积极呵护牙龈和牙齿，愿大家一直拥有健康的笑容！
编辑：张欣
排版：吴泽仪
图源：网络
参考资料
1.孟焕新.牙周病学（第5版）[M].北京：人民卫生出版社
2.Receding Gums https://www.webmd.com/oral-health/guide/receding_gums_causes-treatments
3.Jati, Ana Suzy et al. “Gingival recession: its causes and types, and the importance of orthodontic treatment.” Dental press journal of orthodontics vol. 21,3 (2016): 18-29. doi:10.1590/2177-6709.21.3.018-029.oin
4.Teeth and Gum Care https://www.webmd.com/oral-health/guide/teeth-gum-care
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