What we're talking about here is really bad oral hygiene.

我们说的可真是很糟糕的口腔卫生。

A total of 24 volunteers who took part in the study were given strict instructions on oral hygiene, diet and medication intake.

共有24名志愿者参与了这项研究，研究者们在口腔卫生、饮食和药物服用等方面对他们提出了严格的要求。

I'll make up my own rules of oral hygiene.

干脆再自编个口腔卫生规矩好了。

Even the sugars in honey and fruit juices can cause tooth decay if good oral hygiene isn't followed and you consume a lot of these foods.

如果不注意口腔卫生，食用大量的蜂蜜和果汁，其中的糖分都能腐蚀牙齿。

A few controversial studies have also claimed to have found links between bad oral hygiene and things like dementia and erectile dysfunction!

一些有争议的研究还声称发现了不良的口腔卫生与痴呆症和勃起功能障碍等疾病之间的联系！

Poor oral hygiene can increase colonisation with pathogens such as S. aureus or P. aeruginosa that can be aspirated into the lower airway, thus increasing the risk of pneumonia.

不良的口腔卫生会增加致病菌的定植，如金黄色葡萄球菌、铜绿假单胞菌等；这些致病菌会被吸入下呼吸道，从而增加罹患肺炎的风险。

The best way to avoid a cavity is still cutting down on sugar intake and practicing good oral hygiene to get rid of the bacteria and their food sources.

防止它继续恶化避免蛀牙的最佳办法 仍然是减少糖分的摄取并保持良好的口腔卫生。

Smokers tend to have yellow teeth and develop gum diseases, persistent bad breath and other oral hygiene problems. Above all it kills five million people every year and makes many more fall ill.

出现牙齿变黄等牙龈疾病、持续性的口臭和其他口腔卫生问题。最重要的是，每年死亡人数达到500万，患病率也高居不下。