Here he has outlined four causes of the problem - and four things you can do about it. Tooth Decay “Cavities are the result ...

Tooth decay is the destruction of tooth structure ... by bacteria in your mouth that gives off noxious odors or gases that smell like sulfur. Bad breath, medically called halitosis, can result ...

Yeung Hiu-ching, 16, Pui Kiu College: I recommend incorporating a feature that specifically blocks smell and taste for ... a cavity can cause the affected tooth to fall out and may even spread ...

Tooth-pulling scene in 1600s. Wellcome Library, London. Some of the earliest examples of tooth decay are the tooth erosion found in ancient Egyptian skulls, believed to have been due to eating ...