Eating chewing gum is good for teeth, such as cleaning the mouth, exercise chewing function, promote digestion and so on. However, chewing gum should not be too frequent, so as not to cause fatigue of the biting muscle or even lead to temporomandibular joint disease. 1. Clean up the oral cavity: chewing gum in the chewing process, you can clean up the surface of the teeth of food debris, is not conducive to the propagation of bacteria; can promote the secretion of saliva, saliva contains lysozyme, which can kill bacteria in the mouth, is conducive to oral hygiene and health. 2. Exercise chewing function: chewing gum needs to be chewed, in the constant chewing, the biting muscle contraction, can make the biting muscle become developed, which can improve the chewing function. 3. Promote digestion: when people chew gum, the gum in the mouth can form a stimulus to the stomach, promote the secretion of gastric acid in the stomach cells, so as to promote human digestion. But if you eat gum too often, chewing gum every day can lead to fatigue of the biting muscle, and even induce temporomandibular relationship disorder. Eating gum also need to pay attention to, if accidentally choked into the trachea, causing severe coughing, and even breathing difficulties and other symptoms, you should promptly seek medical attention, so as not to delay the condition.