1. As calcareous and betel nut juice fill the mouth, dental calculus is formed. Bite again because of long-term hard chewing? It consumes dentin and even cracks or breaks teeth.

2. Effect on temporomandibular joint:? Occlusal changes and temporomandibular joint pain and disease are caused by dentin bite and temporomandibular joint surface wear. Change, so that when the mouth is closed, there will be sound and joint pain, which is not only painful. And the treatment is quite difficult.

3. Effect on periodontal tissue:? Because the betel nut fiber is quite thick and hard, it will stab the gums or block the teeth. Causing pressure on the interdental papilla? And inflammation, also because of chewing hard, causes damage to periodontal ligament. Causes inflammation, edema and pain around the root. ? On the other hand, due to the accumulation of calcareous and betel nut residues, the stones become thicker and thicker. Causes gum damage, redness, suppuration, root exposure, etc., resulting in periodontal disease. Finally to the tooth one? Particles fall off or have to be pulled out.

4. Effect on oral mucosa:? Oral submucosal fibrosis and leukoplakia caused by chewing betel nut. That is, the prophase lesion of oral cancer, and its clinical symptoms are difficulty in opening mouth, pain, numbness and numbness. Oral mucosa whitening and ulcer.

5. Effect on digestive system:? Betel nut juice scale pollutes the teeth and cheeks of black lips, affects the appearance, and damages the taste nerve and saliva secretion. Obstructing digestive function, areca nut residue stimulates gastric wall, leading to inflammation and even perforation of gastric mucosa. Affect nutrient absorption, resulting in malnutrition.