① lick the upper jaw. The tip of the tongue is often used to lick the palate, stimulate salivary glands to secrete saliva, and has sterilization and digestion effects.

2 bite your teeth. Often pat your teeth (molars) gently, two or three times a day, about 100 times each time, which can prevent teeth from falling off.

3 wipe your lips. Close your lips and gently rub with two fingers of your right hand until the part is red and hot, which can improve the blood circulation of your mouth and gums and increase the resistance of your mouth and teeth.

4 drum cheeks. Keep your lips closed, blow air outwards, make your cheeks bulge, and gently massage your cheeks with your fingers, which can prevent the muscles of your cheeks from shrinking and collapsing, which is beneficial to the bodybuilding of your face.

Tooth loss in the elderly is a common physiological phenomenon, but in fact, a considerable number of people aged 70 to 80 still maintain neat teeth. Of course, dental care should start from adolescence, and oral care for the elderly can still play a positive role.

I hope I can help you.