The benefits of eating gum can play a certain role in cleaning, stimulate the secretion of saliva, moderate amount of chewing gum is generally no harm, but long-term chewing gum may lead to chewing muscle enlargement, damage to oral health. 1.Benefits (1) Cleaning effect: because the gum itself has a strong viscosity, this viscosity can stick away from the teeth on the occlusal surface of the food debris, to achieve a certain effect of cleaning the oral cavity. (2) Stimulate the secretion of saliva: some ingredients in chewing gum can prompt the salivary glands to secrete saliva, when there is enough saliva in the mouth, it can effectively protect the teeth. (3) Relieve ear discomfort: when flying, the plane rises due to the external pressure becomes smaller, and the pressure inside the ear will be higher discomfort, chewing gum can promote the movement of the jaw, and make the eustachian tube open, play a balance between the internal and external pressure, to relieve the discomfort of the role. 2. Disadvantages (1) Chewing muscle enlargement: If you eat gum for a long time, when chewing, it will lead to excessive activation and activity of facial muscles, which will lead to the enlargement of chewing muscle over time. (2) Damage to oral health: chewing gum contains a lot of sugar, if you eat gum for a long time, it is easy to lead to dental caries. It is recommended to eat chewing gum in moderation and avoid chewing for a long time to avoid adverse effects.