choose the appropriate toothpaste according to the actual situation of your mouth. For the use of toothpaste, it is best to change it once every three months. The alternate use of several toothpastes has some advantages, which can not only prevent the bacteria in the mouth from producing drug resistance to some drug components and affect the prevention and treatment effect, but also prevent some drugs from being consumed too much after long-term repeated use. Therefore, it is a wise choice to use several toothpastes alternately.