But there are two much more serious problems, common dental diseases that can lead not only to loss of teeth but also to loss of life: periodontal disease and oral cancer.

不过，还有两个更为严重的健康问题，普通的牙病不只让人失去牙齿，还会失去性命：它们可能引发牙周病和口腔癌。

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Bad brushing leads to loss of teeth.

不好好刷牙，就会导致牙齿坏掉。

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Periodontitis is an advanced form of gum disease resulting in inflammation within the supporting tissues of the teeth, "attachment loss" and a breakdown of the bone that supports your teeth.

牙周炎是牙龈的炎症导致牙齿内部的支持组织的疾病的高级形式，“附着丧失”和骨骼，支持你的牙齿破裂。

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Other concerns include an increased risk of ear infection, hearing loss and problems with their teeth.

VOA: special.2009.12.22

And that can result in the loss of teeth.

NPR: Study Links Pot Smoking to Gum Disease

That means its dentists often treat bone loss and gum disease and install a lot of false teeth.

FORBES: Magazine Article