Saliva helps protect teeth and gums from bacteria that cause cavities and gingivitis. So a perpetually dry mouth is more susceptible to tooth decay and gum disease.
唾液可以保护牙齿免受引发牙齿腔洞和牙龈炎的细菌感染，所以长期干燥的口腔更易患这两种疾病。
She told me my mouth was numb and I wouldn't be able to feel anything for a while and that the bandage was there to protect the gums, but that I would need to see a specialist.
她说我的牙齿因麻醉短时间会没感觉，过一会就没事了，还有绷带是用来保护牙床，之后还要让我去看看专家医师。
She told me my mouth was numb and I wouldn't be able to feel anything for a while and that the bandage was there to protect the gums, but that I would need to see a specialist.
她说我的牙齿因麻醉短时间会没感觉，过一会就没事了，还有绷带是用来保护牙床，之后还要让我去看看专家医师。
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