When we are stressed or fire, our mouth is prone to ulcers, but after a few days of adjustment, without medication mouth ulcers can heal themselves. However, some people’s mouth ulcers are difficult to heal for a long time, what is going on? Is it because the fire is too heavy? What is the relationship between canker sores and mouth cancer? When our body is too hot, there will be ulcers, small hard nodules or rotten mucous membrane in a certain part of the mouth, which may cause pain and discomfort from time to time, but it can be cured by itself in a short period of time or by taking medicine to clear the fire. However, if the ulcer, decay fixed in the bottom of the mouth part, namely produced in the tongue below and the lower collar bone body gum between the semilunar area, and the base is hard, sometimes painful, taking medicine is not possible to cure, it is not possible to take for granted that it is “on fire”, because the real “first evil “It is very likely that the real culprit is cancer of the floor of the mouth. When you find such symptoms, you should go to the stomatology department of hospital for clinical diagnosis and examination as soon as possible to avoid misdiagnosis rate due to “not knowing the true face of Lushan”. Floor of mouth cancer is most popular among middle-aged and elderly people above 40 years old, which is more widespread in western countries but less common in China, but there is a trend of increase in recent years. The invasion site of floor of mouth cancer is relatively hidden, and the initial clinical diagnosis is small hard nodules or superficial red spots, which are not painful or itchy and do not stain the food, so they are mostly not noticed. When the tumor reaches several centimeters in size, the center of the tumor dies and breaks down, resembling a crater, and a deep fissure-shaped ulcer emerges at the bottom of the mouth. In the late stage or when swallowing contamination, it can produce pain, drooling, hard to eat, etc. It can be accompanied by enlarged lymph nodes. The first three factors to be avoided in the prevention of cancer of the floor of the mouth Trigger 1: long-term addiction to smoking and alcohol Oral cancer patients mostly have a long-term history of smoking and drinking, while non-smokers and non-drinkers oral cancer is rare. In 1982, Trivandrum Cancer Center in India treated 234 cases of buccal mucosa cancer, 98% of which had a history of chewing tobacco leaves and tobacco lumps. Keller data in the United States showed that the incidence of oral cancer in smokers who do not drink alcohol or alcohol is 2.43 times and 2.33 times higher than that in non-smokers and non-drinkers, respectively, while the incidence in smokers and alcoholics is 15.5 times higher than that in non-smokers and non-drinkers. In addition, chewing betel nut and other mixtures can cause the increase of oral mucosa epithelial basal cell division activity, which will also increase the incidence of oral cancer. Causes II: Poor oral hygiene Poor oral hygiene habits create conditions for bacteria or mold to breed and multiply in the oral cavity, thus facilitating the formation of nitrosamines and their precursors. Coupled with stomatitis, some cells are in proliferative state and more sensitive to carcinogens, so all these reasons may promote the occurrence of oral cancer. Trigger 3: Long-term stimulation of foreign body Dental roots or sharp tooth tips or unsuitable dentures stimulate oral mucosa for a long time, resulting in chronic ulcers and even the formation of fundic cancer. Early prevention and treatment of fundic cancer is the most important thing. Fundic cancer is not an incurable disease, but the key lies in early detection, early clinical diagnosis and early treatment. For this reason, middle-aged and elderly people must perform oral clinical diagnostic examination once every 1-2 years. If the white spots of the mouth are found to be granular or pang-like rise, or produce rotten ulcers, they should progress in vigilance and go to the hospital for diagnosis and treatment in time. In addition, excluding slow-onset irritation, removing stump roots, removing bad restorations, maintaining oral hygiene, keeping the good habit of brushing teeth in the morning and evening and rinsing mouth after meals are all wise actions to prevent patients from caring for cancer of the floor of the mouth.