回答: 有关牙齿RECESSION 的问题 由 client 于 2006-02-17 11:20:47 Four major reasons:
1. Clenching or grinding. Try nightguard first if the case, or you may need to see a TMD specialist (a dentist with focus on temporomandibular disease).
2. Horizontal brushing. Try to use soft bristles in a vertical or circular motion.
3. Gingivitis/Periodontitis. Take good care of the oral hygiene to control the gum inflammation.
4. Systemic diseases, eg. osteoporosis, diabetes, etc may also be a factor, since the gum follows whereever the bone goes. Consult with your physician then.
Hope this help. Good luck ;-) | 
