What are the harms of excessive betel nut chewing to the oral cavity?

Excessive betel nut consumption poses serious risks to oral health. 1. Chemical components in betel nuts, such as arecoline and tannins, strongly irritate the oral mucosa, leading to oral mucosal lesions such as ulcers, leukoplakia, and even fibrosis. These conditions not only cause oral numbness and pain for patients but may also progress to oral cancer. 2. The coarse fiber and lime juice in betel nuts can form stains on the teeth; long-term consumption may cause tooth darkening and, in severe cases, dental calculus. Additionally, frequent chewing of betel nuts can wear down teeth, damage the enamel, and even cause tooth cracks or fractures. 3. The chewing process involved in betel nut consumption engages the jawbone and masseter muscle. Long-term use may lead to jawbone wear and masseter muscle hypertrophy, thereby affecting facial contour and aesthetics. Therefore, to protect oral health, excessive betel nut consumption should be avoided as much as possible.