Many people think that “toothache is not a disease” and often wait until “it hurts like hell” before going to the doctor. This concept is wrong. Toothache is not only a disease, but also should be treated early. There are two major clinical dental diseases, namely tooth decay and periodontal disease. Dental caries, commonly known as tooth decay and worm tooth, is a disease caused by chronic progressive destruction of hard tissues of teeth due to poor oral hygiene, bacteria in the mouth, diet containing much sugar and poor tooth structure. Generally, the progress is slow, and the initial performance is only dark brown spots or defects on the tooth surface, there is no toothache and other conscious symptoms, the treatment process is simple, painless, and can be completed once, and the dental nerve is preserved. However, there are many caries patients miss this best treatment time. If the cavity is allowed to develop, the toothache can appear when the cavity is deep and hot or cold. If not treated in time, the cavity will become bigger and bigger, and the serious one will have pulp infection, which is called “nerve exposure”, and develop into pulpitis, and some serious patients will have more pain at night, and have the feeling of “it hurts like hell”, so they can’t sleep and eat. If you wait until the toothache is so bad that you consult a doctor, the treatment process will be complicated and the pain will increase, and you will need to extract the nerve for root canal treatment, which usually requires more than 4 times of consultation. Of course, it costs more than the simple one-time caries treatment. If the condition is not controlled at this time, it will develop into apical tooth infection and apical abscess, and it may also cause interstitial infection, then the treatment is more complicated and painful, and it may require incision and drainage and systemic anti-inflammatory support treatment. If the tooth is severely damaged and a residual root or crown remains, it can also easily become a focal point for bacterial infection. Focal tooth can induce or cause many kinds of diseases, including neurological diseases (headache, vertigo, brain abscess, etc.), cardiovascular diseases (rheumatic heart disease, infective endocarditis, etc.), eye diseases (iritis, etc.), gastrointestinal diseases (chronic gastritis, ulcer disease, etc.), kidney diseases, skin diseases and many other systemic diseases, and even affect pregnant women and fetuses. Therefore, caries should be diagnosed and treated as early as possible. The smaller the cavity of tooth caries, the better the treatment effect, and also save time and cost. Many people think that it doesn’t matter whether to treat the caries of baby teeth or not, because the baby teeth will be replaced sooner or later, and they will only bring the baby to the hospital when the toothache is unbearable. In fact, a healthy set of milk teeth is crucial to a child’s life. The development of children’s tooth decay can cause pain and affect the oral function such as chewing; it can lead to the early loss of children’s milk teeth and bring adverse effects to the eruption of permanent teeth, such as teeth misalignment; affect the chewing function of children, easily cause the imbalance of children’s nutritional intake, affect the development of jaw and face and the whole body, the resistance of the organism is also reduced, and the chronic periapical inflammation turned into caries as the focal tooth can also cause other tissues of the organism to occur The chronic periapical infection from caries can also cause other tissues of the body to develop focal infection such as arthritis and nephritis. In addition, it is reported that children’s caries can also affect the intellectual development of children. It can be seen that the caries of milk teeth has a great influence on the oral function and physical health development of children, which should not be ignored, and the caries of children should be treated early. Periodontal disease is one of the most common oral diseases and the most important cause of tooth loss in adults. Periodontal disease is the damage to periodontal tissues (gum, periodontal membrane, alveolar bone) caused by bacterial infection under the influence of poor oral hygiene, food embedment, soft tartar, tartar, systemic nutrition and metabolism, endocrine disorders and other factors, resulting in gum inflammation and bleeding, periodontal pocket formation, alveolar bone resorption, tooth loosening and displacement and other symptoms. Without timely and effective treatment, the number of teeth lost is not a single tooth but a majority of teeth, and even the whole mouth is involved. According to statistics, the prevalence of periodontal disease (including gingivitis and periodontitis) is as high as over 90% in China. However, from the current situation, most citizens in our province will only choose to seek medical attention when their gums are swollen and painful. At this time, the patient’s periodontal disease is already very serious, and some loose teeth can no longer be cured and can only be extracted. In fact, periodontal disease in the early stage is not without aura, just did not attract the attention of patients, missed the best time to prevent and control. Generally speaking, as long as there are symptoms such as bleeding gums, bad breath and loose teeth, you should promptly go to the hospital for examination and treatment to prevent the aggravation of periodontal disease. Tooth loss not only affects digestion and absorption, but also reduces brain cell vitality, leading to memory loss and an increased incidence of Alzheimer’s disease. Periodontal disease can also become a chronic foci of infection causing many systemic diseases, among which causing acute or subacute infective endocarditis is the most obvious. Bacteria producing periodontal inflammation will produce pathogenic and toxic under the temperature and humidity conditions of the oral cavity, and continuously enter the blood circulation system, which is highly susceptible to heart disease over time, and 10% to 30% of myocarditis is related to odontogenic infection. Caries and periodontal disease are the two most common oral diseases of human beings, and untimely treatment will cause systemic disease, which will certainly reduce life and survival quality. If we can prevent and treat dental caries and periodontal disease in time, we can avoid many oral diseases, and the systemic complications will not happen. It can be seen that oral health is related to the whole body health. To sum up, no matter from any aspect, dental disease should be treated early. We should not underestimate dental disease. Small dental diseases can cause big trouble if left untreated. If you are suffering from dental disease, you should consult a doctor and have regular checkups, and those who are not suffering from dental disease should also go to the hospital for checkups once every six months. Raising the awareness and understanding of oral hygiene, treating diseases early and preventing diseases early is a positive and effective way to improve the life of teeth. Having healthy teeth is the only way to ensure that we get good nutrition, have a good body and enjoy a good life. If you develop good oral hygiene habits from childhood, pay attention to oral hygiene continuously throughout your life and go to a specialist hospital for regular checkups, then healthy teeth will accompany you for a lifetime. Modern life needs healthy teeth and a bright smile, may healthy teeth accompany you for life.